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Online Slots UK | Best Slot Sites December 2023

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Last Updated: 8 Dec 2023

The best slot sites as reviewed and ranked by our online slots UK experts – check out our exclusive slots UK offers and bonuses below.

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At Gambling.com, we want to ensure that players are matched with the right casino and sportsbook offers for them. For this reason, some of the recommended site links are affiliate links.


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  1. Our Top Pick

    1


    Pub Casino

    Established 2023

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    Sleek & Original Pub Theme

    Dual Casino & Sportsbook Platform

    Tournament Leaderboards & Prizes

    Pub Casino won’t offer you a pint but there is no closing time at this establishment, with customer support at hand 24/7. We also like their straight forward welcome bonus of 100% up to £100.

  2. 2


    Mr Vegas Casino

    Established 2019

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    Extensive Library of Slots & Jackpot Slot Games

    Weekly ‘Rainbow Friday’ Cashback

    Earn Spins on ‘The Wheel of Vegas’

    Mr Vegas Casino stands out with its vast games inventory, including thousands of slots titles. It also offers a ‘Rainbow Treasure’ reward program – the more you stake during the week, the more cash-back you get the following Friday (up to £300 per day).

  3. 3


    PartyCasino

    Established 1997

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    Awarded ‘Casino of the Year’ 2017 & 2018

    Win Prizes in Daily Online Slots Tournaments

    Official Partner of F1 McLaren Racing Team

    Part of the multinational gaming group Entain, Party Casino offers a huge range of progressive jackpots and exclusive online slots tournaments, with 24/7 support.

  4. 4


    All British Casino

    Established 2012

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    Daily 10% Cashback of Losses for UK Customers

    ‘Marvellous Midweek’ – Weekly Promotions

    Regular Casino Tournaments & Challenges

    All British Casino is an unashamedly red, white and blue online casino experience, including its Royal Air Force target logo along with other iconic British imagery.

  5. 5


    BetMGM UK Casino

    Established 2023

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    UK Casino Site of MGM Resorts International

    Exclusive ‘MGM Millions’ Jackpot Games

    Celebrity UK Brand Ambassador Chris Rock

    BetMGM is the new UK online casino of one of the most recognisable casino resort brands in the world, which includes famous casinos such as The Bellagio, ARIA, The Cosmopolitan of Las Vegas and MGM Grand.

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    Fun Casino

    Established 2019

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    Unlimited 10% Cashback Scheme

    Monthly Live Casino & Slots Tournaments

    Weekly ‘Fun Friday’ Promotions

    Fun Casino have introduced a permanent and unlimited cashback scheme where they will refund you 10% of lost deposits, with no wagering requirements or other bonus terms.

  7. 7


    MagicRed Casino

    Established 2014

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    Wide Selection of Live Casino Games

    Regular Free Spins & Slots Tournaments

    Quick & Simple 2-Step Sign-Up Process

    Magic Red Casino offers the standard mix of traditional casino games and slots, but it’s their Live Casino that really shines through for us, with many different live dealer blackjack, baccarat and roulette variations, plus Texas Hold ‘Em and Three Card Poker.

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    Winomania Casino

    Established 2019

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    Earn Bonus Spins Daily

    Weekly Cashback Bonus

    6-Tier VIP Level

    Winomania Casino is operated by Anakatech Interactive Limited and gives UK players a smooth gaming experience. Players can get free spins by making a first deposit and by depositing daily too.

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    MrQ Casino

    Established 2018

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    ‘Slots Operator of the Year’ 2021

    Sponsors of ITV’s Celebrity Juice Show

    All Promotions 100% Wagering Free

    MrQ Casino will be familiar to many from their ‘No Nonsense’ advertising campaigns and they now sponsor ITV2’s comedy panel game Celebrity Juice.

  10. 10


    Betway Casino

    Established 2006

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    Unique Flexi Bonuses – Cash Out Any Time

    Global Casino Ambassador Nargis Fakhri

    Play New ‘Vinnie Jones Roulette’

    Betway has long been considered a first-class UK casino and sportsbook. In 2012, a British Army soldier won a record £13.2 million on the Mega Moolah slot at Betway Casino – just 25 minutes after signing up.

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    Grosvenor Casino

    Established 2007

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    Part of the Prestigious Rank Group

    Membership Scheme Benefits & Promotions

    Victoria Roulette – Live from London

    Grosvenor Casinos is the UK’s largest casino brand with over 50 land-based casinos located across England, Scotland & Wales – and you can play exclusive ‘Victoria Roulette’ online from tables streamed live from the famous Victoria Casino in London 24/7.

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    Spin and Win

    Established 2011

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    Part of the Prestigious Rank Group

    Spin & Win Loyalty Points

    Regular Seasonal Promotions & Bonuses

    Spin & Win Casino has a minimalistic and clean games lobby with an extensive range of slots games (including Megaways), plus traditional table games and a Live Casino.

  13. 13


    Red Casino

    Established 2023

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    Regular Free Spin Frenzy

    Monthly Prizes

    Points Exchanged for Bonus Money

    Red Casino is powered by Jupiter Gaming and offers players daily free spins when completing spin frenzy challenges. Players can choose from a vast number of Live Casino Games.

  14. 14


    Winlandia Casino

    Established 2014

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    Newest Casino in the UK

    Exclusive welcome bonus

    Exclusive slots and game releases

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    Jackpot City Casino

    Established 1998

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    Kwiff Casino

    Established 2015

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    Innovative Mobile First Casino & Sportsbook

    Multi-Game Casino Tournaments

    Supercharged Roulette (x2 or x5 Payouts)

    Kwiff started life as an ‘industry disruptive’ sports betting app, but has now expanded into casino and boasts a wide range of slots, scratchcards, table games and kwiff themed live roulette & blackjack tables.

