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The Best Slot Sites UK 2021

  • Written by David Bet
The Best Slot Sites UK 2021

When it comes to online betting, online slot machines are the most diverse option available and this is now the most popular form of online gambling in the UK. As such, there are literally hundreds of online slots sites on the market. However, some are much better than others. Here, we will look at all the best in the industry and how to enjoy the best slot games.


The Top Online Slot Sites 

Here are the best online slot casinos in the UK:

  • 5/5William Hill Casino - £20 Free Chips
    No deposit required
    Exclusive Offer. Invite only.
    18+. Play Safe. Invite only. New UK customers only. Opt in required. 1x per customer. Max £20 bonus on Casino only. 35x wagering requirement. Max redeemable amount £25. Bonus expires 72 hours from issue. Eligibility rules, game, location, currency and chip coverage restrictions, stake contributions and terms and conditions apply.
    The Bonus Drop: win up to £1000 100% Buy-In Bonus up to £300 Megaways Slots Quantum Roulette Quantum Blackjack£20Claim
  • 4.5/5Betfair Casino - 50 No Deposit Free Spins
    Promo Code: CASF51
    No wagering requirements, no capped winnings.
    New Customers Only using promo code CASF51. Free Spins on selected Betfair Casino Games. Free Spins valued at 10p. 18+ Full T&C's apply. BeGambleAware.org
    Play £10 Get 50 Extra Spins Private Table Bookings Super Fast Mobile Casino24/7 Customer ServiceGuaranteed Daily Jackpots50FSClaim
  • 4.5/5Paddy Power Casino - Get 100 free spins with no deposit needed
    Promo Code: PGCTV1
    No Wagering requirements!
    Offer available to new Paddy Power Games customers registered in the UK or Ireland only. If you have previously taken part in our 10 Free Spins on Daily Jackpot games promotion, as seen on TV, 30 Free Spins on Daily Jackpot games promotion, or our 60 Free Spins on Daily Jackpot games promotion, you are not eligible for this promotion. The Free Spins expire after 7 days. Only set games are eligible. There are no wagering requirements on Free Spins. What you win is yours to keep! Only deposits made using cards and PayPal apply. Full T Cs apply. Paddy Power promo code PGCTV1
    Daily Jackpot Slots Live Casino & Game Shows Megaways Slots Age of the Gods slots Paddy's Rewards Club100FSClaim
  • pokerstars4.5/5PokerStars Casino - 50 Free Spins on registration
    Winnings Paid as Cash!
    + Spend £10 Get 100 Extra Free Spins (promo code CASINO100)
    18+ Play Safe. New casino players only. Valid on 7 slots. 7 day expiry. Free Spins valid on 7 slots. Any winnings credited as cash. All spins must be used before cashout allowed. Terms apply. BeGambleAware.org
    $1,000,000 Casino Race Stars Reward Club Progressive Jackpot SlotsLive Casino RacesDaily Drop Jackpots50FSClaim
  •  
    5/5888Casino - £88 Free Casino Bonus
    No deposit required
    + Get 100% up to £100 bonus on your first deposit.
    New players only. No Deposit Offer: Claim in 48 hrs. 14 day expiry. FP wins are credited as bonus and capped at £10, exc. JP win. 50x wagering. Deposit Offer: £20 min deposit. Claim in 48 hrs. Valid for selected games. Bonus wins capped at £500, excl. JP wins. Pre-1st deposit only: Bonus wins & max redeemable amount capped at £100, excl. JP wins. 30x wagering – req. vary by game. Bonus expires in 90 days. Payment method & country restrictions apply. Withdrawal terms, No Deposit Offer terms & Deposit Bonus Offer terms apply. 18+. BeGambleAware
    Multiple Award-Winning Casino Exclusive Live Casino tables 1000+ Slot machines Wheel Of Fortune Daily Spins £750 Bonus Every Day On live Blackjack£88Claim
  • 4.5/5Coral Casino - Deposit £10 and Get £50 bonus
    Credited straight away
    18+. New customers only. Min spend £10 on qualifying games. Certain deposit types excluded. £50 Bonus on selected games subject to 40x wager req. Must accept within 7 days, valid for 30 days. Player restrictions and T&Cs apply.
    Age of the Gods slots Millionaire Jackpots Megaways slots Triple Star Jackpot rewards Exclusive Big Banker slot£50Claim
  • 4.5/5Ladbrokes Casino - Stake £10 get £50 bonus
    No deposit free spins every day with Instant Spins & Wheel Of Fortune
    18+. New Casino players only. Deposit required. Bet £10+ on qualifying games. 40x wager reqs (bonus only) on selected games. Accept Bonus within 14 days. Bonus valid for 30 days. Certain deposit types excluded. Player restrictions and T&Cs apply.
