Best Slot Bonus UK

Understanding UK licenced slots bonuses, find the best welcome bonus for you!

Discover great slots welcome bonuses from 12 of the top UK slot sites. Compare wagering requirements, first deposit match percentages, free spins and slot bonus money. If you’re thinking about the sign up – check out these top deals first!

  • Karamba

    UK casinoUKGC Licence + UK players
    500+ games
    First deposit sign up bonus with free spins
    40x wagering
    Karamba Casino Logo
    Min deposit: £10
    100% Bonus up to £50
    + 100 Spins
    18+, new customers only, T&Cs apply, wagering bonus 40x, min deposit £10. | #AD
  • 888 Casino

    UK slots bonusUKGC Licence + UK players
    1,000+ games
    Slots sign up bonus no deposit + first deposit match
    50x & 30x wagering
    888 Casino Logo
    Min deposit: £20
    £88 Free No Deposit
    + 100% Bonus up to £100
    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 Bonus Offer: £20 min deposit • Valid for selected games • Bonus wins capped at £500 • 30x wagering – req. vary by game • Bonus expires within 90 days • Withdrawal terms, No Deposit Offer terms & Deposit Bonus Offer terms apply. | #AD
  • Lucky Thrillz

    Players from UK acceptedUKGC Licence + UK players
    460+ games
    Casino slots deposit bonus + free spins
    35x wagering
    Lucky Thrillz Casino Logo
    Min deposit: £20
    100% up to £25
    + 25 Spins
    New Players only. 18+. Min Deposit £20, Max. bonus: £25. Plus 25 spins that will be issued upon your first deposit.Winnings won with games that require deposit, have to be wagered 35x.Bonuses that require deposit, have to be wagered 35x. | #AD

  • MrQ Casino

    Union JackUKGC Licence + UK players
    300+ slots and bingo
    Slots welcome bonus with 0x wagering
    No wagering
    MrQ Casino Logo
    Min deposit: £10
    Get 30 Free Spins
    with Bonus Code: V30
    First deposit only. Min deposit & spend £10. Max 30 spins on VALHALLA at 25p per spin. Spins credited upon spend of £10. Full T&Cs apply. | #AD
  • Mayfair Casino

    Bonus for UK playersUKGC Licence + UK players
    400+ games
    Three deposit slot bonus with free spins
    30x wagering
    Mayfair Casino Logo
    Min deposit: £10
    Up to £400 Welcome Offer
    + 175 Spins
    18+, new customers only, Over first 3 deposits, T&Cs apply, 30x wagering, min deposit £10. | #AD
  • Mr Play Casino

    UK sign up bonusUKGC Licence + UK players
    350+ games
    200 slots bonus
    35x wagering
    Mr Play Casino Logo
    Min deposit: £10
    Up to £200 Bonus
    + 100 Spins
    18+, new customers only, T&Cs apply, wagering bonus 35x, min deposit £10. | #AD

  • Casiplay Casino

    UK slots siteUKGC Licence + UK players
    480+ slots and games
    4x deposit bonus slots package
    35x wagering
    Casiplay Casino Logo
    Min deposit: £20
    Up to £800 Bonus
    + 100 Extra Spins
    18+, new customers only, T&Cs apply, wagering bonus 35x, min deposit £20. | #AD
  • Jackpot Paradise

    UK licenced bonusUKGC Licence + UK players
    550+ games
    200 slots welcome bonus
    50x wagering
    Jackpot Paradise Casino Logo
    Min deposit: £10
    Up to £200 Bonus
    + 100 Spins
    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 is valid for 30 Days from issue. Max conversion: 3 times the bonus amount. Excluded Skrill deposits. Full Terms apply. | #AD

  • Touch Mobile Casino

    Best online scratch cards to buy in the UKUKGC Licence + UK players
    500+ slots and games
    Multiple choice sign up bonus for slots players
    20x wagering
    Touch Mobile Casino Logo
    Min deposit: £10
    Up to 50 Spins
    or up to £200 Cashback
    New Customers Only. First Deposit only. Minimum Deposit £10 for Spins. Minimum 10 and Maximum 50 bonus spins on selected slots only. 2x Conversion, 20x wagering. Min Deposit £50 for 10% cashback on 1st deposit based on slot net losses for 24 hours. Max Cashback £200. Elk Gaming Slots excluded. Full T&Cs apply. | #AD
  • Cloud Casino

    Best online scratch cards to buy in the UKUKGC Licence + UK players
    600+ slot games
    Free slots with bonus over first three deposits including 150 spins
    40x wagering
    Cloud Casino Logo
    Min deposit: £10
    Up to £400 Bonus
    + 150 Spins
    New Customers only, First 3 deposits only, Min Dep £10, Max Bonus £400 + 150 Spins on Starburst, Selected Slots Only, 4x Conversion, 40x wagering (Bonus + Spins), Full t&c’s apply. | #AD

With more game releases, in-play features and slots bonuses to incentivise players, slot games have never been more popular. Whether it’s free slot games with bonus spins, demo content or a no deposit slots bonus, 2021 is an excellent year to try out new casino games. Real money is good too. Anyone looking for a relatively affordable way to access hundreds of online slots can use casinos with deposit bonus slots to help get them started – but which are the best slot bonuses and where can you find them?

If you’re looking for instant win games instead, check out our best scratch cards to buy online in 2021.