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    Red Axe Play Casino

    Established 2021

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    Duelz Casino

    Established 2018

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    Unique Gamified Online Casino Experience

    Daily Duelz Cash Tournaments

    10% Cashback Every Friday

    Duelz Casino offers an original game-play twist to online casino – you can challenge other players to a duel and earn stars and trophies to unlock chests containing cash prizes or valuable spells to help win future duels.

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    Leo Vegas Casino

    Established 2012

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    ‘Online Casino of the Year’ 2018-2023

    ‘Mobile Operator of the Year’ 2023

    Exclusive ‘LeoJackpot’ Online Slot Games

    Leo Vegas Online Casino has won multiple industry awards for casino sites, including ‘Online Casino of the Year’ at the Global Gaming Awards six years in a row.

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    Star Wins Casino

    Established 2020

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    Online Casino of the Daily Star Newspaper

    Unlock Trophies with Entertaining Tasks

    Each New Level Unlocks a Mega Reel Spin

    Star Wins is the online casino site of the Daily Star newspaper and offers players regular promotions, including Amazon and Just Eat voucher giveaways, along with free spin promos.

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    Peachy Games Casino

    Established 2019

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    Weekly Slots Tournaments & Daily Prize Drops

    Collect Peachy Points to Claim Free Spins

    Live Chat Support (9am until midnight)

    Peachy Games is a slots first online casino with a broad range of Jackpot slot games, plus scratch cards, bingo games and a live casino to offer players a ‘sweet time’.

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    PriveWin Casino

    Established 2017

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    Rainbow Riches Casino

    Established 2019

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    Popular Rainbow Riches Slot Game Series

    Regular Free Spins Promotions

    Stylish & Uncomplicated Games Lobby

    Rainbow Riches Casino is named after the popular Irish themed Rainbow Riches slot game from Barcrest. But you’ll also find many other online casino games, plus live casino and bingo.

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    666 Casino

    Established 2017

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    Fiery Devil Themed UK Casino

    Regular Casino Tournament Prizepools

    Over 100 Live Dealer Tables

    666 Casino offers to ‘relight your fire’ with their devilish casino site, one of many themed casinos on the Aspire Global International platform which has over 100 live dealer blackjack and roulette tables.

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    BetItOn Casino

    Established 2020

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    ‘Rising Star Operator of the Year’ 2021

    Seven-Tier Betiton Loyalty Program

    Brand Ambassador Djibril Cissé

    At Betiton Casino you earn reward points as you play that can be converted into bonuses as you climb their ‘loyalty ladder’. They boast ex-Liverpool striker and Champions League winner Djibril Cissé as their brand ambassador.

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    Jackpotjoy Casino

    Established 2002

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    Awarded ‘Operator of the Year’ 2020

    Brand Ambassador Paddy McGuinness

    ‘Joy Points’ Reward Scheme

    Jackpotjoy is part of the Gamesys Group which has various gaming brands including Virgin Games and Rainbow Riches Casino. The Jackpotjoy TV ads featuring comedian Paddy McGuinness will be familiar to many.

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    Double Bubble Casino

    Established 2021

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    Colourful & Fun Bingo/Casino Site

    ‘Bubble Pots’ Progressive Jackpots

    Win up to £750 with Daily Free Games

    Double Bubble Casino offers plenty of regular promotions including play for free games – with the chance to win free spins and cash prizes.

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    Mr Mega Casino

    Established 2021

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    Dual Casino & Sportsbook Platform

    Regular Casino Tournament Prizepools

    Live Casino with Over 100 Tables

    Mr Mega Casino is one of several themed casinos on the Aspire Global International platform and boasts over 100 live dealer roulette and blackjack tables.

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    Fever Slots Casino

    Established 2016

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    Vibrant ‘Disco Fever’ Theme

    Earn Trophies & Get Free Spins of the Mega Reel

    Monthly Prize Draw Giveaways

    Fever Slots is a colourful casino that helps players ‘turn up the heat’ with their multiple ongoing promotions and prize draws. Complete tasks as you play to earn trophies and win free spins on the ‘Mega Reel’.

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    King Casino

    Established 2019

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    Regal Themed Casino Site

    Monthly Slots Tournaments & Daily Prize Drops

    ‘Wager Free Wednesday’ Free Spins

    King Casino is one of various UK casino sites on the Aspire Global casino platform, which means regular slots promotions and the widest selection of live casino tables for all stake levels.

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    PlayOJO Casino

    Established 2016

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    No Wagering Requirements, Ever!

    ‘Mobile Casino Product of the Year’ 2023

    ‘Slots Operator of the Year’ 2023

    PlayOJO market themselves as ‘The Fair Casino’ and their unique OJOplus feature gives you free money back on every bet you make, win or lose. They also offer players daily ‘Kicker’ promotions.

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    Casimba Casino

    Established 2017

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    Regular Cashback Bonuses & Prize Draws

    Loyalty Program with First 500 Points Free

    Live Chat Support Available 24/7

    Casimba Casino has been a ‘roaring’ success since launching in 2017. The site is fully optimised for mobile and offers players a slick and smooth user experience, plus plenty of promotions.

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    Dream Vegas Casino

    Established 2018

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    Regular Cash Giveaway Draws

    Multiple Blackjack Games with 99.63% RTP

    VIP Club with a Salon Privé for Elite Players

    Dream Vegas Casino aims to recreate the magic and excitement of the Vegas strip and is fully optimised for mobile use. Their generous sign-up bonus is split over your first three deposits.

  34. 34


    Lucky Vip Casino

    Established 2016

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    Up to £50 Daily Cashback

    Lucky VIP Loyalty Points

    Second & Third Deposit Incentives

    LuckyVIP promotes itself as ‘Your Cashback Casino’ with 5% cashback on any losses up to £50 daily. They have also introduced ‘Faster Withdrawals’ with 80% of withdrawals back in your bank account within 10 minutes.

