Best Slots Bonus UK

Slots bonuses - Extra Spins, Bonus Spins, or whatever you want to call them, we have collected them below. Sort on your criteria and find the best bonus for use in top online slots.

Top Slots Bonuses

18+ New Customers Only - T&C Apply - Play Responsibly

  • Best grade
  • Turnover
  • Min. deposit
  • Free spins
  • Opt in required. New customers to Casino page only. 1x per customer. Min. Buy in £10. Bonus value 100% of Buy in. Max. Bonus £300. 40x Wagering, Max Redeemable £4,000. 50 Free Spins with x35 wagering will be awarded after the Buy in Bonus is completed, Max Redeemable £1,000. Bonus expires after 7 days. Stake contributions, player, country, currency, game restrictions and terms apply.
  • 18+ Minimum deposit £20. Bonus spins must be used within 72 hours. Bonus funds are 100% match up to £300 with 25 spins on your 1st deposit, 25% match up to £800 with 50 spins on your 2nd deposit, and 50% match up to £400 with 25 spins on your 3rd deposit. Bonus funds are separate to Cash funds, and are subject to 35x wagering the total bonus & cash, within 30 days otherwise the bonus will be removed. Terms apply
  • 18+ Minimum deposit £20. Bonus spins must be used within 72 hours. Bonus funds are 100% match up to £300 with 25 spins on your 1st deposit, 25% match up to £800 with 50 spins on your 2nd deposit, and 50% match up to £400 with 25 spins on your 3rd deposit. Bonus funds are separate to Cash funds, and are subject to 35x wagering the total bonus & cash, within 30 days otherwise the bonus will be removed. Terms apply
  • 18+ Minimum deposit £20. Bonus spins must be used within 72 hours. Bonus funds are 100% match up to £300 with 25 spins on your 1st deposit, 25% match up to £800 with 50 spins on your 2nd deposit, and 50% match up to £400 with 25 spins on your 3rd deposit. Bonus funds are separate to Cash funds, and are subject to 35x wagering the total bonus & cash, within 30 days otherwise the bonus will be removed. Terms apply
  • 18+ New players only. Min. deposit £20. Bonus spins must be used within 72 hours. Winnings from Bonus spins credited as bonus (capped at £100). Bonus funds are 100% match up to £300 and 50 bonus spins 1st deposit, 40% match up to £1000 and 20 bonus spins on 2nd deposit, and 80% match up to £500 and 40 bonus spins 3rd deposit. Bonus funds are separate to Cash funds, and are subject to 35x wagering the total bonus & cash within 30 days, unused bonus funds will be removed. Terms apply
  • 18+. New players only. 1 bonus offer per player. Min. deposit £20. Max bonus bet £5. Extra spins on selected games only- must be used within 72 hours. Winnings from Bonus spins credited as bonus funds and capped at £20. Bonus funds expire in 30 days, unused bonus shall be removed. Bonus funds are 100% match up to £500 + 30 extra spins on 1st deposit, 25% match up to £800 + 25 extra spins on 2nd deposit, and 50% match up to £200 + 50 extra spins on 3rd 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. Terms apply. BeGambleAware.org.
  • 18+ New players only. Min. deposit £20. Bonus spins must be used within 72 hours. Winnings from Bonus spins credited as bonus (capped at £100). Bonus funds are 100% match up to £300 and 50 bonus spins 1st deposit, 40% match up to £1000 and 20 bonus spins on 2nd deposit, and 80% match up to £500 and 40 bonus spins 3rd deposit. Bonus funds are separate to Cash funds, and are subject to 35x wagering the total bonus & cash within 30 days, unused bonus funds will be removed. Terms apply
  • 18+ New players only. Min. deposit £20. Bonus spins must be used within 72 hours. Winnings from Bonus spins credited as bonus (capped at £100). Bonus funds are 100% match up to £300 and 50 bonus spins 1st deposit, 40% match up to £1000 and 20 bonus spins on 2nd deposit, and 80% match up to £500 and 40 bonus spins 3rd deposit. Bonus funds are separate to Cash funds, and are subject to 35x wagering the total bonus & cash within 30 days, unused bonus funds will be removed. Terms apply
  • 18+. New players only. 1 bonus offer per player. Min. deposit £20. Max bonus bet £5. Extra spins on selected games only- must be used within 72 hours. Winnings from Bonus spins credited as bonus funds and capped at £20. Bonus funds expire in 30 days, unused bonus shall be removed. Bonus funds are 100% match up to £500 + 30 extra spins on 1st deposit, 25% match up to £800 + 25 extra spins on 2nd deposit, and 50% match up to £200 + 50 extra spins on 3rd 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. Terms apply. BeGambleAware.org.
  • 18+. New players only. 1 bonus offer per player. Min. deposit £20. Max bonus bet £5. Extra spins on selected games only- must be used within 72 hours. Winnings from Bonus spins credited as bonus funds and capped at £20. Bonus funds expire in 30 days, unused bonus shall be removed. Bonus funds are 100% match up to £500 + 30 extra spins on 1st deposit, 25% match up to £800 + 25 extra spins on 2nd deposit, and 50% match up to £200 + 50 extra spins on 3rd 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. Terms apply. BeGambleAware.org.
  • New players only. Min deposit £20. Bonus spins winnings are credited in form of bonus funds and are capped at £50. Bonus funds are subject to 35x wagering the total of deposit + bonus funds. Once claimed, funds must be used within 30 days, spins within 10 days. Terms apply. BeGambleAware.org
  • First Deposit Only. Min. deposit: £10, max. Bonus £50. Maximum amount of Free Spins is 50. 50 Free Spins can be claimed through the Daily Picks section, 10 each day for the relevant game. Unclaimed spins will be lost. WR of 30x Deposit + Bonus amount and 60x Free Spin winnings amount (only Slots count) within 30 days. Spins must be used and/or Bonus must be claimed before using deposited funds. Bonus Policy Applies.
  • 18+. New players only. 1 bonus offer per player. 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. Bonus funds are 100% match up to £500 on your 1st deposit, 25% match up to £1000 on your 2nd deposit, and 50% match up to £500 on your 3rd 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. Terms apply. BeGambleAware.org
  • 18+. New players only. 1 bonus offer per player. 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. Bonus funds are 100% match up to £500 on your 1st deposit, 25% match up to £1000 on your 2nd deposit, and 50% match up to £500 on your 3rd 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. Terms apply. BeGambleAware.org
  • 18+. New players only. 1 bonus offer per player. 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. Bonus funds are 100% match up to £500 on your 1st deposit, 25% match up to £1000 on your 2nd deposit, and 50% match up to £500 on your 3rd 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. Terms apply. BeGambleAware.org
  • Casimba

