Which online casinos have the best payouts? Here we list the UK casinos and slot sites which have the best Return To Player on slot games. You can read more below the listings about Return To Player and how jackpot size, promotions and other factors also affect how much slot sites pay out.
Sue Dawson has been writing about (and playing) online bingo and slots since 2013, putting her unique spin on everything. She has…
Sue Dawson has been writing about (and playing) online bingo and slots since 2013, putting her unique spin on everything. She has written pieces for iGaming industry news sites, appeared on panels at industry events and on podcasts, helped to judge industry awards and is a member of iGB Executive, an industry think tank. In her spare time she enjoys gaming, hiking, dancing, watching motorsport and reading science fiction.
Play Free Slots Tournaments with Real Cash Prizes - No Deposit Required
Bonus details
Minimum Deposit
No deposit needed to enter some of their tournaments
Site details
Uk License
Digital Division Ltd, 58086
Payment Methods
Is it any good?
Slots Temple is an unusual independent casino whose USP is daily, weekly and monthly slot tournaments with cash prizes, alongside a games library of more than 1200 slot games you can play with real money. They guarantee to have the highest available level of Return To Player on all of their real money slot games.
Deposit & Play £20+, Get 200% Slot Bonus up to £300 + 100 Bonus Spins + 40 Bingo Tickets
Bonus details
Minimum Deposit
£20
Wagering
40x bonus. No wagering on winnings from free bingo tickets and free spins
Expiry
30 days
Other Key Info
Max conversion 7x deposit (unless you win a jackpot)
Site details
Uk License
Happytiger ApS, 57641
Bingo Software
Own Bingo Software
Payment Methods
Products
Bingo
Slots
Is it any good?
Happy Tiger is a bingo and slots site on a standalone platform with unique games that have been designed to maximise entertainment value! They also all have a very decent Return To Player.
New customers only | Minimum deposit £20 | Bonus = 2 x deposit | Maximum bonus = £300 | 40x wagering applies to bonus funds before winnings can be withdrawn | Bonus/winnings lost if initial deposit is withdrawn within 30 days | 10 Bingo tickets and 25 Bonus Spins on Diamond Express issued 4 days in a row when logging in each day once £10 deposit has been wagered | Bingo tickets and Bonus Spins must be wagered 1x before winnings can be withdrawn | Winnings from bonus play capped at 7x deposit (except jackpot winnings) *18+ GambleAware.org Please play responsibly #ad Full T&C's Apply
Deposit £10+, Get 100% Slot/Casino Bonus (up to £100)
Bonus details
Minimum Deposit
£10
Wagering
30x bonus
Expiry
30 days
Other Key Info
No Neteller, Paypal or Skrill. For selected games only.
Site details
Uk License
Blue Star Planet Limited, 43173
Payment Methods
Is it any good?
10bet is a well respected sportsbook and casino that has been around for nearly 10 years. Our exclusive welcome offer can be used on a great range of slot and live casino games!
Return To Player on slots is near the top of the range
Cons
Bonus can only be used on a selection of 12 slots and 12 live casino games
New bettors registered from [https://www.bestnewbingosites.co.uk/]; Use code 10CASINO; Wager bonus 30x to release bonus winnings; Valid 30 days; Stake contribution, games and payment method exclusions apply; T&C apply; 18+ *18+ GambleAware.org Please play responsibly #ad
Deposit £10+ Get 150% Slot Bonus up to £150 + 25 Super Spins
Bonus details
Minimum Deposit
£10
Wagering
50x
Expiry
30 days
Other Key Info
Debit card or instant bank transfer deposits only
Site details
Uk License
Platinum Gaming Limited, 45322
Payment Methods
Products
Slots
Casino
Live Casino
Is it any good?
32Red is one of the oldest igaming sites around, with the best part of 20 years of repeat award winning customer service under its belt. For many years it was Microgaming only (and still has one of the fullest ranges of Microgaming slots you'll find anywhere) but now it also has Starburst, Rainbow Riches, Bonanza and many other non Microgaming titles.
Casino and sportsbook combo with a long history and great reputation
Games from around 120 different studios
Cons
Restrictions on payment methods
Invitation only. New accounts only. Min Deposit £10, 50x Wagering. Claim offer within 7 days, bonus expires after 30 days, debit card or instant bank payment only. Game contributions vary, max. stake applies. 18+. Full terms apply. *18+ GambleAware.org Please play responsibly #ad
Min. £10 in lifetime deposits required. Offer must be claimed within 30 days of registering a bet365 account. Select prizes of 5, 10 or 20 Free Spins; 10 selections available within 20 days, 24 hours between each selection. Max. prize, game restrictions, time limits and T&Cs apply. *18+ GambleAware.org Please play responsibly #ad
Betfred Games has a great new welcome offer - but do note that you won't be eligible if you've previously claimed a welcome offer anywhere else on the Betfred site.