    Daily free spins with Instant SpinsGame shows (eg. Deal or No Deal Live)Daily Jackpots£2 Million Giveaway Megaways slots£50Claim
  • 4/5Bet365 Casino - New Player Bonus up to £25
    Promo Code: BS100
    Get off to a flying start with an exclusive casino offer!
    Up to £25 New Player Bonus. New Casino customers only. Deposit min. £10. Max. bonus £25. 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.
    Win or Spin Promo VIP Program  Tuesday Trivia Bonuses Game Show from Evolution Live Age of the Gods slots£25Claim
  • 4.5/5MrGreen Casino - 25 No Deposit Free Spins
    to play on Narcos Slot
    + 100% Bonus & 200 Extra Free Spins
    18+ New players only. 35x wagering applies to Bonus Cash and Bonus Spins. Deposit of £20+ unlock 100% Match Bonus up to £100 in Bonus Cash, subsequent wager of £20+ unlocks 100 Starburst Bonus Spins and 100 additional Bonus Spins (20 per day for 5 days). T&Cs apply. BeGambleAware.org.
    Lagest collection of casino games Multiple awards winner casino Blackjack Cash challengesMonopoly Live races €2,500,000 Daily Drop Wins25FSClaim
  • 4/5Netbet Casino - up to 100 Free Spins on Starburst XXXtreme (No Deposit)
    Use bonus code: WHEEL
    + 500 Free Spins on your first deposit!
    New UK certified players | Valid mobile number required | No minimum deposit | 1 to 100 Starburst XXXtreme Free Spins randomly allocated | 40 times wagering on winnings | Ends 30.09.21 | T&Cs apply
    Over 1000 Casino GamesLive Blackjack & Live Roulette Age Of The Gods & Kingdoms Rise slots Powerplay Jackpot slotsEarn Rewards with Players Club100FSClaim
  • 4/5Casushi Casino - 100% Up To £50 Welcome Bonus
    + 50 Extra Spins on Book Of Dead
    18+. New players only. 100% bonus on first deposit up to £50 & 50 Bonus Spins (30 spins on day 1, 10 on day 2, 10 on day 3) for Rich Wilde and the Book of Dead slot only. Min first deposit of £20. Max bonus £50. Max bonus bet £5. Max bonus cash-out £250. 40x wagering requirements. Bonus expiry 30 days. Bonus spins expiry 2 days. Game restrictions apply
    Sushi Train: Exchange Your Casuhi Points For Bonus Spins Table Games (Roulette, Baccarat, Blackjack & many more) Games Shows By Evolution Gaming (eg. Crazy Time) Daily Drop Jackpot SlotsMegaways Slots£50Claim
  • 3.5/5mFortune Casino - £10 FREE Welcome Bonus
    No Deposit Needed
    + 200% 1st Deposit Match & 200 Extra Spins
    18+. New players only. Welcome Bonus has a 7 day expiry. Up to 10 (20p) free spins (FS) on Super Win 7s for 10 days. Win paid as bonus credit (BC). Withdrawal of deposit excludes player. Min deposit £10. Expires 00:00 daily. Up to 200% deposit match of first deposit awarded as bonus credit. Max £100 awarded as bonus credit. Min deposit £10. 20x wagering requirement. Max withdrawal from bonus and FS win £50. Expires 7 days after registration. T&Cs apply. BeGambleAware.org
    Pay-by-Phone CasinoExclusive Slots & Games Refer A Friend BonusWheel Of Fortune Bonus Loyalty Shop & Vip Club£10NDClaim
  • 4/5BetVictor Casino - Wager £10 Get £50 in Bonuses
    + 50 Free Spins
    18+ new customers only. Opt in, deposit and wager £10 on selected games within 7 days of opening new account. Get 1 x £20, 3 x £10 bonuses for selected games with up to 40x wagering & 7 days expiry. Max redeemable from bonuses £1,250. 50 Free Spins are on Gonzo’s Quest, have no wagering and expire in 7 days. T&Cs Apply, see below. begambleaware.org | Please Gamble Responsibly.
    Play the new Aviator game Daily Jackpot Megaways slotsAll the Evolution Game ShowsFirst Person Blackjack & Roulette More than 60 tables of Live Casino games£50Claim
  • 3.5/5 Casino Cruise - 55 No Deposit Free Spins
    on the popular slot Starburst
    + 100% up to £100 & 100 Extra Free Spins
    18+ New players only. 35x wagering applies to Bonus Cash and Bonus Spins. Deposit of £20+ unlock 100% Match Bonus up to £100 in Bonus Cash, subsequent wager of £20+ unlocks 100 Starburst Bonus Spins and 100 additional Bonus Spins (20 per day for 5 days). T&Cs apply. BeGambleAware.org.
    Drops & Wins:
    weekly tournaments
    & prize drops
    Live Casino:
    100% up to £100 Bonus
    10% up to £200 Back
    Cash PointsEvolution Game Show
    55FSClaim
  • 3.5/5Leovegas Casino - 10 Free Spins On Sign Up
    to play Book of Dead slot for free
    + 100% Bonus & 200 Extra Free Spins
    Full T&Cs apply. No deposit required & new players only. Claim from “My Offers” within 3 days of registration & 3 day expiry. 10 free spins worth £0.10 each on Book of Dead, winnings paid as cash. 18+ BeGambleAware.org.