  35. 35


    mr.play Casino

    Established 2017

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    Distinguishing ‘Moustache’ Branding

    Dual Casino & Sportsbook Platform

    Regular Promotions & Tournaments

    Mr.Play Casino has a fun style of its very own, with a memorable handlebar ‘tache wherever you look. But it’s not just for well-groomed gentlemen and boasts a good variety of slots and scratchcards.

  36. 36


    BetVictor Casino

    Established 1946

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    Long Established UK Sportsbook & Casino

    Brand Ambassadors Harry Redknapp & Rachael Blackmore

    Live Chat Support Available 24/7

    BetVictor’s online casino was launched back in 2000 and we particularly enjoy their exclusive Sports Roulette table with live sports streamed as you play.

  37. 37


    Sun Play Casino

    Established 2017

    More Details

    Cash Drop – win Real Cash Prizes every day

    8 Unique Promotions Every Month

    Over 1000 Slots games and 8 Unique Bingo Rooms to choose from

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    PlaySunny Casino

    Established 2010

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    No Frills, Slots-First Casino

    £1,000,000 ‘Drops & Wins’ Every Month

    Redeem ‘PlaySunny’ Points for Free Spins

    PlaySunny Casino offer a wide selection of ‘only the hottest’ slot games, including over 40 jackpot slots. They also have a more limited number of table games, instants and live casino games.

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    Lucky Admiral Casino

    Established 2015

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    Fortune Games Casino

    Established 2023

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    Cash Drop – win Real Cash Prizes every day

    8 Unique Promotions Every Month

    Over 1000 Slots games and 8 Unique Bingo Rooms to choose from

  41. 41


    Parimatch Casino

    Established 1994

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    Dual Casino & Sportsbook Platform

    Brand Ambassador Conor McGregor

    Official Partner of Chelsea & Leicester City

    Parimatch Casino is unrivalled in terms of the number and variety of casino games on offer, including over 500 jackpot slot games. They are the official betting partner of both Chelsea FC & Leicester City FC.

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    Bally Casino UK

    Established 2023

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    Famous US Casino Brand now in the UK

    Daily & Monthly Free Games with Cash Prizes

    Unique ‘Box Bonanza’ Reward Games

    Bally’s is one of the most recognisable brands in the gambling world, with land-based casinos across the USA, including the famous Tropicana Casino in Las Vegas. It now brings its renowned gaming heritage across the pond with a UK online casino site.

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    Jackpot Village Casino

    Established 2019

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    Earn Points for Entry to Prize & Cash Draws

    ‘Village Fete’ – Monthly £10,000 Cash Giveaway

    Home to Over 70 Game Providers

    Jackpot Village Casino, as the name suggests, focusses on slot games for those who dream of winning big jackpots. But they also offer an extensive range of favourite table games and Live Casino options.

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    Plaza Royal Casino

    Established 2020

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    Las Vegas Strip Themed Casino

    Over 100 Live Casino Tables

    Regular Casino Tournament Prizepools

    Plaza Royal Casino is a Vegas themed casino on the renowned Aspire Global International platform. It has a particularly wide range of live dealer table games to suit both small stakers and high rollers.

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    Casushi Casino

    Established 2020

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    Wacky & Colourful Japanese Sushi Theme

    Exchange Casushi Points for Free Spins

    Daily Prize Drops & Weekly Tournaments

    At Casushi Casino every time your loyalty bar fills up, their unique ‘Sushi Train’ slot game pops up and a winning line of sushi earns you Casushi Points. You can exchange these points for bonus spins across a range of games at the Casushi Shop.

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    No Bonus Casino

    Established 2013

    More Details

    No-Bonus, No-Nonsense Casino

    10% Cashback Every Day

    All Customers Treated as VIP’s

    No Bonus Casino offers a unique scheme whereby, in place of casino bonuses, they simply give all players 10% cashback on any losses the following day (with no wagering requirements).

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    Pink Casino

    Established 2012

    More Details

    ‘Lady Friendly’ Dual Casino & Bingo Platform

    Part of Award-Winning Leo Vegas Group

    Regular Free Chips Promotions

    Pink Casino calls itself the ‘ultimate lady friendly online casino’ and is brought to you by the multi-award-winning casino operator Leo Vegas. Of course, all genders are welcomed.

  48. 48


    FruitKings Casino

    Established 2019

    More Details

    Fun & Vibrant ‘Jungle Kingdom’ Theme

    Complete the Treasure Trail for Rewards & Prizes

    Daily Prize Drops & Weekly Tournaments

    Fruit Kings Casino has a gift shop which rewards you for playing – exchange ‘monkey points’ for free spins, cash bonuses and other prizes.

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    Pokerstars Casino

    Established 2001

    More Details

    Official Partner of the Red Bull F1 Team

    $10,000 Daily Casino Race Leaderboards

    PokerStars Rewards: Exchange StarsCoin for Cash

    PokerStars Casino is bought to you by the world renowned poker operator which is part of the global gaming group Flutter Entertainment, who also own the likes of Paddy Power and Betfair.

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    Amber Spins Casino

    Established 2023

    More Details

    Modern Casino Slots Site

    Daily Free Spins for all Players

    Up to 2.5% Monthly Cashback

    Amber Spins Casino, as the name suggests, is a slots site with a broad selection of ‘jingling jackpots’ and a rewards programme where you earn points as you play to boost your level.


Our Picks for Best Online Slot Sites

Before we get on to anything else, we’re diving straight in with our top choices for the best UK online slot sites. Our casino slots experts at Gambling.com will always give you the real deal, with upsides and downsides for each casino we recommend so you can trust our reviews.

Best First Deposit Slot Site: Dream Vegas Casino

  • Best Features: Apart from a vast selection of slot games from top-tier developers, Dream Vegas Casino offers a great first deposit bonus of up to £300 plus 150 free spins to enhance your gaming experience.
  • Biggest Negatives: With only bonus funds contributing to the 35x wagering requirement, it can be challenging to withdraw your winnings quickly.
  • Alternative: LeoVegas Casino
  • Our View: Despite the steep wagering requirements, Dream Vegas Casino is an excellent choice if you’re looking for variety and a generous start to your online slots UK journey.

