The best casino sign-up offers in the United Kingdom offer bonus cash and free spins, with low wagering requirements and fair terms and conditions.
So, to help you identify the best casino welcome bonuses currently offered in the UK, we reveal what to look for and then introduce the very best welcome packages. We also reveal unique promo codes to access the best bonuses on the market.
What to Look for in the Best Casino Sign-Up Bonuses
Before we dive into our top list, let us explain how we determine a good welcome bonus from a bad one:
- Bonus amount: Ideally, the welcome bonus will offer at least £100 in cash or 100 free spins. The more spins and bonus cash, the better for players.
- Wagering requirement: Bonus wagering requirements at UK casinos typically range from 10x to 80x. We think anything up to 40x is reasonable, giving you a fair chance of playing through the offer to cash out your winnings.
- Minimum deposit: We like to see welcome bonuses that can be triggered with a £10 deposit. £20 or higher can be a little much for low-budget players.
- Game eligibility: We also appreciate welcome bonuses that can be used on top slot games, rather than obscure games that nobody has ever heard of.
The UK’s Best Casino Welcome Bonuses & Promo Codes – Find the Best Casino Sign-Up Offers in the UK
Unsure which online casino to sign up for? Looking for the best casino sign-up bonuses in the UK? Register via Gambler Media for the best casino welcome bonus in the UK in 2025. Here’s a run-through of the best casino sign-up promo offers right now, with our views on what makes them stand out from the crowd:
Bet365 Casino Welcome bonus: 10 days of free spins (up to 200 free spins)
🔐Promo code: 365GMBLR
Bet365 has an outstanding reputation, and I rate it as one of the best casino sign-up offers, with ten days of free spins as a new player. You must sign up and deposit £10, then, each day, click the yellow, blue or red button to reveal a prize of five, ten, or 20 free spins, eligible for Book of Horus, Magic Forge, and Wrath of the Deep. The true value of these free spins lies in the fact that there’s no wagering requirement; any winnings are yours to keep.
Mr Play Casino Welcome bonus: 100% up to £200 in bonus cash plus 100 free spins
🔐Promo code: BGPLAY
I rate Mr Play’s dual bonus as one of the best casino sign-up offers right now. Deposit at least £10 to trigger a deposit match of up to £200 and 100 free spins to use on selected slots. This promotion is actually across your first three deposits, and you must satisfy a 35x wagering requirement before cashing out any winnings. The only downside here is that the free spins winnings are capped at £100, which I think is a little low.
Magical Vegas Casino Bonus: Up to £300 from an initial deposit of £10+ plus 30 free spins
🔐Promo code: BGVEGAS
Use our promo code AGVEGAS to unlock one of the highest and best casino welcome bonuses in the UK right now. Magical Vegas will match up to £300 in bonus cash on your first deposit when you add at least £10 to your account. You can also access 30 free spins on top slots like Bigger Bass Bonanza and Eye of Horus Megaways. The 30x wagering requirement is reasonable, but the exclusion of PayPal and Paysafe deposits from the bonus will disappoint some users.”
Lucky VIP Casino Sign up bonus: Deposit £20 to play with £50
🔐Promo code: BGVIP
While you will find higher-value casino welcome packages elsewhere, I’m a big fan of the Lucky VIP new player promo. When you sign up and deposit at least £20, you will receive a £30 free slots bonus, eligible on Big Bass Bonanza, Eye of Horus, Fishin’ Frenzy The Big Catch, Book of Ra, and Lucky Lady’s Charm Deluxe. The 30x wagering requirement is achievable, and the £2,000 max conversion is higher than other sites. The only downside is that the bonus is only offered for seven days before expiring, so only trigger it when you’re ready to play.
Rialto Casino New UK Customer Offer: 100% up to £100 + 50 free spins on Megaways Slots
🔐Promo code: BGRIALTO
💬Our editor’s view: “Rialto is a sleek and modern casino that I love playing at, and it also offers one of the best casino sign-up offers of the year. Sign up, enter the promo code AGRIALTO, and deposit at least £20 to trigger a 100% bonus up to £100 plus 50 free spins on Fishin’ Frenzy Megaways. The max conversion on this bonus is 5x, which is lower than at Lucky VIP. The bonus cash has a wagering requirement of 40x, while the free spins must be wagered 25x before cash out is approved.”