    Game Shows by Evolution Ready To Drop Jackpot Slots Live Speed Baccarat New Game Mode - Blast! Over £6M jackpots with our Mini, Minor, Major and Mega Jackpot10FSClaim
  • 3.5/5Parimatch Casino - Wager £10 Get £70 in Bonuses
    £20 on Slots + £20 on Live Casino Game Show + £10 on Live Blackjack + £10 on Live Roulette + £10 on Jackpot.
    18+ New customers. Opt in. Wager £10 on selected games in 7 days of sign up. £70 bonus = 2 x £20 and 3 x £10 bonuses for selected games, up to 40x wagering, 7 days expiry. Max redeemable £1,750. Card Payments only. Additional terms for existing BetVictor customers apply. T&Cs Apply, see below | begambleaware.org | Please gamble responsibly.
    Play the new casino Game 'Aviator' Drop & Wins slots Mega Moolah & Rainbow Riches Daily Jackpot slots Game Shows by Evolution Gaming£70Claim
  • 3.5/5 SpinIt Casino - 21 Free Spins on sign-up
    to play Book of Dead slot machine
    + 100% up to £100 & 200 Extra Spins on Starburst
    18+ Full T&C’s Apply. New UK players Only. 21 Free Spins upon registration. £10 min deposit. £5 max bet using bonus. 40 x wagering applies. Bonus valid for 14 days. 20 Spins on pre-selected games will be credited per day for 9 days after qualifying deposit/wager is met. Free Spins valid for 72 hours from credit. Max Free Spins winnings £100. E-Wallets excluded. Always refer to Bonus Terms - www.begambleaware.org
    Drops & Wins:
    weekly & daily prizes
    Live Casino:
    100% up to £100 Bonus
    Mistery Mania: 3 spin-worthy surprise bonusesThe Spinner's Choice: Free Spins & Reload bonuses on Game of the Week
    21FSClaim
  • 3.5/5Mr.Play Casino - 100 Free Spins + £200 Bonus
    Welcome package includes 3 deposit bonuses
    New Customers Only 18+. T&C's Apply | begambleaware.org. Min deposit £10. Welcome package splits over 3 deposits. 35x wagering requirement applies to match up bonus. Offer valid for 1 week. 100 spins split to 20 spins a day for 5 days. 50x wagering applies to spins.
    Tons of games from top providersLong-term bonuses & loyalty programsGreat payment options with low limits Both Malta and UK licensed£200Claim
  • 3.5/5QueenPlay Casino - Up to £200 Bonus & 100 Spins
    Monthly promotions giving you even higher chances at winning.
    Welcome Package up to £200 Bonus & 100 Spins
    New players only. 18+. Min deposit £10. Wagering requirement apply 35x. Offer valid for 72hr. 100 spins includes 3 deposit..
    400+ slots by Microgaming, NetEnt & othersMobile-friendly casinoLive game shows (Monopoly Live, Dream Catcher, etc..)Responsive customer support £200Claim
  • 4/5777Casino - 77 Free Spins No Deposit Needed
    + up to £200 Free Play on Your First Deposit
    New players only • No Deposit Offer: Claim in 48 hrs • 14 day expiry • Free Spins (FS) wins credited as bonus & capped at £10, excl. JP win • Deposit Bonus Offer: FreePlay (FP) wins credited as bonus & capped at amount received, exc. JP win • Valid for selected games • Bonus wins capped at £500, excl. JP wins • Pre-1st deposit only: Bonus wins & max redeemable amount capped at £100, excl. JP wins • 50x wagering - req. vary by game • Bonus expires in 90 days • Payment method & country restrictions apply • Withdrawal restrictions & T&Cs apply.
    Double your winnings at 777 Live Casino BlackjackUp to £77 Bonus every time the roulette hits 7 Earn comp points & redeem them for CASHPowered by 888casino Exclusive Slots & Casino Games77FSClaim
  • 3/5Yeti Casino - 23 Completely Free Spins
    + 100% refund bonus up to $/£/€111 + 77 Extra Spins
    #AD New customers only, 18+, min deposit £10, wagering 60x for refund bonus, max bet £5 with bonus funds. Free Spins bonus has x40 wagering. 23 free spins on registration (max withdrawal is £100). 100% refund bonus up to £111 + 77 spins on 1st deposit. No max cash out on deposit offers. Eligibility is restricted for suspected abuse. Welcome bonus excluded for players depositing with Ecopayz, Skrill or Neteller. Full T&C’s apply.Gamble responsibly, BeGambleAware
    100% safe and reliable online casino Unlimited Cashback on your deposits App available in both App Store and Google Play Slots Tournaments24/7 Customer Support23FSClaim
  • 3.5/5All British Casino - 20 Free Spins Upon Registration
    on Starburst (no deposit)
    + 100% up to £100 + 10% cash back
    18+. New customers only. $/€5 no deposit bonus for mobile verified customers only. Minimum deposit $/€10. Maximum bonus $/€50. Wagering requirements on winnings from bonus x15. Full T&Cs apply.
    + Always 10% Cashback Daily Tournaments & Challenges Over £25M in Progressive Jackpots Slingo & Video Poker Lottery & Table Games20FSClaim

