Best Slots Bonuses 2021

Find the best slots bonuses from over 35 UK online casinos

Compare the best slot sign up offers from our slots welcome bonus table. Find the top UK casinos for deposit bonus slots, free spins and other promotions for December 2021.


  • PlayOJO Casino


    UK slots bonusUKGC Licence + UK players
    3,000+ games
    No wagering free spins slots bonus
    PlayOJO online slots bonus
    Get 50 Free Spins on your first deposit
    + 30 Extra Free Spins
    CLAIM HERE
    18+, new customers only, T&Cs apply, 0x wagering, min deposit £10. BeGambleAware.org #AD
  • Mayfair Casino


    UKGC Licence + UK players
    400+ games
    Deposit 10 bonus slots offer
    Mayfair Casino London
    Up to £400 Bonus
    + 175 Free Spins
    CLAIM HERE
    18+, new customers only, Over first 3 deposits, T&Cs apply, 30x wagering, min deposit £10. BeGambleAware.org #AD
  • Casiplay Casino


    UKGC Licence + UK players
    500+ games
    4 deposits slots promotion with free spins
    Casiplay
    UK Exclusive
    Up to £100 Bonus
    + 150 Extra Spins
    CLAIM HERE
    18+, new customers only, T&Cs apply, wagering bonus 35x, min deposit £20. BeGambleAware.org #AD

  • Cloud Casino


    UKGC Licence + UK players
    600+ games
    3 deposit slot bonus including free spins
    Cloud Casino
    Up to £500 Bonus
    + 150 Spins on Selected Slots
    CLAIM HERE
    18+, new customers only, 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. BeGambleAware.org #AD
  • Karamba Casino


    UKGC Licence + UK players
    500+ games
    First deposit welcome bonus for slots players
    Karamba Casino
    100% Bonus up to £50
    + 100 Spins
    CLAIM HERE
    18+, new customers only, T&Cs apply, 35x wagering, min deposit £10. BeGambleAware.org #AD
  • 888 Casino


    UKGC Licence + UK players
    1,000+ games
    Welcome bonus slots free play plus a first deposit match
    888 Casino
    £88 Free No Deposit
    + 100% up to £100
    CLAIM HERE
    18+, new customers only, T&Cs apply, variable wagering, min deposit £20. BeGambleAware.org #AD

  • Play Casino Games


    UK slots bonusUKGC Licence + UK players
    400+ games
    VIP Room
    playcasinogames online slots bonus
    Up to £1000 Welcome Package!
    Plus Free Spins
    CLAIM HERE
    New players only. Wagering occurs from real balance first. 50x wagering the bonus or any winnings generated from free spins. 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/ free spins valid for 7 days from issue. Max conversion: 3 times the bonus amount or from free spins: $/£/€ 20. Excluded Skrill deposits. Full T&Cs apply. BeGambleAware.org #AD
  • All British Casino


    UKGC Licence + UK players
    600+ games
    Slots sign up bonus
    All British Casino
    100% up to £100
    + Always 10% Cashback
    CLAIM HERE
    New UK Players only. 18+. Maximum bonus is 100% up to £100. Min deposit is £20. No max cash out. Wagering is 35x bonus. Maximum bet while playing with a bonus is £5. Eligibility is restricted for suspected abuse. Cashback is cash with no restrictions. Skrill & Neteller deposits excluded. Cashback applies to deposits where no bonus is included. Full t&c’s apply BeGambleAware.org #AD
  • Spela


    UKGC Licence + UK players
    1300+ games
    Slots sign up bonus
    Spela UK Casino
    100% up to £100
    + 100 Free Spins
    CLAIM HERE
    18+, new customers only, Full T&C’s apply, £10 min deposit. £5 max bet using bonus. 60x (40x referred player) wagering applies. Bonus valid for 14 days. 20 Spins will be credited instantly upon qualifying deposit + then 20 per day for 4 days on Starburst. Free Spins valid for 72 hours from credit. Max Free Spins winnings £100. Ewallets excluded. – BeGambleAware.org #AD