New customers only. Register and enter promo code SPINS prior to deposit. Deposit, using a Debit Card, and stake £10+ within 14 days on Slots at Betfred Games and/or Vegas to get 200 Free Spins on selected titles. £0.10 per spin. Credited within 48 hours and valid for 7 days. Full T&Cs apply. *18+ GambleAware.org Please play responsibly #ad
Deposit & Play £5+, Get 50 Free Spins (Big Bass Bonanza)
Bonus details
Minimum Deposit
£5
Wagering
No wagering on winnings
Expiry
7 days
Other Key Info
Play the £5 on any Big Bass game to qualify
Site details
Uk License
Planet Bet Limited, 65109
Bingo Software
Pragmatic Play Bingo
Payment Methods
Products
Slots
Casino
Live Casino
Sportsbook
Bingo
Is it any good?
PlanetSport Bet is an independent UK sportbook and casino with a new no wagering spins welcome offer. It's one of only a few UK facing sites to have live casino games by Ezugi as well as the ever popular Evolution and Pragmatic Play, and has now added some bingo rooms as well.
Independent UK casino and sportbook which also has bingo
Backed by a well known sports website
Extremely popular welcome offer
Cons
No progressive jackpot slots
Debit cards only for deposits
New Casino customers only. 18+, UK & Ireland only. Deposit & bet £5+ cash on any Big Bass game get 50 x 10p free spins. To qualify, customers must use the promo code spins50 . *18+ GambleAware.org Please play responsibly #ad
Fun site which incorporates many elements of social casinos
No wagering on spins offers
Cons
Some deposit methods are excluded from promotions
£1 fee to withdraw
Full T&C's apply. New successfully registered customers only. One offer per customer of Small Screen Casino Ltd. Deposit 20.00 get 50 x 0.10 stake value, no wagering free spins. Qualifying deposit must be wagered x 2, 2 day expiry on free spins once awarded. 18+ *18+ GambleAware.org Please play responsibly #ad
Get Up To 200 Cash Spins - Fishin' Bigger Pots of Gold (Requires 4 Deposits)
Bonus details
Minimum Deposit
£10 (x 4, on successive days)
Wagering
No wagering on spins winnings
Expiry
48 hours to use spins
Other Key Info
Play £10 within 12 hours of depositing on each of the 4 days to collect the spins
Site details
Uk License
Lindar Media Ltd, 51250
Bingo Software
Own Bingo Software
Payment Methods
Products
Slots
Casino
Bingo
Live casino
Is it any good?
The winner of multiple awards both as a bingo site and as a slot site, MrQ offers an impressive array of slot and casino games, plus unique bingo games all of which can be played with no wagering requirements ever.
Innovative and truly independent casino and bingo site
No wagering requirements
Slot game Return To Player is at or near the top of the range
Cons
Bingo prize pools are quite small as it's not networked
New customers only. Up to 200 spins over 4 day period from first deposit & spend of £10. Max 50 spins each day on Fishin' BIGGER Pots of Gold at 10p per spin for 4 consecutive days. Deposit & spend £10 each day for 50 spins. Spins credited upon spend of £10 each day. 18+ Full T&Cs apply. *18+ GambleAware.org Please play responsibly #ad
Very restricted deposit methods to claim the welcome offer
18+. New Casino players only. Deposit required (certain deposit types excluded). Bet £10+ on Slots games to get 100 Free Spins (selected games, value £0.10 each, 48 hrs to accept, valid for 7 days). Restrictions and T&Cs apply. *18+ GambleAware.org Please play responsibly #ad
Deposit £20 - £60, Get Up To 150 No Wagering Spins
Bonus details
Minimum Deposit
£20
Wagering
No wagering on winnings
Expiry
Spins 2 days
Other Key Info
Play through deposit 2x to qualify
Site details
Uk License
Small Screen Casinos Limited, 39397
Bingo Software
Pragmatic Play Bingo
Payment Methods
Products
Slots
Casino
Live Casino
Bingo
Is it any good?
The Phone Casino has been around for almost as long as the iPhone. It's designed to work brilliantly on any type of mobile phone and also on other devices.
Full T&CS apply. New Succesfully registered customers only. 1 offer per customer of Small Screen Casinos Ltd. Deposit £20, £40 or £60 and get 50, 100 or 150 x 0.10 stake value, no wagering free spins. Qualifying deposits must be wagered x 2, 2 day expiry on free spins once awarded. *18+ GambleAware.org Please play responsibly #ad
Deposit £10 Get £20 Casino Bonus + 150 Spins - Fishin' Frenzy The Big Catch
Bonus details
Minimum Deposit
£10
Wagering
50 x bonus
Expiry
30 days
Other Key Info
Debit card deposits only
Site details
Uk License
Platinum Gaming Ltd, 45322
Bingo Software
Relax Gaming Bingo
Payment Methods
Products
Slots
Bingo
Sportsbook
Casino
Live Casino
Poker
Is it any good?
Unibet probably isn't the first name that springs to mind when you think "big bookie" as they don't have a UK high street presence, but if you're looking for a really reputable site that combines sportsbook, casino, live casino, bingo and poker then it is certainly one to consider.