Every one of the online slots sites on our list has been licensed and regulated by the UK Gambling Commission, which means that they are completely safe and legal to play at. However, there are a number of other factors we take into account, including the quality and the quantity of the slot games available, the amount of jackpot and progressive jackpots, the amount of mobile friendly slots as well as the best bonuses and promotions available for new players looking to sign up, and existing customers looking for value.

The Best Slot Sites Available in the United Kingdom

Because of the sheer number of sites out there offering quality online slots, competition is strong. So, in order to stand out from the others, online slot sites try to offer players something that other sites don't offer. Many try to get a player through the casino door by offering a hefty and generous welcome bonus with extra spins on top. Some offer players a 100% welcome bonus amount, some have a large number of free spins to try the site for free, and others offer free spins with no wagering requirement attached, so you get whatever you win. This means that because there are so many online slot sites, the only winner is the player. Slot players in the UK are now completely spoiled for choice. They can pick their new site based on the bonus offer, or it could be on other factors like progressive jackpot slots, generous terms and conditions, low wagering requirements, high return to player rates, quality of tournaments, free spins on offer or the variety of new titles and exclusive slots. You can choose your slot site based on what you are looking for.

Because of the competition, any player signing up is precious, so the best slot sites will not only offer new customers a generous welcome bonus amount when they make their first deposit. Most also offer a VIP or loyalty program to help keep the players once they have signed up. Generally, players can gain loyalty points by playing on slot games. The more you spin, the more you can win. Moreover, unlike other casino games, slot games normally contribute 100% to wagering requirements. Any slot player that knows what they are doing, understands that they can take advantage of the generosity of slot sites and will sign up with a number of top UK slot sites so that they can benefit from the strengths of a number of different sites.

The Top 5

Here are our top 5 slot sites in a little more depth:

William Hill Casino - £20 No Deposit Bonus Welcome Bonus

Not only is it one of the most well-renowned gambling sites in the UK, it offers an excellent variety on all gambling verticals. Players can enjoy not just excellent sports betting but it also has an excellent casino with a huge range of slot games. Players can enjoy top end Playtech slots and must drop jackpot slots, as well as over 50 progressive slots. It also offers its players no deposit free spins and an excellent £20 no deposit welcome bonus without having to make a first deposit!

William Hill Casino No Deposit Bonus 

Terms and Conditions

18+ New players only. UK Customers only. Opt in required. 1x per customer. Max Bonus £20 game bonus on Casino only and separate to cash funds. 35x wagering requirements. Max redeemable amount £25. Bonus must be used within 72 hours from issue. Eligibility rules, casino game, location, currency and chip coverage restrictions, stake contributions and terms and conditions apply. Withdrawal restrictions may apply. Please gamble responsibly. Full T& Cs apply.