Spin & Win Casino Deposit Promo: Up to £250 plus 100 bonus spins when you deposit £10
🔐Promo code: BGSPIN
Spin & Win is another of the best casino welcome bonuses for new players in 2025. Deposit at least £10 and enter the promo code AGSPIN to receive a 100% deposit match up to £250. You will also get 100 free spins, valid for numerous Blueprint games. I like that the bonus cash and free spins have a manageable wagering requirement of 30x, but the max win from the cash is £1,000 and the maximum spins conversion is £50, which is a little low.”
The Vic Casino Welcome Bonus: Get up to £200 in bonuses and 100 free spins on your first three deposits
🔐Promo code: BGVIC
The Vic is a top online casino in the United Kingdom with a vast game lobby and great deals. The welcome bonus is high value, giving you up to £200 in cash and 100 free spins on selected slots, claimable across your first three deposits. However, it’s mostly a good deal for high rollers, as the 50x wagering requirement is a little high. Also, you won’t be eligible for this offer if you make your initial deposit of £20 or more via PayPal or Paysafe.
Luckster Online Casino Bonus: 100% up to £200 plus 100 free spins
🔐Promo code: BGLUCKSTER
I was initially drawn to Luckster because of the awesome Irish theme, but I quickly realised how good the bonuses are here, too. Across your first three deposits, you can unlock up to £200 in bonus cash when you enter the promo code BGLUCKSTER when you make your first deposit of at least £10. You will also receive free spins for top slots like Starburst and Book of Dead, up to 100 in total. The wagering requirements for this offer are 35x, which applies to both the bonus cash and free spins.
The Best Casino Sign-Up Bonus Offers
| UK Casinos | Bonus | Promo Code | Deposit | Free Spins | Wagering | Our Take |
|---|---|---|---|---|---|---|
| Bet365 Casino | Up to 200 Free Spins over 10 days | 365GMBLR | £10 | ✅ Yes | ❌ No wagering | Best for no-wager free spins on top slots like Magic Forge & Book of Horus |
| Mr Play Casino | 100% up to £200 + 100 spins (over 3 deposits) | BGPLAY | £10 | ✅ Yes | 35x | Great combo bonus; capped wins on spins slightly limit value |
| Magical Vegas | 100% up to £300 + 30 spins on Bigger Bass Bonanza | AGVEGAS | £10 | ✅ Yes | 30x | High bonus limit and strong slot selection, no PayPal/Paysafe allowed |
| Lucky VIP | Deposit £20 to play with £50 (slots bonus) | BGVIP | £20 | ✅ Yes | 30x | High max cashout and good slot variety; expires after 7 days |
| Rialto Casino | 100% up to £100 + 50 spins on Megaways slots | AGRIALTO | £20 | ✅ Yes | 40x/25x spins | Sleek platform with good games; 5x max win cap on bonus |
| Spin & Win | 100% up to £250 + 100 Blueprint spins | AGSPIN | £10 | ✅ Yes | 30x | Big game list and easy start; capped cash/spins wins |
| The Vic Casino | Up to £200 + 100 spins across 3 deposits | BGVIC | £20 | ✅ Yes | 50x | Ideal for high rollers; no e-wallets for offer |
| Luckster Casino | 100% up to £200 + 100 free spins | BGLUCKSTER | £10 | ✅ Yes | 35x | Balanced bonus over 3 deposits; strong theme and games |
Our UK Bonus Sites Picks (2025)
- Best for No Wager Free Spins: Bet365 Casino – No wagering, daily spin surprises.
- Best Overall Bonus Value: Magical Vegas – £300 max match with top-tier slots.
- Best Slots Welcome Deal: Mr Play Casino – Free spins on NetEnt, Play’n GO classics.
- Best Low-Stakes Start: Spin & Win Casino – Big bonus for just a £10 deposit.
- Best VIP-Like Experience: Lucky VIP – High-conversion slots bonus with elite feel.
Gambler Media is a trusted online casino authority, and our writers know what to look for in the best casino welcome bonuses. All the offers above are valuable, fair, and easy to access, with reasonable wagering requirements and acceptable conversion rates.
So, sign up for any of the recommended sites above to kick things off with bonus cash and free spins. Don’t forget to use our unique casino promo codes to maximise the bonus funds and spins available.