Full range of betting and gaming products under one roof
Great reputation
Cons
Debit card is the only deposit method that qualifies for the welcome offers
18+ New Customers only. Min Dep £10. Debit card only. Opt-in for bonus funds. Casino 50x wagering, game contributions vary, max. stake applies. Claim offer within 24 hours and use within 30 days. T&Cs Apply. *18+ GambleAware.org Please play responsibly #ad
Deposit £10+, Get 100% Slot Bonus up to £100 (+ 25% Slot Bonus up to £100 on 2nd deposit)
Bonus details
Minimum Deposit
£10
Wagering
200x bonus
Expiry
60 days
Site details
Uk License
Apollo Entertainment Limited, 38620
Payment Methods
Products
Slots
Casino
Live Casino
Is it any good?
The Zodiac Casino welcome offer has recently been changed to a conventional slot bonus welcome offer, but be aware that the wagering requirements remain supersize.
Beth StensonFreelance Contributor with more than 10 years of experience in the iGaming industry
Pros
A casino that's been in business for more than 20 years
Themed game categories make it easy to find games you'll like
Cons
Ridiculously high wagering requirements
* Welcome offer is for new customers only. The minimum deposit is £10. A two hundred times wagering requirement applies on all bonuses and certain games contribute a different percentage to the wagering requirements. Full terms and conditions apply. To receive the full £200 bonus, £500 is required in deposits. *18+ GambleAware.org Please play responsibly #ad
- This promotion is for new customers only.
- Customers must be 18+
- The promotional period is 00:00 20/05/24 and is an ongoing promotion. *18+ GambleAware.org Please play responsibly #ad
New customers only. Opt in and wager £20 or more on selected games within 14 days of registration. Get 100 Free Spins for selected games, valued at 10p and valid for 7 days. T&Cs apply. *18+ GambleAware.org Please play responsibly #ad
Stylish looking casino with a great range of games
Excellent selection of progressive jackpots
Cons
Promotions are heavily geared towards big spenders
18+. new players only. min. dep £20. max. bonus bet £5. 150% match up to £300 + 75 bonus spins on Big Bass Bonanza on your 1st deposit. Winnings from all spins credited as bonus funds and capped at £100. Bonus funds are separate to cash funds & subject to wagering requirement (35x deposit plus bonus). Only bonus funds contribute towards wagering requirement. Bonus funds must be used within 30 days, spins within 72hrs. Affordability checks & terms apply. *18+ GambleAware.org Please play responsibly #ad
Deposit £20+, Get 150% Slot Bonus (Up To £300) + 100 Bonus Spins
Bonus details
Minimum Deposit
£20
Wagering
40x (deposit+bonus)
Expiry
72 hours spins, 30 days bonus
Other Key Info
Max win from spins £100 bonus
Site details
Uk License
White Hat Gaming Limited, 52894
Payment Methods
Products
Slots
Casino
Live Casino
Is it any good?
Barz Casino is a rock music themed White Hat Gaming slot and casino site that was launched in 2021. It's got more than 2800 different slot and casino games to choose from.
Jason GreenJason Green has been writing about casino and online bingo and slots, as well as sports and sports betting, for over 20 years.
Pros
Vibrant rock music themed casino
Huge choice of games
Cons
Some games don't contribute to wagering requirements
18+. new players only. min. dep £20. max. bonus bet £5. 150% match up to £300 + 100 bonus spins on Starburst on your 1st deposit. Winnings from all spins credited as bonus funds and capped at £100. Bonus funds are separate to cash funds & subject to wagering requirement (40x deposit plus bonus). Only bonus funds contribute towards wagering requirement. Bonus funds must be used within 30 days, spins within 72hrs. Affordability checks & terms apply. *18+ GambleAware.org Please play responsibly #ad
Play £10, Get 30 Free Spins - Secrets of the Phoenix Megaways
Bonus details
Minimum Deposit
£10
Wagering
No wagering on spins winnings
Expiry
30 days
Other Key Info
Opt in and play £10 to qualify
Site details
Uk License
Gamesys Operations Limited, 38905
Bingo Software
Gamesys Bingo
Payment Methods
Products
Slots
Casino
Live Casino
Sportsbook
Bingo
Poker
Is it any good?
Bally Bet is a UK facing casino and sportsbook which also has a number of bingo rooms. You'll need to play through your deposit to collect the welcome offer spins, which are on an exclusive slot game, but after that there's no wagering requirements and no limits on what you can win.
Darren LaneFreelance Contributor with 18 years of experience in the iGaming industry
Pros
Great multi product site from a big name
Easy to understand promotions
Cons
Debit cards only
New members only, must opt in. Min £10 deposit & wager (excl. sports betting). 30 day expiry from deposit. 18+. Free Spins: on Secrets of the Phoenix Megaways. Spins value: 20p each. Game availability & restrictions apply. *18+ GambleAware.org Please play responsibly #ad
Great selection of games with an emphasis on slots and casino
Lots of player promotions
Slot game Return To Player can be checked in the lobby before playing
Cons
You can't claim the welcome offer if you already have an account with Buzz Bingo
1st Deposit only. Dep & Stake £10 on qualifying slots get £20 slots bonus (x20 wagering), 10p-£2 per spin limit on Big Bass qualifying slots. T&Cs apply. 18+ *18+ GambleAware.org Please play responsibly #ad
Deposit £10+, Get 11 Wager Free Spins & 100% Sign Up Bonus (Up To £200)
Bonus details
Minimum Deposit
£10
Wagering
35x bonus. No wagering on welcome offer spins
Expiry
Spins 24 hours, bonus 60 days
Other Key Info
Bonus released 10% at a time as you complete the wagering
Site details
Uk License
Videoslots Limited, 39380
Payment Methods
Products
Slots
Casino
Live Casino
Sportsbook
Is it any good?