Dream Vegas Casino

Established 2018

Best Free Spins Slot Site:  Kwiff Casino

  • Best Features: Kwiff Casino’s welcome offer is all about free spins, giving you up to 200 free spins over the first five days from your first deposit. This gives you numerous opportunities to try out their diverse slot games without risking your funds.
  • Biggest Negatives: On the flip side, you might find that these free spins are often restricted to specific slot games, limiting your exploration of the wider slot game library.
  • Alternative: Fun Casino
  • Our View: Although the free spins are confined to certain games, Kwiff Casino offers an impressive platform for slot lovers with their significant free spins offer. It’s the best online slots site if you enjoy spinning the reels without risking much of your own money.

Kwiff Casino

Established 2015

Best Progressive Jackpots Slot Site:  Spin&Win Casino

  • Best Features: Spin&Win Casino has close to 200 progressive jackpot slots amongst an offering of more than 18,000 jackpot slots – an exceptional offering of progressive jackpots, providing you with a chance to win substantial sums of money across a variety of thrilling slot games.
  • Biggest Negatives: Although not particular to Spin&Win Casino, the chances of winning these huge jackpots are generally low and the high volatility of such games may not suit every player’s preferences.
  • Alternative: Playgrand Casino
  • Our View: Even with the risks associated with high volatility games, Spin&Win Casino stands out for its wide range of progressive jackpot slots. If you’re chasing the excitement of a big win, this top slots casino could be your go-to destination.

Best Megaways Slot Site: Rainbow Riches Casino

  • Best Features: Rainbow Riches offers the possibility of gold at the end of the slots rainbow, with thousands of ways to win on each spin. You can even try many of the slots on offer in demo mode before committing any money towards them.
  • Biggest Negatives: You might find the site somewhat limited if you’re a bonus hunter – it doesn’t exactly have the widest range of promotions.
  • Alternative: JackpotJoy Casino
  • Our View: Not only does Rainbow Riches win the best Megaways slot site award, but it is also one of the most comprehensive casino sites you will encounter thanks to the fact it marries casino with bingo and poker. If you’re out for a one-stop shop with an emphasis on Megaways, this casino is a top-tier choice.

Best Slot Site for Themed Slots: PartyCasino

  • Best Features: At PartyCasino, you’ll find a comprehensive array of branded slots based on popular TV shows, movies, and cultural phenomena, giving you a chance to engage with your favourite themes in an interactive gaming environment.
  • Biggest Negatives: The slot site’s primary emphasis is on feature-rich branded slots, so you might feel a bit let down if you’re interested in more traditional or simpler slot formats.
  • Alternative: HeySpin Casino
  • Our View: While PartyCasino may not cater as much to lovers of classic slots, its focus on themed slots makes it a highly engaging platform for UK slots players seeking immersive, pop culture-themed gaming experiences. If you love the cross-over between entertainment and gambling, this is a top pick.

PartyCasino

Established 1997

Types of Online Slots

The earliest online slots were quite straightforward, typically featuring 5 reels with 3 rows. The very first online video slot to include a bonus round, known as ‘Reel ‘em In’, was introduced in 1996.

Fast forward almost two decades, and today’s players are presented with an entirely new generation of online slots, offering various formats and enticing features:

Fruit Machine Slots

Unsurprisingly, these slots draw inspiration from traditional pub fruit machines. They typically feature a retro style and are composed of either 3 or 5 reels, with basic graphics and sounds.

Reel King is a prime example of a fruit machine slot that has made a successful transition from a pub kiosk to online slot sites, including at the appropriately named Pub Casino.


Pub Casino

Established 2023

Classic Slots

NetEnt’s Gonzo’s Quest and Starburst are considered modern day classics, while purists would tend to classify true classic slots to be games such as Barcrest’s Action Bank or IGT’s Da Vinci Diamonds.

Megaways Online Slots

With an impressive 117,649 ways to win, it’s easy to see the appeal of the innovative Megaways game mechanic, especially when the cost per spin can be as low as 20p. 

Games like Who Wants to Be a Millionaire Megaways (Big Time Gaming), Wild Celebrity Bus Megaways (Pragmatic Play) and Fishin’ Frenzy Megaways (Blueprint) demonstrate how this exciting game mechanic can be integrated into different online slots.

Must Drop, Daily Drop and Mega Drop Jackpot Slots 

Must Drop Jackpot slots feature a jackpot prize that must be won before it hits £1,000, while Daily Drop Jackpots are guaranteed to drop before 22:00 GMT each day.

Meanwhile, Mega Drop Jackpot Slots are progressive jackpots which will drop before they reach a maximum payout value, rather than grow indefinitely. The ‘Epic’ Mega Drop Jackpot maximum amount is £15,000.

Slingo Slots

Slingo, a blend of ‘Slots’ and ‘Bingo,’ provides a distinctive gaming experience where players complete a bingo-style grid with numbers spun on a slot reel.

The goal is to match numbers to complete winning lines (‘slingos’) and advance up the prize ladder toward a full-house and the top prize.

Slingo has gained significant popularity, leading to the creation of franchised versions like Tetris SlingoStarburst Slingo and my favourite, Britain’s Got Talent Slingo.

High Volatility Slots

Nowadays, game developers are eager to create highly volatile slots, providing players with the opportunity for larger but less frequent wins

Hacksaw Gaming, in particular, have gained attention for their extremely volatile online slots, including titles like Wanted Dead or A WildCubesItero and Chaos Crew. In these games, it truly is an all-or-nothing experience, emphasising a high-risk, high-reward style of gameplay.

Maximum Win Slots

Many seasoned slot players, myself included, have yet to hit ‘max win’ on one of the highest paying slots.

