New Online Casino Sites UK 2025

The UK’s online casino scene never stands still. Every year, fresh new platforms pop up, promising bigger bonuses, faster payouts, and the latest gaming tech. But with so many options, how do you know which ones are worth your time – and money? That’s where we come in. As a leading casino comparison site, we’ve done the hard work – testing, reviewing, and ranking the best new casino sites in the UK this year. Let’s get stuck into what makes these guys stand out from the crowd.

Best New Casinos – May 2025

QuickBet Logo

QuickBet

4.6/5

100% Deposit Bonus up to £100 or £10 Free Bet

Welcome bonus for new players only | Maximum bonus is 100% up to £100 | Min. deposit is £10 | No max cash out | Wagering is 40x bonus | Maximum bet with an active bonus is £5 | Eligibility is restricted for suspected abuse | Cashback is cash with no restrictions | Skrill & Neteller deposits excluded | T&C's apply Free bet: Min odds: 2.0 – Free bet value will be deducted from free bet winnings.

Midnite Logo

Midnite

4.8/5

Bet £20 Get 100 Free Spins

New customers only. Deposit and wager £20 on Midnite Casino to get 100 Free Spins at 10p per spin, valid for 7 days on selected games. T&Cs apply. 18+ BeGambleAware.org

Kachingo Logo

Kachingo

4.7/5

100% up to £150 + 50 Bonus Spins

18+ New Players Only. Welcome Package – Min deposit £20. UK Players only. Max Bonus 1st Deposit 100% up to £50 and 2nd deposit 50% up to £100. Wagering requirement: 35x within 21 days. 20 Spins on 1st deposit and 30 spins on 2nd deposit. Spins credited on: Big Bass Bonanza. Spins expire after 24 hours. Begambleaware.org. T&Cs apply.

Mega Riches Logo

Mega Riches

4.8/5

100% Up to £100 + 50 Free Spins

18+. Gamble Responsibly. Gambleaware.org The Welcome Offers cannot be used in conjunction with any other bonuses. These Key Terms and Conditions form part of and are an extension of the General Terms and Conditions. If and where there is a conflict between these Terms & Conditions and the General Terms and Conditions which relate specifically to the Welcome Bonus and Welcome Spins, these Key Terms and Conditions will prevail. Mega Riches reserves the right to withdraw or amend this promotion at any time. Minimum deposit £ 10. Opt-in required.

Neptuneplay Logo

Neptuneplay

4.8/5

100% Welcome Bonus Up To £100

#AD. Gamble Responsibly. Gambleaware.org. New Players Only. +18. Terms and Conditions Apply. Min. Deposit £10. Offer valid for 24hrs. Wagering requirement: 40x. 

Pub Casino Logo

Pub Casino

4.8/5

100% up to £100 + 110 Free Spins

#AD | Welcome bonus for new players only | 110 free spins on Banquet of Dead after 1st deposit | Maximum bonus is 100% up to £100 | Min. deposit is £10 | No max cash out | Wagering is 40x bonus | Maximum bet with an active bonus is £5 | Eligibility is restricted for suspected abuse | Skrill & Neteller deposits excluded for welcome bonus | Cashback when offered, applies to deposits where no bonus is included | Cashback is cash with no restrictions | T&C's apply | 18+ | BeGambleAware.org | Gambling is addictive, please gamble responsibly!

Winissimo Logo

Winissimo

4.8/5

100% Welcome Bonus up to £200

New Players Only. Wagering occurs from real balance first. 50X wagering the bonus. Contribution
may vary per game. Available on selected games only. The wagering requirement is calculated on bonus bets only. Bonus valid 30 Days from receipt / Free spins valid 7 days from receipt. Max conversion: 3 X the bonus amount. Limited to 5 brands within the network. Withdrawal requests void all active/pending bonuses. Excluded Skrill and Neteller deposits. Full Terms Apply

Funky Jackpot Logo

Welcome Offer up to £100 + 25 Free Spins

New Players Only. Wager from real balance first. 50X wager the bonus. Contribution varies per game. Selected games only. Wager calculated on bonus bets only. Bonus valid 30 days / Free spins valid 7 days from receipt. Max conversion: 3 times the bonus amount or from free spins: £20. Limited to 5 brands within the network. Withdrawal requests void all active/pending bonuses. Excluded Skrill and Neteller deposits. Full Terms apply

Lottomart

4.8/5

100% up to £200 + 100 Free Spins

£20 min deposit. £200 max match. 50x wagering on Bonus + Free Spins winnings. Free Spins must be used to reveal Playthrough. Live & Table Games have a 0% contribution. Only Slots & Instants count towards playthrough. Game eligibility & contributions vary. 10p to £5 bet range. £1,000 max redemption. New players only. Exclusive to select customers. Limited time offer. Valid 7 days. 18+. Be GambleAware.org. Terms Apply.

Casushi Logo

Casushi

4.7/5

100% Welcome Bonus up to £50 + 20 Free Spins

18+. New players only. 100% First deposit bonus up to £50: Min deposit £10. Wagering: 35x deposit amount to unlock as bonus cash. Bonus balance not playable until wagering is met. 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%. Neteller & Skrill deposits not eligible. T&Cs apply. GambleAware.org.

Author

Green, Navy and White Male Icon

Fact Checked By: Jamie

Ais is one of the streamers on the Hideous Slots YouTube channel and also one of the content writers on the website. Ais has a passion for both writing and slots, making him the perfect person to produce slot reviews on all of the latest and greatest releases! On stream he brings energy and excitement that has led to a loyal viewer base, eager to watch him in his Sunday morning ‘Songs of Ais'.