At Mr Vegas there are literally thousands of slot and casino games to choose from, plus a schedule of Encores (in which you play slots against other players)
Beth StensonFreelance Contributor with more than 10 years of experience in the iGaming industry
Pros
Absolutely massive selection of games
Play tournaments against other players
Cons
Bonusing and wagering requirements are complicated
*New players only. Min deposit: £10. Account balance is withdrawable at any time upon withdrawal, any remaining bonus spins are forfeited. 7 days to activate the spins: Bonus spins expire 24 hours after activation. Full T&C Apply. *18+ GambleAware.org Please play responsibly #ad Full T&C's Apply
21 Casino is a White Hat casino that's been around since 2015. The welcome offer speaks for itself!
Pandora HughesPandora has been writing about casino gaming and bingo for over 17 years, combining her two loves of gambling and writing.
Pros
Classy looking casino with understated theming
Lots of helpful info on the game tiles
Cons
Light on player promotions
18+. New players only. Min deposit £10. Bonus funds are 100% up to £500 and separate to cash funds. 40x bonus wagering requirements apply. Deposit and bonus funds count towards wagering requirements. £5 max bet with bonus. Bonus funds must be used within 30 days, spins within 10 days otherwise any unused shall be removed. Affordability checks apply. Terms Apply. *18+ GambleAware.org Please play responsibly #ad
SpinYoo is powered by White Hat Gaming and was brand new for autumn 2021. The uncluttered design (neon colours on a black background) makes it ideal for those who like to play on their phone.
18+. New players only. Min Dep £20. Max Bonus Bet £5. The offer is 150% Bonus match on 1st deposit up to £100 on Slots. Bonus funds must be used within 30 days. Bonus funds are separate to Cash funds, and subject to 35x wagering of bonus funds and deposit amount. Only your bonus funds contribute towards any wagering requirements. Bonus funds can only be used on slot games. Affordability checks apply. *18+ GambleAware.org Please play responsibly #ad Full T&C's Apply
Deposit £10+, Get 100% Slot Bonus (up to £100) + 100 Spins - Gonzo's Quest or Starburst
Bonus details
Minimum Deposit
£10
Wagering
35x (deposit+bonus)
Expiry
Spins 10 days, bonus 30 days
Other Key Info
Bonus spins credited over 5 days, max win £50 per batch of 20
Site details
Uk License
White Hat Gaming Limited, 52894
Payment Methods
Products
Slots
Casino
Live Casino
Is it any good?
SKOL Casino is powered by White Hat Gaming and has a fresh, bright theme with lions, tigers, elephants and giraffes. There's also thousands of games to choose from and a new offer every day. Enjoy!
Darren LaneFreelance Contributor with 18 years of experience in the iGaming industry
Pros
Slots and casino site with quirky theming
Thousands of games to choose from
A deposit offer for each day of the week
Cons
Some games are excluded from bonus wagering
18+. New players only. Opt-in required. Min deposit £10. 100 bonus spins valid on Gonzo's Quest or Starburst. Bonus funds are 100% up to £100. Bonus spins credited at a rate of 20 bonus spins per day over five days, triggered on your first deposit. Bonus funds + spin winnings are separate to cash funds and subject to 35x wagering requirement (bonus + deposit). Only bonus funds count towards wagering contributions. Bonus spins winnings capped at £50. £5 max bet with bonus funds. Bonus funds must be used within 30 days, spins within 10 days. Affordability checks apply. Full Terms Apply. *18+ GambleAware.org Please play responsibly #ad
Spins are credited in batches over 10 days. Max win from each set of spins £50 (bonus)
Site details
Uk License
White Hat Gaming Limited, 52894
Payment Methods
Products
Slots
Casino
Live Casino
Is it any good?
Playzee is a quirky looking White Hat Gaming slot and casino site where the emphasis is very much on fun. As well as a huge selection of games, there's a different promotion for every day of the week.
Darren LaneFreelance Contributor with 18 years of experience in the iGaming industry
Pros
Huge range of slot and casino games
Delightfully quirky theming
Cons
Welcome offer spins are released in daily batches
18+ New players only. Min Dep £20. Max Bonus Bet £5. Offer: 100% of 1st deposit up to £300 + 150 Zee Spins on Starburst (first 60 credited on 1st deposit; rest credited at 07:00GMT at 10/day) + 500 Zee Points. Spins expire after 23:59GMT on day they’re credited. Winnings from each set of spins capped at £50 & credited as bonus. Bonus funds expire after 30 days, are separate to Cash funds, & subject to 35x wagering of bonus + deposit amounts. Affordability checks apply. Terms Apply. *18+ GambleAware.org Please play responsibly #ad
Play £10 on slots in the Casino to qualify. Debit card deposits only.