NetEnt were the first to break the 100k barrier with Dead or Alive 2, offering a maximum payout of 111,111x your stake, later surpassing it with the release of Starburst XXXtreme at 200,000x. 

However, Nolimit City’s Tombstone RIP now tops the charts, with an unprecedented 300,000x payout, achieved soon after the game’s release in January 2022. Such wins are among the reasons why Nolimit City slots have secured a place in the favourite slots lists of many players.

Progressive Jackpot Slots

The dream of landing a life-changing fortune is on offer with progressive jackpot slots, with each bet contributing a small portion to a continually growing jackpot.

These progressive online slot pools keep on increasing until one player strikes it rich.

The biggest are the WowPot and Mega Moolah series of jackpot slots, but below we list all of the big online slots jackpots currently up for grabs, along with the best UK slot sites where you can try your luck for each.

Online Slot Progressive Jackpot Amounts (December 2023)

Microgaming launched the original safari-themed Mega Moolah progressive jackpot slot back in 2006 to much acclaim. 

Since then, the Mega Moolah series has been expanded to include a variety of titles, such as Fortunium Gold, Mega Moolah Goddess and Absolootly Mad – the latter of which holds the record of the largest online slots jackpot ever won (£16.9 million in April 2021).

That monster win came just two weeks after a record WowPot jackpot of £15.2 million, won by a UK 32Red player on the Book of Atem game.

But hold the front page as the WowPot jackpot pool is currently over £40 million and is just waiting to be won again. Other popular games in the WowPot series include Sisters of Oz, Wolf Blaze and Sherlock & Moriarty.

Whilst the aforementioned slots contribute to shared jackpot pools, the following are stand-alone games, each boasting its own progressive jackpot.

Jackpot Games Current Jackpot Where to Play (UK)
Jackpot Giant £6.4 million PartyCasino
Leprechaun’s Luck £2.6 million Bet365
Beach Life £2.3 million Bet365
Mega Fortune £1.2 million NetBet

 


Mr Vegas Casino

Established 2019

Online Slot Sites Software

We’ve spoken a couple of times in this article about game providers and we wanted to add a little more information about that. The first thing to note is that almost all casinos get their games from 3rd party casino software providers. These companies create the games and then sell off the rights to the casinos.

There are a couple of reasons why casinos do this. The first is that it saves investing in the huge costs that come with game development and the research and development that comes with them.

The second is that it’s one less job to look after. They know they can sign an agreement, often with several developers, and then the games are ready to go within their casino.

This is now a highly competitive marketplace and there is a huge emphasis on improving existing games and coming up with new, exciting titles. It’s big money for the developers, but the rewards are there as well, should they succeed.

Below we’ve listed several of the leading software developers for online slots UK.

NetEnt

NetEnt is a Swedish based company that has had to work hard to get to the top of the tree. It’s been the game innovation that’s allowed it to succeed, and which has led to a range of slots that are now iconic.

Two standout games from its ever-increasing back catalogue are that of Gonzo’s Quest and Starburst. The former now figureheads the NetEnt brand, whilst Starburst is recognised as one of the go-to online slots for most bonus spins offers.

Playtech

Another of the big hitters is Playtech. Playtech was one of the original casino game developers back in 1999 and has been in since the ground up.

Playtech is one of few providers able to power whole casinos on its own, highlighting the range of games that it offers. There are a plethora of standout titles, including a huge range of branded slots. Some of these include Justice League, The Dark Knight, and Frankie Dettori’s Magic Seven.

Yggdrasil Gaming

Yggdrasil Gaming is one of the many success stories that you hear about within the game software sector. The company was formed back in 2013 but has quickly cemented itself as one of the best in the business.

Yggdrasil doesn’t get the accolades that the bigger brands do, but the quality of games, particularly slots, is second to none. Games such as Vikings Go Wild, Vikings Go Berserk, and Blood Moon Wilds are three of its marquee titles.

Play’n GO

Play’n GO is another Scandinavian brand doing well in the online slots section. Formed in 2007, it has now a wealth of games at its disposal and has been able to put a precedence on making sure that RTP rates are high as they can be.

Standout games from the brand include the likes of Troll Hunters 2, Rich Wilde and the Shield of Athena, and Rally 4 Riches. What’s noticeable about each of these games is that they follow an exciting story as you play, unlocking a max bonus round and features that many of Play’n GO’s competitors don’t have.

IGT

IGT has been able to specialise in themed games, as well as branded slots over the last decade or so. The company splits its work between online and live casinos, creating a huge number of slot machines that you see all over the world in brick-and-mortar casinos.

Online, it has got a massive range of casino slots to choose from. What’s epic about IGT is that any games that are dated or are no longer up to scratch either get refurbished or ditched. This is rare, but from a user experience perspective, something that is highly welcomed.

Standout games here include the likes of Family Guy, Ghostbuster, Baywatch, Cleopatra, and Wheel of Fortune.

Novomatic

Novomatic may not be the first brand that you think of when it comes to software developers, but it is the oldest in this list, dating back to 1980. The company not only has a great range of online slots but also over 2,000 land-based casinos that are hosting its games.

Games wise, the Book of Ra is what it is best known for, but other games include Lord of the Ocean, Dolphin’s Perl, and Sizzling Hot, each adding to a strong package that’s on offer from Novomatic.

Online Slots UK Bonuses and Free Spins

Online casinos often entice players with welcome offers, typically in the form of a welcome bonus or bonus spins. The specific offer varies based on factors like your initial deposit and wagering requirements.

It’s essential to understand that welcome bonuses are not just free money; they come with wagering requirements. To withdraw bonus funds, you must wager them a certain number of times, usually between 20x and 50x the bonus amount. For instance, with a £100 bonus and a 20x wagering requirement, you’d need to place £2000 in bets (20 x £100) before you can withdraw.

Wagering also has game limitations, meaning not all bets contribute equally. Online slots typically have a 100% contribution rate, but other games may vary.