10 of the best UK slot bonus offers this week

  1. Karamba Casino 100% up to £50 + 100 Spins
  2. 888 Casino£88 Free Bonus + 100% up to £100
  3. Lucky Thrillz Casino100% up to £25 + 25 Spins
  4. MrQ CasinoGet 30 Free Spins
  5. Mayfair CasinoUp to £400 + 175 Spins
  6. Mr Play CasinoUp to £200 + 100 Spins
  7. Casiplay CasinoUp to £800 + 100 Spins
  8. Bgo CasinoWin up to 500 Free Spins
  9. Jackpot ParadiseUp to £200 + 100 Spins
  10. Touch Mobile CasinoUp to 50 Spins or £200 Cashback

UK Slots Bonuses Guide 2021 – How to find the best slots welcome bonus

Slots are a fun way to play real money games online without any download. However, your experience depends on what you play, how much you spend playing it and which online casino you choose to join. But choosing isn’t easy. How can you tell the top sites from the not so good, and where do you find the best slots welcome bonus? (Don’t worry, we’ll get to that!)

As the most popular choice in all casino site games libraries, slots are the perfect go-to option. There are now thousands of ways to win, excellent graphics and immersive gameplay – you can play for free, from just £0.10 in most cases or high-roll yourself to the heavens.

You can win lots from betting little, activate bonus levels with free spins and multipliers or access huge progressive jackpot networks at the command of press play. Is it really any wonder most of us play online slots when it comes to gambling? In fact, the latest data from the UK Gambling Commission reveals that most players will spin for a 21-minute session on average. So if we’re doing it, we need the best sign up slots bonus available, and the top UK slot sites too.

Best online scratch cards to buy in the UK

At WinLottoJackpots, we aim to find trusted online casinos with a slot bonus worth the sign up. A mixture of the newest slot sites and some old familiar favourites. All licensed by the UK Gambling Commission and fully stocked with some of the best real money games on the planet.

Understanding a Top UK Casino Site Slot Bonus

There are countless welcome bonuses available when it comes to joining an online casino. Some you deposit, others there’s no deposit – but each one offers you something in return for signing up. It’s the casino’s way of saying hello, and while there’s a few different bonus offers you might come across, they’re all similar when you scratch the surface. However, some slot casino sites are better than others when it comes to the welcome bonus.

Nowadays, most slot sites offer a welcome bonus, providing an incentive to players in the form of bonus money or free spins. Usually, it’s a first deposit bonus that matches your deposit with free play – often subject to wagering requirements. And typically they’re aimed at different games or a part of the casino – such as live roulette etc. But if online slots are your game, then you should be looking for the best slot bonus.

From wagering requirements to boring T&Cs, we take a look at some common factors that UK online casinos use to calculate their slots welcome bonus.

  • How slots bonus casino sites calculate sign up offers

    • Bonus Type: The slots bonus type is one of the most significant factors that casinos use. Is this a free sign up bonus with no deposit required? Do you need to deposit and how much is the minimum deposit to qualify for the bonus.
    • Bonus Amount: Often advertised as £100, £200, £300 or even more, the bonus value is the main figure in the offer. If it’s free spins or extra spins, you might see 10 free spins or something like “up to 100 free spins”. As a rule of thumb, the bonus value that you see is often the maximum bonus you can get if you sign up.
    • Game Subject: As you’d expect, the best bonus slots offers focus on slot games and slots players. Roulette, live dealers and Slingo slot sites do the same thing aimed at their players. The game subject is the category of the bonus. The online slots bonus is the most common given the sheer amount of games and being able to advertise free spins.
    • Percentage Deposit Match: As of 2020, most online casinos include a deposit match as part of their casino welcome bonus. For example, a 100% first deposit bonus up to £100 is the most common type you’ll come across. That means the maximum bonus available is £100 in bonus play if you deposit £100. It’s like a mirror that matches your initial deposit on sign up, but can sometimes be spread over your first four deposits.
    • Wagering Requirements: Unless you find a good no wagering deposit bonus, your sign up offer will be subject to wagering requirements. A wagering requirement is a multiplier that represents the number of times must play through a bonus before you can withdraw any winnings.

      Casinos are free to require players to meet wagering requirements for bonus winnings so long as they can withdraw winnings made with their own funds. Wagering requirements range from no wagering to 65x wagering. Most of the best slot sites average between 30x and 40x wagering on welcome bonuses.

    • Bonus Spins Value & Winnings Cap: Nearly every slots welcome bonus comes with free spins, but what are they really worth? Take a close look at the T&Cs of your sign up deal, and you’ll find out.

      Your free spins will have a value. It means you can’t adjust the betting stakes in any way and are subject to the pay table based on the fixed price of your free spins. Some standard free spins bonus models include 50 free spins at £0.25 a spin or 100 free spins at £0.10 a spin. There’s also a winnings cap, meaning that winnings generated from the free spins can’t be greater than this amount.

  • What is a casino site bonus for slots players?

    According to the UK Gambling Commission, a slot bonus is any funds or equivalent provided by the operator and added to a consumer’s account from which the consumer can place wagers, including deposit matching funds for wagering at the consumer’s discretion and free spins on specific games.

    Popular games used by the top slot sites for free spins bonuses

    Starburst is the main game in most online slots welcome bonuses Twin Spin Slot Rich Wild and the Book of Dead