Site details
Uk License
Petfre (Gibraltar) Limited, 39544
Payment Methods
Products
Slots
Casino
Live Casino
Sportsbook
Bingo
Lotto
Poker
Totepool
Is it any good?
Betfred Casino is one of several places to play slot games on Betfred. It offers a great selection of Playtech slots and there's no wagering requirements on the welcome offer.
New customers only. 1+ deposit with Debit Card. Opt in and stake £10+ on Casino slots within 30 days of reg. Max 200 Free Spins. Credited within 48 hours. 7-day expiry. Game restrictions apply. Email/SMS validation may apply. Full T&Cs apply. *18+ GambleAware.org Please play responsibly #ad
Deposit £10+, Get 100% Slot Bonus (up to £50) + 20 Free Spins (Big Bass Splash)
Bonus details
Minimum Deposit
£10
Wagering
35x deposit. No wagering on spins winnings.
Expiry
Spins 2 days, bonus 90 days
Other Key Info
Awarded as cash after you complete wagering. Max cashout £250
Site details
Uk License
Dazzletag Entertainment Ltd, 39358
Payment Methods
Is it any good?
Casushi is a slot site, launched in 2020, from the people who brought you Peachy Games. The original theming absolutely had to be seen to be believed but it has now been rather toned down.
Beth StensonFreelance Contributor with more than 10 years of experience in the iGaming industry
Pros
Sushi themed slot and casino site that's part of a small network
Cons
Promotions are a bit sparse
18+. New players only. 100% First deposit bonus up to £50: Min deposit £10. Wagering including from balance funds: 35x deposit amount to unlock bonus as cash. 20 Free Spins on Big Bass Splash (no wagering). Free spin winnings credited to cash. Expiry: Bonus balance 90 days; Free Spins 2 days. Game Contributions: Wagering on table games, live casino, Slingo, video poker & instant games contributes 10%. Deposit Bonus forfeited upon withdrawal if wagering requirements not met. Deposit Bonus max cashout: £250. Further Terms Apply: Full Terms of Welcome Offer, General Bonus Terms, and General Terms and Conditions. *18+ GambleAware.org Please play responsibly #ad Full T&C's Apply
Deposit £10+, Get 100% Slot Bonus Up To £100 + 100 Bonus Spins
Bonus details
Minimum Deposit
£10
Wagering
35x (deposit+bonus)
Expiry
Spins 10 days, bonus 30 days
Other Key Info
Spin credited in batches of 20 over 5 days, max win £50 per batch.
Site details
Uk License
White Hat Gaming Limited, 52894
Payment Methods
Products
Slots
Casino
Live Casino
Is it any good?
Slotnite is a UK slot site from White Hat Gaming featuring a huge choice of slot and casino games.
Beth StensonFreelance Contributor with more than 10 years of experience in the iGaming industry
Pros
Clean, modern lobby design
Great selection of 1000s of slot and casino games
Cons
A bit light on promotions
18+. New players only. Opt-in required. Min deposit £10. 100 bonus spins valid on Aloha! Cluster Pays. Bonus funds are 100% up to £100. Bonus spins credited at a rate of 20 bonus spins per day over five days, triggered on your first deposit. Bonus funds + spin winnings are separate to cash funds and subject to 35x wagering requirement [bonus + deposit]. Only bonus funds count towards wagering contributions. Bonus spins winnings capped at £50. £5 max bet with bonus funds. Bonus funds must be used within 30 days, spins within 10 days. Affordability checks apply. Terms Apply. *18+ GambleAware.org Please play responsibly #ad
Deposit £25+, Get 100 Bonus Spins on Big Bass Splash
Bonus details
Minimum Deposit
£25
Wagering
35x
Expiry
72 house spins, 30 days bonus
Other Key Info
Max win from welcome offer spins £100 bonus
Site details
Uk License
White Hat Gaming Limited, 52894
Payment Methods
Products
Slots
Casino
Live Casino
Is it any good?
Spin Rider is a slot and casino site with a dark, edgy, modern theme. Powered by White Hat, its new welcome offer consists entirely of bonus spins on a Big Bass game.
Beth StensonFreelance Contributor with more than 10 years of experience in the iGaming industry
Pros
Great selection of slots games
Cons
Underwhelming welcome offer
18+. New players only. Min. deposit £25. Max. bonus bet is £5. Welcome offer is 100 bonus spins on BIG Bass Splash on your 1st deposit. Winnings from Bonus spins credited as bonus funds and capped at £100. Bonus funds are separate to Cash funds, and are subject to 35x wagering the total bonus & cash. Only bonus funds count towards wagering contribution. Bonus funds must be used within 30 days, spins within 72hrs. Affordability checks apply. Terms apply. *18+ GambleAware.org Please play responsibly #ad
Slots focused site which also has a good range of live casino games
Cons
Promotions are mainly for high spenders
18+. New players only. Min. deposit £20. Max. bonus bet is £5. Bonus spins on selected games only and must be used within 72 hours. Winnings from Bonus spins credited as bonus funds and capped at £100. Bonus funds expire in 30 days, unused bonus funds will be removed. Welcome Offer is 100% bonus match up to £300 plus 50 Bonus spins on Starburst your 1st deposit. Bonus funds are separate to Cash funds, and are subject to 35x wagering the total bonus & cash. Only bonus funds count towards wagering contribution. Affordability checks apply.