    Casimba

    35x
    Turnover
    £0
    Min Dep
    9.0
    18+. New players only. 1 bonus offer per player. 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. Bonus funds are 100% match up to £500 on your 1st deposit, 25% match up to £1000 on your 2nd deposit, and 50% match up to £500 on your 3rd 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. Terms apply. BeGambleAware.org
  • New customers only. Min £10 dep. Neteller/Skrill excl. Max bonus £100. Wagering 40x on bonus amount within 30 days. Bonus max bet £5. Spins paid 10 per day and valid for 24 hours. Game weighting and T&C apply.
  • PlayOJO Casino

    PlayOJO Casino

    0x
    Turnover
    £10
    Min Dep
    8.3
    18+ | First time depositors only. Min. deposit £10. Maximum amount of Free Spins is 50. Free Spins valued at £0.10 per spin, in Book of Dead. Excluding new players in Northern Ireland. OJO's Reward and Game Play Policy Applies.
  • Thor Slots Casino

    Thor Slots Casino

    65x
    Turnover
    £10
    Min Dep
    8.2
    Receive a FREE spin of the ‘Mega Reel’ when you make your first deposit. Prizes vary, ranging from Free Spins to Amazon Vouchers. New players only, min dep £10, £8 max win per 10 spins, max bonus conversion £250. Wagering requirements apply.
  • First Deposit Only. Min. deposit: £10, max. Bonus £50. Game: Shangri La, Spin Value: £0.20, Max Extra Spins:15. WR of 30x Deposit + Bonus amount and 60x Spin winnings amount (only Slots count) within 30 days. Max bet is 10% (min £0.10) of the spin winnings and bonus amount or £5 (lowest amount applies). Extra Spins must be used before deposited funds. First Deposit/Welcome Bonus can only be claimed once every 72 hours across all Casinos. Bonus Policy applies.
  • LunaCasino