Betfair Casino - 50 No Deposit Spins No Wagering Requirements Welcome Bonus

Betfair is known for being an excellent sports betting exchange. However, it also offers players an fantastic casino with a huge variety of slot games. The site constantly adds new slots every week and it gives players guaranteed daily jackpots. Betfair has a very fast and reliable mobile app, allowing players to enjoy the games on the move. What's more, for new players, Betfair casino is offering 50 no deposit free spins on Must Drop Jackpots with no wagering requirements. This is one of a few no deposit bonus welcome offers available.

betfair no deposit free spins

Bonus Terms and Conditions

T&Cs for Free Spins. 18+ New Players Only. Winnings from free spins paid as cash. No min deposit. Free spins must be used within 7 days after acceptance. No wagering requirements. New Casino players from UK & Ireland only. SMS verification required. T&Cs apply. Please gamble responsibly.


Paddy Power Slot Site - 100 No Deposit Free Spins Welcome Bonus

Paddy Power is synonymous with excellent gambling experiences, and this is reflected in Paddy Power's huge slot selection, which makes it one of the best online casino sites and slot sites in the industry. It has hundreds of top slots from industry leading providers, including Rainbow Riches, Book of Dead, Starburst and the app is excellent on mobile - Android and iOS. However, one thing that really stands out is the welcome bonus funds that players can expect on sign up. Currently, new Paddy Power players can enjoy 100 no deposit free spins on daily jackpot slots with no wagering requirements as well as free spins available on tournaments.


Paddy Power No Deposit Free Spins

T&Cs

18+ New Players only. Winnings from free spins paid as cash. Bonus funds are separate from cash funds. Free spins expire 7 days after acceptance. New Casino players from UK & Ireland only. Only one bonus offer per player. SMS verification required. Full T&C's apply. Please gamble responsibly.

Casino Slot Sites with Highest Slot Payouts

The reason players enjoy slot games so much is because it's one of the most fun and entertaining games that allows players to win real money. That's the ultimate goal of any slot player. They may be fun, the slots may look good and have lots of cool and innovative features, but the best UK slot sites understand that a player's main aim is to win real money - and big money. As many are aware, slots are based on a Random Number Generator and are based on luck. However, players can increase their chances of winning. This means a player picking the slot games with the highest RTP (return to player) rate. The higher the RTP of the slot, the more chance you have of money being returned to you. So, when choosing a game, the best online slot games will have an RTP of 96% or higher. Here are the best online slot sites with a high average RTP:

Top Slot Sites for RTP

When it comes to the best slot sites for RTPs, taking into account all of the games on the site, there are two that really stand out, both offering players an average RTP of over 96%.


BGO - Average RTP 97.71%

BGO is one of the well known slot sites offering players slot games from all of the biggest game providers out there, including NetEnt, Big Time Gaming, Microgaming and more. It has popular slot games including Starburst, Finn and the Swirly Spin, Book of Dead, Rainbow Riches and more. However, it's the huge average RTP of 97.71 that makes it one of the best slot sites out there. It's current welcome casino bonus amount is up to a whopping 500 free spins worth 50p each when making a min deposit of £10 or more.

bgo no deposit wager free spins

T&Cs

Full T&Cs apply. 18+. *UK only. Win up to 500 spins from Mega Wheel on 1st deposit. Must be used within 24-hours. Max bet £2.50, Max Spins win £8 per 10 spins, Max Bonus win £150, bonus funds are separate to cash funds. selected games only & 65x wagering requirement on winnings. New players only. Min deposit £10. Payment method exclusions apply. No Neteller/Skrill. Full t& c's apply.

Casumo - Average RTP 96.50%

Casumo is well known as one of the most fun and innovative slot sites in the UK. It has some of the best slot games such as Book of Dead, Blood Suckers, Jack Hammer 2 and Dazzle Me, from providers such as NetEnt, Big Time Gaming, Microgaming and more. One of its biggest selling points is the RTP of the site, which is a very generous 96.50% and that makes it stand out from other top slot sites. The current offer is a £100 welcome bonus plus 200 extra spins on first deposit. It also offers players 30 free spins on Book of Dead upon registration with NO wagering requirements. Terms and Conditions apply.

T&Cs

Full T&Cs apply. 18+. New UK customers only. Opt-in required. 30 free spins on Book of Dead game upon registration with NO wagering requirements or deposit required for spins AND 100% deposit bonus up to £300: Min deposit £10 and 30x wagering requirements apply on bonus (game weighting applies). Max bet applies. Please gamble responsibly, www.begambleaware.org. Full T& Cs apply.