Terms apply. *18+ GambleAware.org Please play responsibly #ad
Deposit £20+, Get 100% Slots Bonus (up to £200) & 50 Bonus Spins (Book of Dead)
Bonus details
Minimum Deposit
£20
Wagering
35x (deposit + bonus)
Expiry
72 hours spins, 30 days bonus
Other Key Info
Welcome offer spins have a win cap of £100
Site details
Uk License
White Hat Gaming Limited, 52894
Payment Methods
Products
Slots
Casino
Live Casino
Is it any good?
Casimba is a casino & slot site powered by White Hat with a huge selection of slot and casino games.
Jason GreenJason Green has been writing about casino and online bingo and slots, as well as sports and sports betting, for over 20 years.
Pros
Flagship brand with huge selection of games
Cons
Welcome offer spins have a win cap and a wagering requirement
18+. New players only. Min. deposit £20. Max. bonus bet is £5. Bonus spins on selected games only and must be used within 72 hours. Winnings from Bonus spins credited as bonus funds and capped at £100. Bonus funds expire in 30 days, unused bonus funds will be removed. Welcome Offer is 100% match up to £200 plus 50 bonus spins on your 1st deposit, 50% match up to £50 on your 2nd deposit. Bonus funds are separate to Cash funds, and are subject to 35x wagering the total bonus & cash. Only bonus funds count towards wagering contribution. Affordability checks apply. Terms apply *18+ GambleAware.org Please play responsibly #ad Full T&C's Apply
First deposit only. Min deposit £20. Min wager £20 on slots. Max 100 Free Spins. Max one claim. Spins credited within 7 days after deposit. Spins valid on Big Bass Splash. Spin value 10p. Full T&Cs Apply. 18+. *18+ GambleAware.org Please play responsibly #ad
11 Wager Free Spins & Deposit £10+, Get 100% bonus up to £200
Bonus details
Minimum Deposit
£10
Wagering
35x deposit. No wagering on welcome offer spins
Expiry
Spins 24 hours, bonus 60 days
Other Key Info
Bonus is released 10% at a time as you complete the wagering
Site details
Uk License
Videoslots Limited, 39380
Payment Methods
Products
Slots
Casino
Live Casino
Sportsbook
Is it any good?
Videoslots has one of the biggest (possibly the very biggest) selection of slot games available anywhere. We're talking thousands of games, not hundreds.
Darren LaneFreelance Contributor with 18 years of experience in the iGaming industry
Pros
Absolutely enormous range of games
Play in slot tournaments
Cons
Wagering requirements are a bit complicated
Get 100% deposit bonus up to £200 on your first deposit. Your bonus is immediately available for activation after you have made your first deposit. To activate your bonus, go to "My Profile" → "My Bonuses". With only 35 times wager requirement! *18+ GambleAware.org Please play responsibly #ad Full T&C's Apply
18+. New players only. Min deposit £20. Offer: 150% first deposit bonus up to £30 on slots + 50 wager-free spins valid on Big Bass Splash. To claim the spins: min of £20 first cash deposit wagered on slots by 23:59 GMT. Spins credited the next day and valid until 23:59 GMT. Spin winnings credited as cash and capped at £100. Bonus funds are seperate to cash funds and subject to 40X wagering requirement (bonus + deposit). Only bonus funds count towards wagering contribution. £5 bonus max bet. Bonus funds must be used within 30 days. Affordability checks apply. Terms Apply *18+ GambleAware.org Please play responsibly #ad
Deposit £10+, Get 100% Slot Bonus (up to £100) + 20 Spins
Bonus details
Minimum Deposit
£10
Wagering
35x (deposit+bonus)
Expiry
Spins 24 hours, bonus 30 days
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Max win from welcome offer spins £100 (bonus)
Site details
Uk License
White Hat Gaming Limited, 52894
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Slots
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Is it any good?
Griffon Casino is new on the White Hat platform for winter 2024 (it was previously an Aspire Global casino). It's got a new and improved welcome offer.
Beth StensonFreelance Contributor with more than 10 years of experience in the iGaming industry
Pros
Casino and sportsbook combo
Weekly player promotions
Cons
Deposit is included in wagering requirement calculation, effectively doubling it
18+. New players only. Offer is valid on 1st deposit of min £10. 100% bonus match up to £100 plus 20 bonus spins on Book of Dead. Bonus funds + spin winnings are separate to cash funds and subject to 35x wagering requirement (bonus + deposit). Only bonus funds count towards wagering contribution. Winnings from Bonus Spins credited as Bonus funds and capped at £100. Bonus funds must be used within 30 days, spins within 24 hours. Max bonus bet £5. Affordability checks apply. Full Terms Apply *18+ GambleAware.org Please play responsibly #ad
Deposit + Play £10+, Get 100% Bonus Match (up to £100)
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Grace Media (Gibraltar) Limited, 57869
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Cosmic Spins is a slot and casino site which moved from the Betable platform to Grace Media in Spring 2024. If you had an account there previously your login credentials will still work.
