UK Casino Welcome Bonuses, Compared

MayfairCasino.com is an independent comparison site. We do not run promotions of our own, hold player funds or take bets. What we do is read the welcome-offer fine print at every UKGC-licensed casino we review and pull out the parts that actually matter: minimum qualifying deposit, wagering multiplier, eligible games, maximum bonus conversion and time limit.

The bookmaker industry calls these "new player offers" or "welcome bonuses". They are the only promotions UKGC rules let operators advertise to people who do not yet hold an account. Existing-player promotions, prize drops and tournaments live inside each operator's own logged-in area and are not advertised on this site.

Our pick of the current UK welcome offers

Each link below opens the operator's review on this site, which includes the full T&Cs of the welcome bonus, an honest score on bonus value, and a direct affiliate exit to the operator if you decide to claim it.

How to read a welcome bonus

Headline numbers are designed to grab attention. The bits worth focusing on are:

• Wagering multiplier. A 35x wagering requirement on a £100 bonus means £3,500 of qualifying bets before any winnings convert to cash. Anything 40x or higher is steep.
• Maximum bonus conversion. Some operators cap how much of a bonus you can ever convert to cash, regardless of how much you wager. That cap matters more than the headline match percentage.
• Eligible games. Slots usually contribute 100% to wagering, table games 10% or less, live dealer often 0%. If you only play live dealer, a slots-only bonus is no bonus at all.
• Time limit. Most welcome offers expire 7, 14 or 30 days after credit. Miss the window and the bonus and any winnings derived from it disappear.
• Minimum qualifying deposit. Sometimes £10, sometimes £20, occasionally £5. The threshold is set to flush out bonus-abusers; it is not a recommendation on what you should deposit.

A note on existing-player promotions

UKGC rules prevent licensed operators from advertising bonuses, prize drops, free spin giveaways and similar promotions to anyone who does not already hold an account with them. That is why this page focuses on welcome offers only, and why every operator's existing-player promo calendar lives behind their own login.

All UK-licensed operators are required to display their welcome-bonus terms in full and to follow CAP and ASA rules on misleading advertising. We may earn an affiliate commission when readers sign up through links on this site. This never affects which operators we recommend or how we score them.

18+. New customer offers. T&Cs apply on every bonus. Read the operator's full bonus terms before claiming. Gambling can be addictive. Please play responsibly. BeGambleAware.org