Top 3 RTP Slots

Here are the best online slots UK for Return To Player Rate:
  1. Goblin's Cave - RTP of 99.32%:Goblin's Cave is a Playtech game which takes players on a treasure hunt in search of real money wins. This is a 3-payline game with a hold feature. However, it is the multi-spins gameplay and ability to hold symbols that make the game an excellent mix of luck and skill - and makes it one of the highest RTP online slots.
  2. Ugga Bugga - RTP of 99.07%:This is another Playtech slot game that has an excellent RTP rate. The game is made up of 10 single 3 reel slots that have one payline each. You can then choose which symbols you want to lock in and hold. Again, this adds an element of skill and takes the RTP up to over 99%.
  3. Mega Joker - RTP of 99.00%:This time it's a NetEnt game that takes third place. Mega Joker is one of NetEnt's classic online slots which offers players an excellent retro style slot machine gameplay with fruit symbols and, of course, the mystery joker real money wins. It also features the Supermeter mode that offers players boosted payouts. Additionally, it is also one of the best progressive jackpot online slots available.

The Other Slot Games with High RTPs

  1. Jackpot 6000 - Average RTP of 98.90%
  2. Blood Suckers - Average RTP of 98.00%
  3. Starmania - Average RTP of 97.8%
  4. Kings of Chicago - Average RTP of 97.8%
  5. Devil's Delight - Average RTP of 97.60%
  6. Couch Potato - Average RTP of 97.43%
  7. Alchemist's Lab - Average RTP of 97.32%

However, when it comes to slot sites RTP and slot games RTPs, it is important to remember that this is not set in stone and these numbers are theoretical. There are also a number of other things that could affect the game payout. This could include the slot site having a maximum betting limit, bets per spins and bets per line. Additionally, slot game features such as free spins, wilds, extra spins, bonus rounds, and multipliers can also have a huge impact on the slot game's maximum win. So, not only should you look at the game or slot site's RTP, but you should look at all other factors that could affect your winning potential.

There are slot sites always making inroads into the list and are increasing their payouts as time progresses, so it's always a good idea to check these out regularly as these can change from time to time.

Online Slot Sites With No Wagering Requirements

The very best slot sites are those that offer new players a welcome bonus or free spins and extra spins with no wagering requirements attached, although these online slot sites are very few and far between. So, they are well worth taking advantage of when you find them. Generally, you will find that these welcome bonus offers will be free spins rather than a specific deposit bonus amount. However, the number of free spins you get with no wagering requirements can vary greatly, from 10 free spins to 50 free spins or more. This depends on the slot site and can also depend on how much your first deposit is. Remember to check the bonus offer terms and conditions and validity as some may have other tough terms attached, including short expiry dates.

Often, the slot site in question will make these no wagering free spins available for set games only - very occasionally will players be able to use these free spins on the game of their choice. Remember, different slot sites have different terms attached.

No Wagering Free Spins

The Best Slot Site for No Wagering Free Spins

Although there are a number of slot sites that offer no wagering free spins on sign up, such as Paddy Power, the one slot site that really stands out in this regard is PlayOJO as all of its free spins and extra spins bonuses come with no wagering requirements as standard.

PlayOJO - Welcome Bonus 50 Spins No Wagering Requirements

PlayOJO has a USP that sets it apart from all other online slot sites out there. It isn't a huge bonus amount, or hundreds of extra spins, it is the value of its offer - 50 free spins on sign up with no wagering. This isn't just it though. Every free spins and extra spins bonus offers all come with no wagering requirements, which is what makes it stand out. This slot site also has hundreds of excellent slot games and jackpot games, it offers its players unique loyalty rewards and has cashback offers on all games.

Terms and Conditions:Full T&Cs apply. 18+. First deposit only. 50 Free Spins on the Book of Dead slot. New players only. Min deposit £10. Excl. new players in N.I. Each Free Spin valued at 10p. No wagering requirements. OJO’s Rewards and Game Play policy applies. Must be used within set time period.

Best Slot Sites with Low Wagering Requirements

No all slot sites can offer no wagering requirement - and, indeed, not many do. Slot sites put wagering requirements into place because they need to control how much they pay out in bonus funds and bonus winnings. Slot sites can't simply give away cash. As such, even the best online slot sites attach wagering requirements to bonus funds and free spins. However, what we do expect from a good slot site is reasonable, preferably low wagering requirements.

If you are looking to enjoy playing slot sites, then you want to know that you have enough money in your account to play your favourite slot games. This can be aided by generous welcome bonuses and bonus offers. But these have to be worth your while or they can cost you more than you make. Before a player signs up for an online slot site and claims the offer it is vital to read the terms and conditions attached, especially the wagering requirements. Here are the best online slot sites for low wagering requirements attached to the bonus offer.