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Best Payout Casinos & Slot Sites
The listings on this page are for casinos that set the Return to Player of variable RTP slot games near the upper end of the range, which means bigger payouts on average. Read on for an in-depth exploration of that and of other factors that affect casino payouts.
Return To Player is the amount of player stakes, averaged over hundreds of thousands of spins or more by large numbers of players, that a given slot machine pays back out in winnings. The higher the Return To Player of the game you’re playing, the longer it will take on average to burn through your bankroll. In other words – the lower the Return To Player the bigger the house edge and the more the odds are stacked against you.
And now we must lead off – as we do any discussion of the Return To Player of slot games – with our standard disclaimer:
The Return To Player of slot games can change and may not be the same at all casinos. Please check the in-game documentation before playing for the correct RTP figure.
But WHY do we need this disclaimer? Well, once upon a time all slot games were exactly the same wherever you played them, but this is no longer true. These days the Return To Player of many of the most popular slot games falls within a range and each operator chooses where in that range to set it. And having set it, they can always change their mind and reset it somewhere else within the range (and many have), which is why you should always check before playing in case it’s not what you thought.
But wait, don’t operators have to tell players what the RTP of their games is? Yes….and no.
YES – because they have to make the RTP available somewhere.
NO – because it does not have to be anywhere prominent and they don’t have to tell you where to find it
Let’s take that very popular game, Book of Dead. How can you find out what the Return to Player of that game is?
Don’t take this figure at face value! It entirely depends on where you play.
Here’s a clue – if you think you already know what it is, you’re probably wrong… and Googling it won’t work either, because you’ll get an out of date answer!
I tried Googling it so you don’t have to, and as you can see the top result (like most other search results on the first page) gives the Return To Player of Book of Dead as 96.21%. Now this is partially right, but wrong where it actually matters – because the RTP of Book of Dead WAS 96.21% everywhere until PlayNGo reconfigured it a couple of years back to have variable RTP! Now, it varies from site to site.
The red arrow points to the TINY question mark icon that pops up the game help files where you’ll find the RTP
At most online casinos, you won’t find RTP information on the game tiles or in the lobby – you have to load the game up, click the tiny question mark and scroll through the game rules to find out what the RTP is for the instance of the game you are playing.
Check the RTP of Book of Dead at a range of different casinos, as I did when researching this article, and you’ll find that very few casinos have kept it at the original 96.21%. Out of more than 20 casinos I checked, the only ones to have Book of Dead at this level of RTP were bet365, White Hat Gaming casinos and MrQ (where the 96.21% is helpfully displayed on the game loading screen and can be verified in the game help files).
At most of the online casinos I checked, the RTP had been set to 94.25% – almost two percentage points lower than what players who don’t know about variable RTP might expect.
A nasty surprise in the small print!
It gets worse than that, though, far worse. How about a 91.25% RTP on the same game? That’s what I found it to be on three popular casino platforms (and why you won’t find any of those casinos in the listings on this page).
And there’s even one group of skins which has it set at an extremely unappetising 87.25%. Because of the way that house edge compounds with every playthrough of your remaining funds, you’ll tend to burn through your bankroll much faster if you play there; pick one of the 96.21% RTP casinos instead and on average your money will last around three and half times as long.
Starburst is another serial offender. Yes, that most innocuous of “beginner” slot games now has RTP that frequently varies from its original 96.09%, although not quite as drastically as that of Book Of Dead. At quite a few white label sites it’s just 92.05% and I came across several values in between these two extremes. Again, at most sites you need to check the game help files AFTER you’ve loaded the game up to find out what the RTP is, but at least with Starburst it’s not in teeny tiny print as it is with Book of Dead.
And then there’s 9 Masks of Fire by Gameburger. According to Google, the RTP of this game and of its St Patrick’s Day reskin 9 Pots of Gold is 96.24% – but at many online casinos (and again, white label sites are the main culprit) it’s as low as 92.01%. Betfred is one where it’s been kept at 96.24% (last checked December 2024) and each of their game tiles has an information icon which pops up the RTP in the lobby so you can check before you play.
These are by no means the only games which have variable RTPs, just some of the most popular ones. And as we’ve seen, the differences are
significant and
often not at all obvious
Jackpot Size
When you play a wide area progressive jackpot slot like Mega Moolah the size of the jackpot is the same wherever you play it, but there are a number of progressive jackpots that don’t work like that; the two that are best known to UK players are Jackpot King by Blueprint and Red Tiger’s daily jackpots.
In both these cases the operator or (in the case of white label networks) the platform provider has their own progressive jackpot. For example, the Flutter Jackpot King is available at Paddy Power and other sites owned by Flutter, and the Skill on Net Jackpot King is available at all sites on the Skill on Net casino software.
In theory, it should be best to play a Jackpot King or Red Tiger slot at the site with the biggest jackpot, as the chances of your winning don’t change but the amount you would win if you did would be bigger. But guess what – it’s not that simple!