  • Betfred Casino


    UKGC Licence + UK players
    750+ games
    UK slots deposit bonus
    Betfred Casino
    Stake £10 Get 50 Free Spins
    Get 50 Free Spins
    CLAIM HERE
    18+, New Casino customers only. £10 min transfer & stake on slots within 7 days. Min 5 game rounds. Max 50 Free Spins on selected games, credited within 48 hours of qualifying. £0.10 per spin. Free Spins expire after 7 days. E-Wallet & Pre-Paid card restrictions apply. SMS validation may apply. Full T&Cs apply. BeGambleAware.org #AD
  • Winners Club


    UKGC Licence + UK players
    800 + games
    Daily Spins
    Winners Club Casino
    Up to £500
    + Up to 150 Free Spins
    CLAIM HERE
    Over 18s only. New customers only. First three deposits only. Min Deposit £10. max total bonus £500 and 150 spins. 30x bonus wagering (deposit + bonus), 30x spins wagering, 4x conversion. Selected slots only. T&Cs apply.. BeGambleAware.org #AD
  • Watchmyspins


    UKGC License
    Live dealers
    Top games providers
    Watch my spin UK
    50% up to £100
    + 100 Free Spins + 2 Extra Bonuses
    CLAIM HERE
    18+, new customers only, min deposit £10, 4x conversion, 40x wagering (bonus and spins), T&Cs apply. BeGambleAware.org #AD

UK Slots Bonus Table – Slotsquad Top 10 Rankings

Every month we put together a list of the 10 best slot bonus welcome offers for UK players who make their first deposit. There are three main things that customers want from their online casinos: fair play, excellent games content and a sign up bonus.

We’ve used these same criteria to select the best online casino bonuses in the UK – if you like playing slots!

Rank Casino Slots Bonus Wagering Requirements Claim Offer
1 Play OJO 50 free spins on 1st deposit + 30 extra free spins 0x visit casino
2 Mayfair London Up to £400 + 175 free spins 30x visit casino
3 Casiplay Up to £800 + 100 extra spins 35x visit casino
4 Cloud Casino Up to £500 + 150 free spins 40x visit casino
5 Karamba 100% slots bonus up to £50 + 100 spins 35x visit casino
6 888 Casino £88 free no deposit + 100% up to £100 50x visit casino
7 Play Casino Games Up to £1000 Welcome Package + Free spins 50x visit casino
8 All British Casino 100% up to £100 + always 10% cashback 35x visit casino
9 Spela Casino 100% up to £100 + 100 spins Variable visit casino
10 Betfred Stake £10 Get 50 Free Spins + 50 Free Spins 30x visit casino
  • Casino Planet


    UK Licence
    1300+ games
    Deposit bonus + free spins
    Casino Plant
    100% up to £100
    + 200 Free Spins
    CLAIM HERE
    18+, new customers only, Full T&C’s apply, £10 min deposit. £30 max bet using bonus. 40x wagering applies. Bonus valid for 14 days. Skrill + Neteller excluded. www.begambleaware.org #AD
  • Vegas Hero


    UKGC Licence + UK players
    HD live casino
    New slot games added weekly
    Vegas Hero Casino
    100% up to £100
    + 50 Free Spins
    CLAIM HERE
    New players Only. £10 min deposit. £5 max bet using bonus. 40 x wagering applies. Bonus valid for 14 days. 10 Spins on pre-selected games will be credited instantly + then 10 per day for 4 days. Free Spins valid for 72 hours from credit. Max Free Spins winnings £100. E-Wallets excluded. Always refer to Bonus Terms, Full t&c’s apply. BeGambleAware.org #AD
  • Genesis Casino


    UKGC Licence + UK players
    Regular new games content
    Excellent user-interface
    Genesis Casino
    100% up to £100
    + 300 Free Spins
    CLAIM HERE
    18+ Full T&C’s apply. New players Only. £10 min deposit. £5 max bet using bonus. 40x wagering applies. Bonus valid for 14 days. 30 Spins will be credited instantly upon qualifying deposit + then 30 per day for 9 days on Starburst. Free Spins valid for 72 hours from credit. Max Free Spins winnings £100. Ewallets excluded. – www.begambleaware.org #AD
  • Jackpot Paradise


    UKGC Licence + UK players
    500+ games
    Slots deposit bonus
    Jackpot Paradise Casino
    Min deposit: £10
    1st Deposit Offer
    100% up to £200
    CLAIM HERE
    18+, 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 t&c’s apply. BeGambleAware.org #AD
  • Mr Green Casino