BetZest - £5 Completely Free Welcome Bonus

BetZest may not offer a huge amount in bonus funds, but the £5 that it does offer new players is completely free, which means there is no min deposit. Not only is it a no deposit welcome bonus but this is one of the slot sites with the lowest wagering requirements, set at just 15-times wagering.

Terms and Conditions: New customers offer. Geo Restrictions apply. 15x wagering requirements. Mobile verification required. Max Bous £5. Full Terms apply; 18+.


William Hill - No Deposit 50 Free Spins Offer

William Hill is well renowned for excellent offers and bonus amounts. One of William Hill's new player offer is No Deposit 50 bonus spins. Not only is this a no deposit offer, but with just 20-times wagering requirements, this is one of the lowest slot sites out there in regards to wagering requirement terms.


William Hill Casino Free Spins No Deposit

Terms and Conditions: New customers only. Opt in required. 1x per customer. Max 50 free spins with 20x wagering. Stake £10 stake & get 100 free spins on completion with 20x wagering. Selected slots only. Free spins expire 24 hours after issue. Eligibility rules, game, location, payment method and currency restrictions and terms and conditions apply


Mayfair Casino Slot Site - Up to 50 Free Spins

Mayfair Casino stands out from other slot sites because of the quality of its welcome offer for new players. New customers making their first deposit can enjoy up to 50 free spins on selected slot games with a min deposit of £10. There is an alternative welcome offer of up to £200 cashback with a min deposit of £50 - with a max bonus for the cashback offer £200. Compared to other slot sites, the terms are very fair, with just 20-times wagering requirements.

Terms and Conditions:T&C -New Customers Only. First Deposit only. Minimum Deposit Balance £10 for Spins. Minimum 10 and Maximum 50 bonus spins on selected slots only. 2x Conversion, 20x wagering. Max Free Sins winnings may apply. Min Deposit £50 for 10% cashback on 1st deposit based on slot net losses for 24 hours. Max Offer Cashback £200. Elk Gaming Slots excluded. T&Cs Apply.

Most of the slot sites that offer low wagering requirements for their welcome offer also come with low minimum first deposit amounts, which makes the offer perfect for a player looking to play the small stakes. This is really important to look at, as it is not unusual now to see huge welcome bonus offers - up to £500 at times, but coming with wagering requirements that can go up to 65-times to bonus amount. This means that if you take a 100% welcome offer up to £500, you need to deposit £500 to claim the full bonus. If your bonus funds come with a 65-times wagering requirement, then in order to withdraw the bonus and winnings, you will need to stake £32,500 in the set time limit. This is a huge amount of betting. However, some even stipulate 65-times bonus + deposit, which would double that amount to £65,000! We would recommend that you favour bonuses with wagering requirements of 40-times or less. However, the lower the better.

Best Online Slot Sites For Tournaments

One of the most exciting things for dedicated slot players is the opportunity to enjoy slots tournaments. The very best online slots sites will offer players gameplay involving cash drops, missions and tournaments. Tournaments are very simple and they really encourage players to keep playing on the slot site. A player simply needs to play on a specific slot game but instead of accumulating real money, they will build up points. Tournaments can vary from slot site to slot site, but the general rule is that players are competing against each other, trying to win the most points before the slots tournament comes to an end. However, generally, free spins winnings will not count on the leaderboard.

Generally, the best online casino and online slots sites will not charge a player to enter the tournament, but on occasions, a slot site will ask for an entry fee. In this case, a player would normally then get free credits to play on the slot game. Not all online casino sites offer slot tournaments, but here are some that do.

Unibet - Deposit £10 Get a £40 Casino Bonus

One of the best online slot sites for tournaments is Unibet, which offers players a number of tournaments with real money, cash prizes, tech prizes and even holidays for the winners. Examples of this include Unibet's £100,000 February Frenzy. In order to take advantage of the tournaments available, players need to sign up for the site. On registration, the new player offer is deposit £10 get a £40 casino bonus.

Terms and Conditions: 18+ begambleaware.org. New customers only. Min deposit £10. Money back as casino bonus. Bonus must be used within 30 days. Wagering requirements apply. Further T&Cs apply.

Most of the online slot sites also offer smaller prizes to players as the slots tournaments progresses, this could be additional bonus funds to play on the games, free spins and extra spins - and then a huge prize pool with a big lump sum for the slots tournament winner. Often the online slot site will have a set prize pool. However, sometimes it might work the same as jackpot slots where it grows depending on the number of online slot players that join in and start playing. As is the case with all online slots, where you end up on the leaderboard is often about luck. However, there are ways to increase your chance of winning the online slots. It's better to make the maximum bet, get the spins going as quickly as possible and try to get on the slot games free spins and bonus features.