This is a snapshot of what I found when I visited and compared a few sites in September 2023. The Jackpot amounts were mid morning, midweek, and there’s a reason why the Gamesys and Aspire Jackpot Kings were so very much smaller than the others – it had only recently been introduced at those sites so their pot had not yet had much time to grow. As for the difference in the sizes of the daily drop, that’s down to volume of players and seed value. Later in the day they would be more pronounced (or already have dropped!)
Where
Jackpot King
RTP in Game Docs – Fishin’ Frenzy Even Bigger Catch
Red Tiger – Daily Drop
RTP in Game Docs – Dragon’s Luck
Flutter
£3,837,071.45
93.49% + JP 0.38% + 0.11% reserve
£5878.11
93.24% which includes base game RTP and jackpot contribution
Gamesys
£244,414.20
95.49% + JP 0.38% + 0.11% reserve
£2078.92
94.24% which includes base game RTP and jackpot contribution
Skill On Net
£2,214,687.80
93.49% + JP 0.38% + 0.11% reserve
£1127.42
92.13% which includes base game RTP and jackpot contribution
Entain
£2,146,561,29
95.49% + JP 0.38% + 0.11% reserve
£4922.39
92.13% which includes base game RTP and jackpot contribution
Rank
£2,096,850.31
Game not available
£1837.54
94.24% which includes base game RTP and jackpot contribution
Betfred
£3,363,925.07
95.49% + JP 0.38% + 0.11% reserve
£1138.15
96.14% which includes base game RTP and jackpot contribution
Aspire
£191,451.19
93.49% + JP 0.38% + 0.11% reserve
None
Non jackpot version – 91.05%
What we can immediately see is it’s NOT just the sizes of the jackpots that are different, there’s quite a bit of variation in the RTPs as well! And what’s going on with the non jackpot Red Tiger game having a worse RTP than any of the jackpot versions of the same game?
Let’s bring that disclaimer up again, shall we, so as not to get distracted by jackpot size?
The Return To Player of slot games can change and may not be the same at all casinos. Please check the in-game documentation before playing for the correct RTP figure.
Promotions
Anything you receive as a result of taking part in a promotion – the welcome offer, free spins, a bonus, cashback or anything you win from a leaderboard or a prize draw – will be over and above the RTP of any games you play in the course of qualifying for the promotion. If a casino runs lots of promotions you might reasonably expect to get more of a return on your deposits than if they didn’t (if you participate in the promotions, that is). Promotions can also add to the entertainment value.
BUT – and it is a big but – it is entirely possible that the operator has set their slot RTPs at the lower end of the scale and that’s how come they are able to afford to run so many promotions! In that scenario, the biggest losers are the players who DON’T participate in the promotions as they are essentally losing out twice – once by not collecting the rewards and once by getting stung on RTP.
A casino that runs lots of offers and promotions, then, does not necessarily give the best payouts.
Other factors that can affect payouts
Player funds segregation & protection
What do you think would happen if you had thousands of pounds on deposit in an online casino account and the operator went into administration (as happened in the case of Football Index)? You may well be horrified to hear that even at a UK regulated site you would not necessarily have precedence over any other creditor, but that is the case at the majority of online casinos. UK regulated online casinos are required to put a statement in their terms and conditions about the level of player funds protection they have and for many of them, it’s “Not Protected”. (The Gambling Commission are currently consulting on how to improve this for players).
It won’t have occurred to many players that this could even be an issue and many don’t read the terms and conditions thoroughly enough to discover that it is, and that’s why we include this information in all our reviews. At an online casino with “Medium” funds protection you would most likely be paid in full if the worst were to happen and with “High” protection there’s a cast-iron guarantee that you would.
And while we’re on the subject of player funds protection – don’t be tempted to play at an unregulated casino, where you might not get paid at all!
Payment method issues
Depositing using a method other than debit card can make it difficult to withdraw winnings and can actually reduce payouts:
Your chosen payment method may have a low transaction limit
Your chosen payment method may charge a fee and/or the casino may charge you a fee for using it. For example, most pay by phone casinos charge a fee for deposits via mobile phone billing, and Neosurf charges a fee for adding voucher codes to MyNeosurf.
If your chosen payment method does not support withdrawals the casino may charge a fee to pay you via bank transfer as well as asking you to supply extra ID to verify that the bank account is yours.
Account verification
Account verification (especially when combined with affordability checks) doesn’t affect the amount a casino pays out in theory, but in practice it can make it a difficult and time- consuming process to extract your winnings. At big name online casinos checks are normally carried out seamlessly and unless you don’t have much of a credit history and/or have recently changed address, you may not even be aware of them going on. Smaller operators often don’t have access to as much technology and here, you may find you have to send them copies of your bank statements or utility bills and/or a selfie of you holding your passport. Jumpman in particular are well known for repeatedly rejecting documents without an explanation.
All of these factors can affect how much a casino pays out, but the crux of it really is Return To Player, and as we go into 2025 even more slot games are being released with variable RTP. If you want the best casino payouts, this is something that you definitely ought to be paying attention to. Our listings are a starting point (and we’ve also highlighted the casinos that show you RTP before you open the game) but please check the RTP before you start to play.
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