    LunaCasino

    60x
    Turnover
    £10
    Min Dep
    6.9
    First Deposit Only. Min. deposit: £10. Game: The Reel Deal, Spin Value: £0.10, Max Free Spins: 100 WR 60x free spin winnings amount (only Slots count) within 30 days. Max bet is 10% (min £0.10) of the free spin winnings amount or £5 (lowest amount applies). Free Spins must be used before deposited funds. First Deposit/Welcome Bonus can only be claimed once every 72 hours across all Casinos. Bonus Policy applies.
  • Ahti Games Casino

    Ahti Games Casino

    60x
    Turnover
    €10
    Min Dep
    6.6
    First Deposit Only. Min. deposit: £10. Game: Book of Dead, Spin Value: £0.50, Max Spins: 50. WR 60x spin winnings amount (only Slots count) within 30 days. Max bet is 10% (min £0.10) of the spin winnings amount or £5 (lowest amount applies). Spins must be used before deposited funds. First Deposit/Welcome Bonus can only be claimed once every 72 hours across all Casinos. Bonus Policy applies.
  • EU Casino

    EU Casino

    60x
    Turnover
    £10
    Min Dep
    6.5
    First Deposit Only. Min eposit: £10. Game: Spina Colada, Spin Value: £1. WR 60x spin winnings amount (only Slots count) within 30 days. Max bet is 10% (min £0.10) of the spin winnings amount or £5 (lowest amount applies). Extra Spins must be used before deposited funds. First Deposit/Welcome Bonus can only be claimed once every 72 hours across all Casinos. Bonus Policy applies.
  • PartyCasino

    PartyCasino

    10x
    Turnover
    £10
    Min Dep
    6.2
    18+. New depositors only. UK residents only. Minimum deposit £10. Free Spins are valid only on Starburst and expire in 7 days. Excludes deposits made via Skrill, Entropay and Neteller.
  • LuckyNiki Casino

    LuckyNiki Casino

    60x
    Turnover
    £10
    Min Dep
    5.5
    First Deposit Only. Min. deposit: £10. Game: Ninja Master, Spin Value: £0.2, Max Free Spins:25. WR 60x Free spin winnings amount (only Slots count) within 30 days. Max bet is 10% (min £0.10) of the Free spin winnings amount or £5 (lowest amount applies). Free Spins must be used before deposited funds. First Deposit/Welcome Bonus can only be claimed once every 72 hours across all Casinos. Bonus Policy applies.

Definitions of a Slots Bonus

Free Spins is the name most gamblers associate with UK slots bonuses, but as online casinos have been under fire for misleading their customers things are slowly changing to better reflect what we actually get. Bonus Spins and Extra Spins are some of the names that has popped up, and also do so in our bonus lists.

To make things clear, throughout this page we will use the term “Free Spins” in the loosest sense, simply meaning a bonus consisting of free game rounds in an online slot.

Free to play but what about the winnings?

The main controversy has never been whether the game round was free or not, it has always been free to play, the criticism regards how winnings from the free rounds are treated, but first things first. Before we get into the nitty gritty, let us go through the components of a slots bonus and see how they differ from say a casino match bonus.

  • Slots bonuses always come with a predetermined wager level for each spin. The bet size of each spin is typically set to the lowest stake allowed in the video slot it is awarded. There exceptions are but in general, you can assume each spin awarded is valued at £0.10-£0.20. Spins that are more valuable do exist but are less common.
  • Slots Bonuses can be tied to one specific game or a collection of selected games. If the latter, it is usually possible to exit one game and play the remaining free spins in another game that is part of the game collection.
  • Slots bonuses are always free to play, but beware of how winnings are treated. Wager free spins is the best type of UK slots bonus, with all winnings from the spins credited as real money. To treat winnings as bonus money and apply a wagering requirement the sum is very common.
  • Slots bonuses usually come with an expiry date, make sure to use free spins before this.

Common Free Spins Slots

18+ New Customers Only - T&C Apply - Play Responsibly

The Many Names of Slots Bonuses

There are two distinct categories of slots bonuses; one that treats winnings as real cash, and one that treats it as bonus money and are subject to wagering requirements. “Free Spins” was for a long time what everyone called it, no matter the above differences. Many felt tricked by the naming when they found out that they could not withdraw their wins, and consumer rights groups globally has also criticised the naming convention.

Keep your eyes out for Big, Super, and MEGA Spins for more exciting free rounds!

