Best Slot Sites 2021

Play the UK's top online slots

Top Online Slot SItes

Finding the best online slot websites to suit your needs can be difficult. With every site claiming to be the best site for slots, how can you tell which is the best to sign up and deposit with? 

We’ve reviewed and rated the country’s most trustworthy slots brands to provide an up-to-date list of the latest slot machine bonuses available to claim now. Every slots site in our list is fully licensed by the UK Gambling Commission.

Take your pick of the top UK slot sites and games in 2021 here.

Related categories: Real Money Slot Sites | New Slot Sites | Mobile Slot Sites

Top Online Slot SItes
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We rely on our relationships with partner sites to keep our service free. We receive compensation from many of the brands featured on Online Bingo UK which may influence how we display them.

However, we only recommend brands that we believe are safe, fair and trustworthy. The commission we receive does not affect the impartiality of our content.
1

Winomania

76%
76%

150 Free Spins
On First Deposit

18+ only. Full T&Cs apply.

Winomania is the perfect casino for players while either on their mobile or tablet devices. The site and casino games have been fully optimised for smartphones and tablets to give the best experience possible. Newcomers can get a deposit £10 to claim 150 free spins across 6 exciting slot games!

Terms & Conditions: 1st deposit only | min deposit £10 | 25 free spins for 6 selected games | X40 wagering on free spins winnings | T&C apply

  • First Deposit: FS150
  • Slot Wagering: 40x
  • Launched: 2018
2

Wink Slots

73%
73%

30 Free Spins
No Deposit!

Over 18s and new players only.

Join one of the most popular Dragonfish slot sites around. Wink Slots has a great selection of popular slot titles; Starburst, Millionaire Genie and Irish Luck. Sign up and deposit using promo code - BIGBONUS and you’ll get a deposit match up to £400 plus 50 free spins. Wink Slots also have a choice of jackpot, instant win and live dealer games for players to try their luck on.

Terms & Conditions: New players only. Max 30 Free Spins [FS} available for 7 days. FS wins granted in bonus after all FS used. FS wins set at £1–£4 (per 10 FS). Bonus wins are capped at £100 exc. jp. wins. To withdraw games bonus & related wins, wager 30x the amount of bonus. Wagering req. vary by game, withdrawal restrictions & further T&Cs apply.

  • First Deposit: 100%
  • Slot Wagering: 30x
  • Launched: 2016
3

bgo Casino

78%
78%

Win up to 500
Free Spins

Over 18s and new players only.

Instantly recongisable by name, one of the most popular and best slot sites around, bgo offers a wide range of slots games, live table games like Blackjack, Hi-Lo, Baccarat, Casino Hold’em, and even Roulette. Sign up to bgo casino and deposit £10 to win up to 500 free spins!

Terms & Conditions: UK only. Win up to 500 Free Spins from Mega Wheel on 1st deposit. 24-hour expiry. Max bet £2.50, max spins win £8 per 10 spins, max Bonus win £150, selected games & 65x wagering on winnings. No Neteller/Skrill. Full T&Cs apply.

  • First Deposit: -
  • Slot Wagering: 65x
  • Launched: 2012
4

Play Magical Casino

80%
80%

150 Free Spins
+ £150 Bonus

Over 18s and new players only.

New to the market, Play Magical adds a sprinkle of magic to your gameplay! Hosting a huge selection of the best slot games from the top providers, why not see if Play Magical is going to be your new favourite site. New players can claim a £150 welcome bonus and 150 free spins!

Terms & Conditions: First 3 Deposits only. Min deposit £10 1st and 2nd deposit, min £20 3rd. Max cumulative bonus £150 and 150 spins. Bonus match amount varies per deposit. Spins awarded on one of four chosen games. 50x wagering on Deposit + Bonus, 50x on bonus spins. 10x max bonus conversion or £5,000, whichever is lower. £5 max bonus stake. Full T&Cs Apply.

  • First Deposit: 100%
  • Slot Wagering: -
  • Launched: 2019
5

Luckland Casino

80%
80%

50 Free Spins
+ £50 Bonus

Over 18s and new players only.

Will this casino bring you good luck? This casino offers you a fun and exciting play experience, and all the best slot titles you know and love. Why not try you luck at Luckland and take advantage of their £50 and 50 free spins welcome bonus offer?

