Best UK Slots Sites: Our Exclusive Selection

The following list is our guide to the 10 best online UK slots sites in 2021. This guide highlights one key benefit behind each of these sites. For a better look at their offers for new customers, head to our best online slots welcome offer guide.

  1. Casino at bet365 – Up to £100 New Player Bonus

    Casino at bet365 – Up to £100 New Player Bonus

    New Casino customers only. Deposit min. £10. Max. bonus £100. 20x wagering (game weighting, table coverage and max. bet rules apply) on deposit and bonus to make the bonus balance withdrawable. Time limits and T&Cs apply. Full T&Cs
  2. JOIN AND SPEND £10 & GET A £60 BONUS

    JOIN AND SPEND £10 & GET A £60 BONUS

    NEW CUSTOMERS ONLY. OPT IN REQUIRED. MIN. £10 STAKING REQUIREMENT APPLIES. MAX. BONUS £60 WITH A 40X WAGERING REQUIREMENT, TO WHICH TABLE & CARD GAMES CONTRIBUTE 20%. 30 DAY BONUS EXPIRY PERIOD APPLIES. GAME AND ELIGIBILITY RESTRICTIONS APPLY. FURTHER T&CS APPLY Full T&Cs
  3. 100% Buy in Bonus + 50 Free Spins

    100% Buy in Bonus + 50 Free Spins

    Opt in required. New customers to Casino page only. 1x per customer. Min. Buy in £10. Bonus value 100% of Buy in. Max. Bonus £300. 40x Wagering, Max Redeemable £4,000. 50 Free Spins with x35 wagering will be awarded after the Buy in Bonus is completed, Max Redeemable £1,000. Bonus expires after 7 days. Stake contributions, player, country, currency, game restrictions and terms apply. Full T&Cs
  4. £50 Welcome Bonus

    • Plethora of games

    £50 Welcome Bonus

    18+. New players only. Min bet £10 on qualifying games. 40x wager reqs (bonus only) on selected games. Bonus valid for 30 days. Certain deposit types excluded. Bets covering >70% of Roulette table excluded. T&Cs Apply. Full T&Cs
    • Plethora of games
    Review Claim Offer
  5. DEPOSIT £10 PLAY WITH £40 PLUS 100 FREE SPINS

    DEPOSIT £10 PLAY WITH £40 PLUS 100 FREE SPINS

    New UK&IRL Customers Only. Min Deposit £10 . Deposits made by e-wallets are not valid. Bonus wagering x35 on eligible games. Winnings from bonus capped at £500 . £5 Max Stake On Bonus. Spins available after bonus redeemed/lost. Spins value 0.10p. Opt In required. Full T&C's apply. Full T&Cs
  6. Wager £10 Get £30 + 100 Free Spins

    • Casino Offer for New Customers

    Wager £10 Get £30 + 100 Free Spins

    18+ new customers only. Deposit, opt in and wager £10 on selected games within 7 days of opening new account. Get 3 x £10 bonuses for selected games with up to 40x wagering plus 100 Free Spins. Bonuses expire in 7 days. Max redeemable from bonuses £750. 100 Free Spins have no wagering and expire in 7 days. T&C's Apply. Please Gamble Responsibly. Full T&Cs
    • Casino Offer for New Customers
    Review Claim Offer
  7. Deposit £10 Get £40 Casino Bonus

    Deposit £10 Get £40 Casino Bonus

    18+ www.begambleaware.org Deposit £10 play with £40 - Min deposit £10. 35x wager req. 30 day validity. Further T&C Apply Full T&Cs
  8. First Deposit Bonus 100% up to £100 & 300 Free Spins

    First Deposit Bonus 100% up to £100 & 300 Free Spins

    18+ Full T&C's Apply New players only. £10 min deposit. £5 max bet using bonus. 60x (40x referred player) 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. Ewallets excluded. - www.begambleaware.org Full T&Cs
  9. Get 50 free spins when you bet £10 on slots

    Get 50 free spins when you bet £10 on slots

    New PokerStars Casino registered players only. Min. £10 deposit, debit card only. Opt-in 14 days from registration. 7-day Free Spins expiry. Free Spins valid on Tomb of Ra Classic Slot only. Any winnings credited as cash. Full T&Cs apply. Full T&Cs
  10. DEPOSIT £20, PLAY WITH £50

    • Wide range of games

    DEPOSIT £20, PLAY WITH £50

    OFFERS AVAILABLE ON 1ST DEPOSIT ONLY. MAX REWARD £50 BONUS. 5X WAGERING. SOME GAMES HAVE DIFFERENT WAGERING CONTRIBUTIONS. SOME GAMES EXCLUDE BONUS PLAY. T&CS APPLY Full T&Cs
    • Wide range of games
    Review Claim Offer

Best UK Slots Sites in 2021 for Exclusive Slots

bet365 wins here. Exclusive slots will help stop you from going back to the same online slots time and time again. The bet365 slots site has an abundance of titles you won’t find anywhere else housed in its bet365 Originals stable.