Consider the casino bonus expiry date, eligible games, whether the wagering applies to the bonus alone or both bonus and deposit, and which deposit methods qualify for the offer.

Bonus spins are more straightforward; you receive spins for specific slots, and you can usually keep your winnings. Watch for limitations on stake per spin, the number of spins, and eligible games.

Best No Deposit UK Slots Sites

The no deposit bonus offer is so good, it had to have a section of its own. A no deposit bonus means that new players are rewarded with extra funds simply for signing up, and just like the name suggests, the player is not required to deposit a wager. The only thing you need to do is find an online slot site that offers a no deposit bonus, sign up and verify your account, and the casino will credit your balance with the bonus money. Just like that!

While no deposit bonuses are rare, we have uncovered a special offer at NetBet. They are currently providing 20 bonus spins with no deposit on the popular online slot Book of Dead. To claim this offer, use the code BOD22 when signing up. This is an excellent opportunity if you want to start your gaming experience without any initial investment.


NetBet Casino

Established 2001

Highest RTP Slots 2023

Here are the top 15 best paying slot games in the UK ranked by their advertised RTP (Return to Player) percentage.

Most online slots in the UK typically have RTPs ranging from 92% to 96%, but all of these best paying slots feature an RTP of 97% or higher:

The RTP percentage is a factor to consider when selecting which online slots to play. This provides an estimate of the expected returns over an extended period of time.

Theoretically, for every £1 staked on an online slot game with a 98% RTP, 98p is returned.

The RTP % of a slot machine is not guaranteed, it’s a calculated long-term average of the amount paid out divided by the amount staked on that game. It does not indicate the outcome of any individual game session.

But by choosing the best paying online slots with higher RTPs, you are likely to get more value for your money over the long run and maximise your bankroll.

However, some players prefer online slots with lower RTPs and higher ‘max wins’ or the allure of massive progressive jackpots.

For example, despite Mega Moolah‘s RTP of 88.12%, it has awarded several huge jackpots to UK players, like the £13.2 million won by Jonathan Heywood at Betway in 2015.


Betway Casino

Established 2006

Online Slots Tournaments UK (December 2023)

Slots tournaments add a competitive edge to spinning the reels, with additional rewards above and beyond regular slots gameplay.

In these scheduled tournaments, players compete against each other to win cash prizes or other rewards.

While each slots tournament has its own rules, the goal is always to accumulate points to rise up the leaderboard.

Here we have listed the tournaments currently available at UK slot sites:

Slots Tournament Prize Pool Where to Play (UK)
Drops & Wins (Weekly) £255,000 MagicRed
Drops & Wins (Daily) £35,000 MrQ
Red Tiger (Weekly) £5,000 Grosvenor
High Volatility (Monthly) £1,750 Pub Casino

The most popular online slots tournaments in the UK are Drops & Wins, available exclusively on Pragmatic Play slots games.

With a monthly prize pool of £2 million, this promotion offers prize-paying positions on weekly tournament leaderboards, plus random daily prize drops:

£255,000 for weekly leaderboards x 4 weeks = £1,020,000

£35,000 in daily prize drops x 7 days a week x 4 weeks = £980,000

We especially like the random daily prize drops which give everyone who plays a chance to win, not just those who make it onto the weekly leaderboard.


MagicRed Casino

Established 2014

Best Slot Games – What are They?

Of course, what makes the best slot games is not just the RTP as other factors need to be taken into consideration. One of these is finding games developed by the top software providers. The best online casinos in the UK will carry games from multiple providers and might also have exclusive casino slots which you will not find at any other casino. The best slot games will also provide players with a thrilling gaming experience, keeping the player involved. This comes in the form of stunning visuals, fun themes, spins, bonus rounds, and other exciting features.

Top 10 Real Money Online Slots UK

Begambleaware.org. Opt in & deposit £10+ within 7 days & wager 35x to get up to £100. Wagering contributions vary. 7 day expiry. Receive 10 – 50 Free Spins worth 10p on Big Bass Splash. 3 day expiry. Eligible on 2 deposits. T&Cs Apply.” data-cta=”1″ data-rtp=”96.21%” data-volatility=”High” data-maximumwin=”500,000.00″ >

Software Provider

#ad. 18+. Gamble Responsibly. Begambleaware.org. Opt in & deposit £10+ within 7 days & wager 35x to get up to £100. Wagering contributions vary. 7 day expiry. Receive 10 – 50 Free Spins worth 10p on Big Bass Splash. 3 day expiry. Eligible on 2 deposits. T&Cs Apply.
Begambleaware.org. #AD New customers only, min deposit £10, wagering 40x, max bet £5 with bonus funds. Max bonus
is 100% up to £100. No max cash out on deposit offers. Welcome bonus excluded for players
depositing with Skrill or Neteller. Cashback is cash with no restriction. Full T&C’s apply. +18,
Please Gamble responsible. BeGambleAware.org” data-cta=”1″ data-rtp=”96.09%” data-volatility=”Low” data-maximumwin=”50000″ >

Software Provider

#ad. 18+. Gamble Responsibly. Begambleaware.org. #AD New customers only, min deposit £10, wagering 40x, max bet £5 with bonus funds. Max bonus
is 100% up to £100. No max cash out on deposit offers. Welcome bonus excluded for players
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Please Gamble responsible. BeGambleAware.org
Begambleaware.org. #AD New customers only, min deposit £10, wagering 40x, max bet £5 with bonus funds. Max bonus
is 100% up to £100. No max cash out on deposit offers. Welcome bonus excluded for players
depositing with Skrill or Neteller. Cashback is cash with no restriction. Full T&C’s apply. +18,
Please Gamble responsible. BeGambleAware.org” data-cta=”1″ data-rtp=”96.71%” data-volatility=”High” data-maximumwin=”525000″ >