New Online Slot Sites UK

There are a number of advantages when it comes to signing up with newer online slot sites. Because of the growing popularity of online gambling and online slots, there are more online slot sites and online casino sites in the UK than ever before. This means that players can sign up to new online slot sites as they crop up and take advantage of more bonus funds, a better bonus offer, more first deposit offers and simply take advantage of more than one bonus amount. They can then use these games bonus offers and free spins offers to play on the most popular slot games.

In recent years, we have seen a huge number of new online casino sites and slot sites, which gives players more options of slot games and more chances of finding offers with min deposit and wagering requirements that work for them. Offering players something new means that these new online slot sites have a better opportunity of getting a decent market share and staying afloat in a very crowded industry. Now, most new online slot sites offer slots from the best software developers. Check out our page on the best new UK slot sites.

The Best Online Slots Games for UK Players

Once you have found the online slot site of your choice, it's time to find out where to spend your bonus funds and games bonus. This means looking for the best slot games out there. There are a huge variety of slot games, video slots, classic slot games, progressive jackpot games that are designed and developed by world class slot games developers. Here are the best online slot games in the UK right now:

Starburst - NetEnt

Starburst is one of the biggest games in online slot site history, created by Swedish iGaming giant, NetEnt. This is often the game that players can use their free spins on and it offers a host of features and wilds for the ultimate slot game experience. The game also has a very creditable RTP of 96.10%

Book of Dead - Play 'n Go

This slot game, created by Play'n Go, takes players on a trip through Egypt, where players can start hitting those spins for untold treasures. The reason this is one of the most popular slot games in the UK is not only for the effect and storytelling, but it also has a very decent RTP of 96.00%.

Mega Moolah - Microgaming

Mega Moolah is popular with slot players because every single one of your spins gives you the chance to win millions. This is a record breaking progressive slot that is one of the biggest millionaire makers in the online slots industry. The RTP may only be 88.12% - lower than many others, but the chance of life changing spins makes it even more appealing.


The Rest of the Best:

  • Golden Goddess - IGT - 95.13% RTP
  • Green Lantern -Playtech - 94.95% RTP
  • Monty Python's Life of Brian -Ash Gaming - 94.00% RTP
  • Merlin's Magic Respins - NextGen - 95.32% RTP
  • Foxin Wins - NextGen - 95.62% RTP
  • Immortal Romance - Microgaming - 96.86% RTP
  • Gonzo's Quest - NetEnt - 96.00% RTP
  • Cleopatra - IGT - 95.13% RTP
  • Dead or Alive 2 - NetEnt - 96.82% RTP
  • Thunderstruck - Microgaming - 96.10% RTP

Online Slot Sites FAQs

Hopefully, you have found all the information you need to know about online slot sites and have chosen the perfect online slot site to suit your needs. However, if there are still any doubts, here are some of the most frequently asked questions:

Which is the Best Online Slot Site?

This very much depends on what you are looking for when signing up to an online slot site. Each online slot sites comes with pros and cons. However, in the list above, we have provided you with a list of what we believe to be the best online slot sites. Each of these have been licensed and registered by the UK Gambling Commission, each of them have excellent mobile compatibility and offer players a variety of banking methods. We also look at the welcome bonus on offer. Taking all of these factors into consideration, we have compiled our list of top online slot sites.

Do All Online Slot Sites Offer New Players Bonus Funds?

Because the industry is so crowded, all slot sites will offer new players a welcome bonus. This welcome offer may come in the form of a set amount of bonus funds or could be free spins or bonus funds. It could also be a mixture of the two - a first deposit bonus amount with extra spins thrown in on top.

However, it's important for new players to check the bonus terms and conditions carefully. Generally, there is a min deposit £10 or more, one bonus offer per player, wagering requirements, max bonus bet, expiry date and payment method exclusions.

Are All The Best Online Slot Sites Safe and Licensed?

Every single one of the top online slot sites that we have on our list of best online slot sites has been licensed and regulated by the UK Gambling Commission as well as other regulatory bodies such as the MGA. In addition, all of the sites have top end SSL security certificates and are constantly tested and audited by third parties to ensure fairness.

Can I Play Online Slot Games for Free?

Pretty much all online slot games are available to play for free, without having to spend any of your own real funds. Often, top UK casino slot sites will offer players free spins and bonus spins when they sign up for a new players account. Some of these are also no deposit free spins, which means you don't have to deposit any of your own money. Also, many top slot games are available in free play mode so you can try the game out before you risk your own cash.

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