There are some truly inspired themes here, with Zombie Pirates From Outer Space, Dr Elemento’s Polar Plot and Mariachi de los Muertos offering a window into the kind of games on offer.

Best UK Slots Sites in 2021 for Finding The Best Slot For You

Finding the right slot for you is about more than typing its name into a search box. But some UK slots sites don’t even have a search option to help you find what you’re looking for amid the hundreds of games on offer.

888casino simplifies the process with its search bar. It comes complete with checkboxes that allow the user to filter by certain categories.

This allows players to make searches for things like exclusives, slots with 25+ paylines, or slots by software houses like NetEnt or Microgaming. It’s an innovation we’d like to see more of as it allows you to find the slot that’s best for you.

Best UK Slots Sites in 2021 for Customer Service

Unibet comes out on top in this category. There are all kinds of reasons why players may need a little help from their online slots site from time to time. The most common issues can be solved with a quick look at their online help pages but sometimes that just won’t do.

In such circumstances, having someone to speak to is a must.  Unibet does just that and offers support to account holders 24/7. Unlike many of its rivals, this relates not just to live chat, but also to telephone support from real humans.

Best UK Slots Sites in 2021 for Slots Demo Play

32Red was top of this category. The reasons to seek out demo slots are plentiful. Players may use demo slots for fun or as a tool to improve their understanding of gameplay.

Yet pretty much all UK online slots sites have an oddly inconsistent offering when it comes to demo play options. They are either hard to find or just not enough of their titles support free play.

Step forward 32Red Slots. Their demo play option is clearly labelled for every single slot on the site, making it easy to enjoy slots demo play on many of their titles.

Best UK Slots Sites in 2021 for Jackpots

Paddy Power wins this category by holding a number of ongoing jackpots. Jackpot slots feeding into six progressive Jackpots on the site, including four Must Drop Jackpots that grow constantly.

Paddy Power Slots’ regular daily Jackpots include prizes that must drop before a certain time or win amount. But it doesn’t stop there. There are also slots that form part of the Jackpot King network which have surpassed £3 million.

Category Site
Best UK slots sites in 2021 for Exclusive Slots Bet365
Best UK slots sites in 2021 for Finding The Best Slot For You 888casino
Best UK slots sites in 2021 for Customer Service Unibet Slots
Best UK slots sites in 2021 for Slots Demo Play 32Red
Best UK slots sites in 2021 for Jackpots Paddy Power Slots
Best UK slots sites in 2021 for Game Information Betfair Slots
Best UK slots sites in 2021 for Offers for Existing Customers Betfred Slots
Best UK slots sites in 2021 for Slots Tournaments BGO Slots
Best UK slots sites in 2021 for Online/Bricks-And-Mortar Connectivity Grosvenor Slots
Best UK slots sites in 2021 for Number of slots BetVictor Slots

Best UK Slots Sites in 2021 for Game Information

Betfair Slots is brilliant for giving slots players all the information they need to know about every slot on the site. The information appears in simple terms and is easy to understand.

Click the ‘i’ next to every slot on Betfair and you’ll find an excellent introduction to how to play the game in question. Betfair also provides information such as the software house that made the slot, the RTP (return to player) % and the bonuses and features on offer.

Best UK Slots Sites in 2021 for Offers for Existing Customers

Betfred is a site that caters to its existing customers. Most UK slots sites have offers for existing players but the sheer variety and volume served on the Betfred Slots promotions tab makes this operator stand out. From daily free spins promotions to massive cash giveaways, all you need to do is opt-in and follow the instructions.

Best UK Slots Sites in 2021 for Slots Tournaments

Many providers now offer online slot tournaments, allowing players to compete against one another. Compete with other site members to win cash prizes or free spins. BGO Slots is the place to go if you’re a keen contestant of slots tournaments. The diversity of tournaments and the regularity with which they take place really stands out.

Best UK Slots Sites in 2021 for Online/Bricks-and-Mortar Connectivity

Many online slots sites in the UK offer some kind of tie-in with their physical shops or casinos but none do it as well as Grosvenor. Sign up to their Grosvenor One initiative in one of their more than 50 UK casinos and players can get a bonus for activating their account online.

Other benefits include having a single wallet to use in-casino and online. Members have the ability to deposit and withdraw from their online account in their physical casinos. There are also regular exclusive online offers and slots bonuses for Grosvenor One members.

Best UK Slots Sites in 2021 for Number of Slots

Some players want variety and we found that BetVictor is the place to be.  BetVictor Slots boasts an incredible four-figure selection of slots with more than 1000 titles available to account holders. If you play one slot a day that’ll keep you going for well over two years.

Best UK Slots Sites Bonuses and Sign-Up Offers

Read our rundown of the best slots deposit bonus offers, sign-up offers and welcome offers.