Terms & Conditions: Terms and Conditions apply. New players only. 18+. Min deposit £20. Welcome package split over 3 deposits 35x wagering applies to match up bonus. 50 Spins on Starburst - 35x wagering applies to Spins. See full terms here.

  • First Deposit: 100%
  • Slot Wagering: 35x
  • Launched: 2015
6

Spela Casino

82%
82%

100% up to £200
Plus 100 Spins

Over 18s and new players only.

Spela Casino is the home to the best online slot games and live casino tables. Sign up and claim a 100% welcome bonus and 100 free spins when you deposit £10. Join thousands of other players at the live tables and start the fun.

Terms & Conditions: 18+ Full T&C's Apply. New players Only. £10 min deposit. £5 max bet using bonus. 40 x wagering applies. Bonus valid for 14 days. 20 Spins on Starburst games will be credited instantly + then 20 per day for 4 days. Free Spins valid for 72 hours from credit. Max Free Spins winnings £100. Skrill + Neteller excluded. Always refer to Bonus Terms - www.begambleaware.org

  • First Deposit: 100%
  • Slot Wagering: -
  • Launched: 2018
7

Kassu Casino

80%
80%

300 Free Spins
+ £300 Bonus

Over 18s and new players only.

New players at Kassu Casino can enjoy up to £300 bonus funds and 300 free spins. Deposit every Friday and Tuesday to receive extra bonuses and weekly free spins. Enjoy relaxed gaming aimed at a new generation of players.

Terms and Conditions: 18+ Full T&C's Apply New players Only. £10 min deposit. £5 max bet using bonus. 40 x wagering applies. Bonus valid for 14 days. 30 Spins on preselected games will be credited instantly + then 30 per day for 9 days. Free Spins valid for 72 hours from credit. Max Free Spins winnings £100. Skrill + Neteller excluded. Always refer to Bonus Terms - www.begambleaware.org

  • First Deposit: 100%
  • Slot Wagering: -
  • Launched: 2019
8

Casino Joy

80%
80%

Double Your Deposit
+ 200 Free Spins

Over 18s and new players only.

Join Casino Joy today to double your first deposit up to £200 and get 200 free spins. Choose from hundreds of popular casino games including live dealer tables and very popular slot games like Bonanza Megaways™, Danger! High Voltage and Book of Gods. Enjoy weekly promotions.

Terms & Conditions: 18+ Full T&C's Apply. New players Only. £10 min deposit. £5 max bet using bonus. 40 x wagering applies. Bonus valid for 14 days. 20 Spins on Starburst games will be credited instantly + then 20 per day for 9 days. Free Spins valid for 72 hours from credit. Max Free Spins winnings £100. Skrill + Neteller excluded. Always refer to Bonus Terms - www.begambleaware.org

  • First Deposit: 100%
  • Slot Wagering: -
  • Launched: 2018
9

Videoslots Casino

84%
84%

£200 Bonus
+ 11 Free Spins

Over 18s and new players only. T&Cs apply.

If you’re looking for slots, Videoslots Casino should be your first port of call. One of the top slot sites around, this exciting casino site offers a massive range of slot games from many top software providers, including NetEnt and Microgaming. All the latest releases can be found here, along with hundreds of classic titles and progressives.

Terms & Conditions: New players only. Min deposit £10. Wager requirement 20x. Bonus balance is paid with 10% instalments to account balance. Bonus balance is not payable. Max bet is £20. Account balance is withdrawable at any time. Upon withdrawal, any remaining bonus balance is forfeited. Full terms apply.

  • First Deposit: 100%
  • Slot Wagering: -
  • Launched: 2011
10

Sun Vegas

73%
73%

Up to
£300 in bonuses!

Over 18s and new players only.

Sun Vegas is the newest online casino from the same company that bought you the fantastic Sun Bingo, offering a mobile friendly design and a name you can trust. Enjoy live casino games and hundreds of slots with a generous 100% match welcome bonus up to £300! 