Software Provider

#ad. 18+. Gamble Responsibly. Begambleaware.org. #AD New customers only, min deposit £10, wagering 40x, max bet £5 with bonus funds. Max bonus
is 100% up to £100. No max cash out on deposit offers. Welcome bonus excluded for players
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Please Gamble responsible. BeGambleAware.org
Begambleaware.org. #AD New customers only, min deposit £10, wagering 40x, max bet £5 with bonus funds. Max bonus
is 100% up to £100. No max cash out on deposit offers. Welcome bonus excluded for players
depositing with Skrill or Neteller. Cashback is cash with no restriction. Full T&C’s apply. +18,
Please Gamble responsible. BeGambleAware.org” data-cta=”1″ data-rtp=”96.48%” data-volatility=”Medium” data-maximumwin=”2110000″ >

Software Provider

#ad. 18+. Gamble Responsibly. Begambleaware.org. #AD New customers only, min deposit £10, wagering 40x, max bet £5 with bonus funds. Max bonus
is 100% up to £100. No max cash out on deposit offers. Welcome bonus excluded for players
depositing with Skrill or Neteller. Cashback is cash with no restriction. Full T&C’s apply. +18,
Please Gamble responsible. BeGambleAware.org
Begambleaware.org. #AD New customers only, min deposit £10, wagering 40x, max bet £5 with bonus funds. Max bonus
is 100% up to £100. No max cash out on deposit offers. Welcome bonus excluded for players
depositing with Skrill or Neteller. Cashback is cash with no restriction. Full T&C’s apply. +18,
Please Gamble responsible. BeGambleAware.org” data-cta=”1″ data-rtp=”96.71%” data-volatility=”High” data-maximumwin=”1250000″ >

Software Provider

#ad. 18+. Gamble Responsibly. Begambleaware.org. #AD New customers only, min deposit £10, wagering 40x, max bet £5 with bonus funds. Max bonus
is 100% up to £100. No max cash out on deposit offers. Welcome bonus excluded for players
depositing with Skrill or Neteller. Cashback is cash with no restriction. Full T&C’s apply. +18,
Please Gamble responsible. BeGambleAware.org
Begambleaware.org. #AD New customers only, min deposit £10, wagering 40x, max bet £5 with bonus funds. Max bonus
is 100% up to £100. No max cash out on deposit offers. Welcome bonus excluded for players
depositing with Skrill or Neteller. Cashback is cash with no restriction. Full T&C’s apply. +18,
Please Gamble responsible. BeGambleAware.org” data-cta=”1″ data-rtp=”96.5%” data-volatility=”High” data-maximumwin=”500000″ >

Software Provider

#ad. 18+. Gamble Responsibly. Begambleaware.org. #AD New customers only, min deposit £10, wagering 40x, max bet £5 with bonus funds. Max bonus
is 100% up to £100. No max cash out on deposit offers. Welcome bonus excluded for players
depositing with Skrill or Neteller. Cashback is cash with no restriction. Full T&C’s apply. +18,
Please Gamble responsible. BeGambleAware.org
Begambleaware.org. #AD New customers only, min deposit £10, wagering 40x, max bet £5 with bonus funds. Max bonus
is 100% up to £100. No max cash out on deposit offers. Welcome bonus excluded for players
depositing with Skrill or Neteller. Cashback is cash with no restriction. Full T&C’s apply. +18,
Please Gamble responsible. BeGambleAware.org” data-cta=”1″ data-rtp=”95.98%” data-volatility=”High” data-maximumwin=”240000″ >

Software Provider

#ad. 18+. Gamble Responsibly. Begambleaware.org. #AD New customers only, min deposit £10, wagering 40x, max bet £5 with bonus funds. Max bonus
is 100% up to £100. No max cash out on deposit offers. Welcome bonus excluded for players
depositing with Skrill or Neteller. Cashback is cash with no restriction. Full T&C’s apply. +18,
Please Gamble responsible. BeGambleAware.org
Begambleaware.org. Wager £/€20 on slots and Get 40 Cash Free Spins for five consecutive days.* New customers only. £/€20 stake on slots each day within 5 days of 1st deposit to qualify. £0.1 Spins on Book of Dead. £/€250 total max withdrawal. Full T&Cs apply.” data-cta=”1″ data-rtp=”96.00%” data-volatility=”High” data-maximumwin=”250000″ >

Software Provider

Gold Blitz

#ad. 18+. Gamble Responsibly. Begambleaware.org. Wager £/€20 on slots and Get 40 Cash Free Spins for five consecutive days.* New customers only. £/€20 stake on slots each day within 5 days of 1st deposit to qualify. £0.1 Spins on Book of Dead. £/€250 total max withdrawal. Full T&Cs apply.
Begambleaware.org. Opt in & deposit £10+ within 7 days & wager 35x to get up to £100. Wagering contributions vary. 7 day expiry. Receive 10 – 50 Free Spins worth 10p on Big Bass Splash. 3 day expiry. Eligible on 2 deposits. T&Cs Apply.” data-cta=”1″ data-rtp=”96.58%” data-volatility=”High” data-maximumwin=”500000″ >

Software Provider

#ad. 18+. Gamble Responsibly. Begambleaware.org. Opt in & deposit £10+ within 7 days & wager 35x to get up to £100. Wagering contributions vary. 7 day expiry. Receive 10 – 50 Free Spins worth 10p on Big Bass Splash. 3 day expiry. Eligible on 2 deposits. T&Cs Apply.
Begambleaware.org. #AD New customers only, min deposit £10, wagering 40x, max bet £5 with bonus funds. Max bonus
is 100% up to £100. No max cash out on deposit offers. Welcome bonus excluded for players
depositing with Skrill or Neteller. Cashback is cash with no restriction. Full T&C’s apply. +18,
Please Gamble responsible. BeGambleAware.org” data-cta=”1″ data-rtp=”96.55%” data-volatility=”High” data-maximumwin=”1230500″ >