Some casinos has in light of the above tried to clean up their act and in the meantime also used the opportunity to set themselves apart from the crowd and not be just another brand offer “free spins”. Hence, many different names has sprung up, but the two categories we mentioned in the introduction are still valid, although with a grey area where one needs to be extra cautious.

What Casinos call their Free Spins

This list is in no way complete, and there are casino sites that will try to take advantage of names with a good reputation, but in general, it looks something like this.

  • Slots Bonuses without Wagering Requirements: Wager Free Spins, Cash Spins, Real Spins
  • Grey area: Free Spins
  • Slots Bonuses with Wagering Requirements: Spins, Extra Spins, Bonus Spins

Note that here at topcasinosites.co.uk we always try to point out the difference and designate free to mean wager free. We also display it in all our reviews.

Wager Free Spins

18+ New Customers Only - T&C Apply - Play Responsibly

Pros and Cons of a Slots Bonus

Slots bonuses are by far the most common type of casino bonus found at online casinos. The main draw of them is that players get to try out a certain game for free but still be able to win real money (or bonus money). In the case of no-deposit free spins, they will give new players a chance to see the casino in action before parting with any cash. Slots bonuses are also a great way to discover games that one might otherwise overlook. Slots bonuses have their limitations though.

Compared to bonuses where players receive credits to spend freely, there are some obvious drawbacks of slots bonuses:

  • Players are restricted in their choice of game
  • The value of each free spin is usually small

If a player faces a choice between a bonus payed out as money or as spins, the former will always be much more flexible. With bonus money, the player can play most slots that are available at the casino and often to wagers that far exceed the lowest minimum (although often capped at £5 per spin). Slots and spins bonuses are fun but do not expect to earn any substantial money off them, unless you can find the premium variety...

Bigger Spins – Super- and Mega-Sized

Most slots bonuses award free spins predefined with the slots’ lowest possible wager level. Something that high rollers will find very unattractive and unworthy of their time even. For good reason: If a decent win is close to what you usually bet per spin a lot of excitement disappears. To make slots bonuses more interesting they fortunately come in bigger sizes. These more valuable spins work just like any other slots bonus but with each spin played with a bigger bet.

  • Big Spins and Super Spins (usually used interchangeably) are typically worth £1 each.
  • Mega Spins can be worth anything from £2 up to £10 each, although it rarely goes over the 10 mark.

What to call these more valuable spins is up to the casino and what is Mega for some might be Super for another – but they will always be worth more than £0.20! Since a higher wager comes with greater risk for the casino these free rounds are rare, usually only reserved for VIP players, as contest prizes, or rewarded when making large deposits – especially if we are talking free spins without wagering requirement.

Size matters but there is more

Let us examine a classic slots bonus: 100 Free Spins in Starburst. Although free spins are set to the lowest possible wager level, they will still have all possible paylines enabled in order to give a good impression of the slot. This means that a typical Starburst free spin is worth £0.10. With 100 of them, we get a total value of £10, but… The theoretical return for the game is 96.1% so we are likely to have something just north of £9.6 remaining after the reels have stopped spinning.

Free Spins in Book of Dead

18+ New Customers Only - T&C Apply - Play Responsibly

  • First Deposit Only. Min. deposit: £10. Game: Book of Dead, Spin Value: £0.50, Max Spins: 50. WR 60x spin winnings amount (only Slots count) within 30 days. Max bet is 10% (min £0.10) of the spin winnings amount or £5 (lowest amount applies). Spins must be used before deposited funds. First Deposit/Welcome Bonus can only be claimed once every 72 hours across all Casinos. Bonus Policy applies.
  • First Deposit Only. Min. deposit: £10, max. Bonus £50. Game: Rich Wilde and the Book of Dead, Spin Value: £0.10, Max Extra Spins:50. WR of 30x Deposit + Bonus amount and 60x Extra Spin winnings amount (only Slots count) within 30 days. Max bet is 10% (min £0.10) of the extra spin winnings and bonus amount or £5 (lowest amount applies). Extra Spins must be used before deposited funds. First Deposit/Welcome Bonus can only be claimed once every 72 hours across all Casinos. Bonus Policy Applies.

Frequently Asked Questions about Slots Bonuses

Always make sure to read the T&C of Slots Bonuses as some casinos can be a bit misleading in their usage of the term. The main point to look for is the wagering requirement and expiry date.

What do I need to consider before accepting a slots bonus?

I was promised a Slots Bonus, where are my Free Spins?

How do Wagering Requirements work for slots bonuses?

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