Terms & Conditions: 100% bonus up to £300 on your first deposit · New Customers Only · Min Deposit £10 · 50x WR ·  Offer must be accepted within 72 hours. Bonus Valid for 30 Days · Max bet restrictions apply · Bonus can't be withdrawn. Bonus can only be spent on Slot Games · Skrill/Moneybookers and Neteller are not valid for this promo · Real money balance can always be withdrawn.

  • First Deposit: 100%
  • Slot Wagering: -
  • Launched: 2018
11

All British Casino

78%
78%

100% up to £100
+ 10% Cashback

18+ only. Full T&Cs apply.

If you’re feeling patriotic and want a site celebrating Great Britain, All British Casino is decked out in red, white and blue. Join today and deposit to receive up to £100 in bonus cash, plus lifetime 10% cashback on lost deposits! Choose from a huge variety of Microgaming casino games including Immortal Romance, Book of OZ and Thunderstruck II.

Terms & Conditions: Minimum deposit requirement is £10 to be included for our welcome, deposit and reload bonuses. Maximum bonus available will be communicated in specific promotional offers. UK players only. 35x wager requirement applies. Bonuses have 30 day period until expiry. Further T&Cs apply. 

  • First Deposit: 100%
  • Slot Wagering: 35x
  • Launched: 2013
12

GrandMaster Jack

84%
84%

£300 Bonus
25 Free Spins

Over 18s and new players only.

Sign up and play 25 free spins on the hit NetEnt slot Gonzo's Quest at GrandMaster Casino and see how this casino strikes gold. With vsports, live tables and slots all on offer, why not give this new ProgressPlay casino a try?

Terms & Conditions: New Players Only. Wagering occurs from real balance first. 50X wagering the bonus. Contribution may vary per game. Available on selected games only. The wagering requirement is calculated on bonus bets only. Bonus is valid for 30 days from issue. Max conversion: 3 times the bonus amount. Excluded Skrill deposits. Full terms apply.

  • First Deposit: FS25
  • Slot Wagering: 50x
  • Launched: 2020
13

Karamba Casino

91%
91%

100 Spins + up
to £50 Bonus

Over 18s and new players only.

Karamba is one of the favourites for online casino and sports betting and their slot selection is equally as impressive! Check out their huge selection of online casino and table games, and even more slot games - all available at the click of a button! Sign up to claim 100 free spins and up to £50 bonus

Terms & Conditions: 18+, Terms and Conditions apply. New players only. 18+. Min deposit £10. Wagering requirement apply 35x. Offer valid for 72hr. 100 spins includes 3 deposit. Full terms and conditions apply.

  • First Deposit: 100%
  • Slot Wagering: 35x
  • Launched: 2005
14

O'reels

73%
73%

10 Free Spins
+ 100% Match Bonus

Over 18s and new players only.

O’Reels is home to hundreds of slot, casino and jackpot games from the best game suppliers in the industry, so it makes sense it is one of the favourite online slot sites. Join and deposit up to £200 for a 100% welcome bonus plus free spins. Roulette fans can claim up to 15% cashback on losses every single weekend with no wagering requirements.

Terms & Conditions: New Players Only. Wagering occurs from real balance first. 50X wagering the bonus or any winnings generated from free spins. Contribution may vary per game. Available on selected games only. The wagering requirement is calculated on bonus bets only. Bonus is valid for 30 days / Free spins valid for 7 days from issue. Max conversion: 5 times the bonus amount or from free spins: £/$/€20.

  • First Deposit: 100%
  • Slot Wagering: -
  • Launched: 2017
15

Pots of Gold

82%
82%

25 Free Spins
On Gonzo's Quest

Over 18s and new players only.

Pots of Gold may be a new kid on the block but it's definitely setting itself up as one of the best! With a huge selection of slot games to choose from you'll be wondering how you ever managed without this site. New players can sign up and claim up to £300 bonus and 25 free spins on Gonzo's Quest!

Terms & Conditions: New Players Only. Wagering occurs from real balance first. 50X wagering the bonus or any winnings generated from free spins. Contribution may vary per game. Available on selected games only. The wagering requirement is calculated on bonus bets only. Bonus is valid for 30 days only / Free spins valid for 7 days from issue. Max conversion: 3 times the bonus amount or from free spins: £20. Excluded Skrill deposits. Full Terms apply.

  • First Deposit: -
  • Slot Wagering: -
  • Launched: 2017