Software Provider

#ad. 18+. Gamble Responsibly. Begambleaware.org. #AD New customers only, min deposit £10, wagering 40x, max bet £5 with bonus funds. Max bonus
is 100% up to £100. No max cash out on deposit offers. Welcome bonus excluded for players
depositing with Skrill or Neteller. Cashback is cash with no restriction. Full T&C’s apply. +18,
Please Gamble responsible. BeGambleAware.org

Tips for Playing Online Slots UK

For beginners and seasoned players alike, playing online slots can be an exciting and potentially lucrative pastime. To maximize your enjoyment and improve your chances of winning, here are some key strategies and tips to consider:

1. Understand the basics: It’s crucial to grasp the basics before you start playing. Understand what paylines, reels, and symbols mean. Learn about different types of slots – classic, video, progressive, and more. Also, get familiar with terms like Return to Player (RTP) and Volatility. RTP refers to the percentage of all wagered money a slot machine will pay back to players over time, and Volatility relates to the risk level associated with a particular slot game.

2. Choose the Right Slot: With the vast array of slots UK available, selecting the right one can seem daunting. The key is to find a slot that fits your preferences and playing style. Consider factors like the theme, RTP, Volatility, and the number of paylines when making your choice.

3. Utilize Free Plays and Bonuses: Most online slots UK sites offer free plays, bonuses, and promotions. These can be a great way to try out a game before risking real money, or to extend your playtime. Always read the terms and conditions associated with any bonus, as there can be wagering requirements or other restrictions.

4. Manage Your Bankroll: Responsible gaming involves setting a budget for your online slot play and sticking to it. Never wager more than you can afford to lose, and consider setting a time limit for your play sessions to prevent getting carried away.

5. Keep It Fun: The most important tip of all is to remember that online slots should be a fun experience. It’s thrilling to win, but remember, the primary goal of playing slots is entertainment. Keeping this perspective can help make your online gaming experience more enjoyable.

UK Paypal Slot Sites

Independent slot sites have come a long way over the last decade or so, and one of the biggest innovations has been the number of ways that you can get your money in, and most importantly, out of the casino.

With PayPal, gone are the days of having to wait sometimes even more than a week to be able to access your winnings. UK slot sites that take PayPal are becoming increasingly popular since Paypal is usually the fastest way to get your money out. Withdrawals can be back into your account as quickly as within 24 hours, and most of the time, you can get your cash immediately if you need to. Another benefit to playing at a PayPal casino is that it is secure and your payments will remain semi-anonymous since you won’t have to give the casino your banking details. Having said that, you will still need to verify your PayPal account.

There are a series of other payment methods that you can access as well. These include:

Best Online Casino Game Sites

Online casino game sites differ from online slot sites in their offerings. As the name suggests, online slot sites primarily focus on online slot games. Their advantage is the expansive game selection, encompassing various types of online slot games. Moreover, their bonuses are tailored for slot enthusiasts, often presenting opportunities for free spins and slot tournaments.

However, a limitation of online slot sites is their exclusive emphasis on slots. If you desire a change of pace and want to explore other gaming options, sites that offer both slots and table games would be more suitable. These casino sites provide not only slot games but also classic casino offerings like roulette, blackjack, poker, baccarat, and more. Their bonuses typically consist of matched deposits, which players can use on either slots or table games.

Established 2003

#ad. 18+. Gamble Responsibly. Begambleaware.org. 18+. New bettors; Use code CASINO10; Wager bonus 50x to release bonus winnings; Valid 30 days; Stake contribution and payment method exclusions apply; T&C apply.

Established 2015

#ad. 18+. Gamble Responsibly. Begambleaware.org. 18+. New players only. Min deposit £10. Bonus funds are 121% up to £100. Bonus funds are separate from cash funds and subject to 35x wagering requirement. Only bonus funds count towards wagering contributions. £5 bonus max bet. Bonus funds must be used within 30 days, spins within 10 days. Affordability checks apply. Terms Apply. BeGambleAware.org

Established 2002

#ad. 18+. Gamble Responsibly. Begambleaware.org. 18+. BeGambleAware.org. New accounts only. Min. £10 deposit, debit card only. Up to 50x wagering, game contributions vary, max. stake applies, 7 day expiry. See full terms. Gamble responsibly. www.begambleaware.org

Best Online Slot Sites UK – The Verdict

Although online slot sites seem to be sprouting every day in the UK, we all know that not all of them deserve our and your time and money. Since it is important for us that you don’t fall for any traps, our Gambling.com slots UK team makes sure to only recommend the top UK slot sites.

By checking out any of the slot sites recommended on this page, you can be sure that you’ll be enjoying the best online slot offers with the best real-money games, all in the safest gambling environment possible.

FAQ

Yes, you can win real money on online slots at UKGC-licensed sites listed on the page. These slot casinos use random number generators, providing fair and regulated gameplay, enabling players to potentially win real money through various slot games.

For the best payouts, Mr Vegas and PartyCasino stand out among the top slot sites. They’re known for high RTP slots, enhancing players’ chances of winning.

The best UK slots are found on the top slot casinos, as listed on the page. These sites provide an extensive selection of slots from renowned software developers, ensuring high-quality graphics, engaging gameplay, and a wide variety of themes and features.

Yes, all online slots at the sites recommended on this page are accessible on mobile. Each of these slot sites offers either a dedicated mobile app or a mobile-optimised version of their website, ensuring seamless gameplay on various devices.

Players can discover a wide variety of slot games at all the best slot sites. These include classic slots, video slots, progressive jackpots, and themed slots, catering to a wide range of interests and gaming preferences. You will also find slot tournaments if you prefer a more competitive edge.

A slot site’s safety and legitimacy are best determined by its UKGC license, as with all the sites recommended on the page. This licensing is a hallmark of stringent regulatory standards, ensuring player safety, fair play, and the integrity of the gaming experience.

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