    UKGC Licence + UK players
    750+ games
    First deposit match bonus
    Mr Green Casino
    100% up to £100
    + 100 bonus spins on Lucky Mr Green
    CLAIM HERE
    18+. Play Safe. New UK customers only. Opt in required. 1x per customer. Min. £10 deposit. 1st deposit only. Selected games only. Max. Bonus £100 with 15x wagering and 100 Free Spins at £0.20/spin on Lucky Mr Green with 15x Wagering. Free Spins and Bonus credited once deposit amount has been wagered on slots. Bonus and Free Spins expire 7 days after issue. Game weighting, game, country, currency, player restrictions and terms apply. BeGambleAware.org #AD
  • MrQ Casino


    UKGC Licence + UK players
    750+ games
    Free play slots with welcome bonus
    MrQ Casino
    Min deposit: £10
    Deposit £10 Get 30 Free Spins
    Promo Code: V30
    CLAIM HERE
    18+, new customers only, T&Cs apply, First deposit only. Min deposit & spend £10. Max 30 spins on VALHALLA at 25p per spin. Spins credited upon spend of £10. BeGambleAware.org #AD

  • Casino Lab


    UKGC Licence + UK players
    £16.9 Million in Jackpots
    1300+ games
    Casino Lab
    Min deposit: £10
    100% up to £100
    + 300 Free Spins
    CLAIM HERE
    18+ Full T&C’s apply. New players only. £10 min deposit. £30 max bonus. 40X wagering applies. bonus valid for 14 days. SKRILL + NETELLER EXCLUDED. WWW.BEGAMBLEAWARE.ORG #AD
  • Pots of Luck


    UKGC Licence + UK players
    380+ games
    Bouns Spins
    Pots of Luck Casino
    Min deposit: £10
    3-Step Bonus Match and Spins
    Up £500 Welcome Offer & 150 Bonus Spins On Selected Slots
    CLAIM HERE
    18+, new customers only, Full T&Cs apply, min deposit £10. First 3 deposit only. Min deposit £10. Max total bonus £500 & 150 spins. 30x wagering(dep+bonus). 30x on spins, 4x conversion, bonus and spins valid on selected slots. BeGambleAware.org #AD
  • Spin and Win


    UKGC Licence + UK players
    550+ games
    Casino slots sign up bonus
    Spin and Win Casino
    Min deposit: £20
    100% Match Bonus up to £250
    + Up to 100 Free Spins
    CLAIM HERE
    Min 1st deposit £20. Max bonus £250. Bonus & wins playable on Selected games only. 40xWR. Max convertible to real 5x bonus amount. Bonus valid for 7 days. Free Spin on the wheel for 10 – 100 spins valid for 24 hrs. Spins & wins playable on NetEnt Slots (excl. progressives). 30WR. Max win £20 from wheel spins. T&Cs apply. #AD

  • Masked Singer Games


    UK slots bonusUKGC Licence + UK players
    2,000+ games
    Official masked singer online casino
    Masked Singer Games UK Bonus
    Deposit and play Prize Twister
    Win Free Spins or up to £25K Cash
    CLAIM HERE
    Min deposit: £10. Game: Masked Singer UK, Spin Value: £0.10. The Prize Twister awards a random prize of either cash or free spins. 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). Spins must be used and/or Bonus must be claimed before using deposited funds. Bonus Policy applies. www.begambleaware.org #AD
  • Hippozino Casino


    UKGC Licence + UK players
    850+ games
    Slots welcome bonus
    Hippozino Casino
    Min deposit: £10
    Welcome Bonus up to £100
    + 20 Free Spins
    CLAIM HERE
    18+, new customers only, T&Cs apply, 50x wagering, min deposit £10. BeGambleAware.org #AD
  • Grosvenor


    UKGC Licence + UK players
    550+ games
    UK slots offer including 5 x wagering
    Grosvenor Casino
    Min deposit: £20
    Deposit £20 play with £50
    Just 5 x wagering requirements
    CLAIM HERE
    18+, new customers only, T&Cs apply, 5x wagering, min deposit £20.1st deposit only, some games have different wagering contributions, some games exclude bonus play. BeGambleAware.org #AD
  • Griffon Casino


    UKGC Licence + UK players
    Free spins welcome bonus
    Top providers
    New Casino Griffon
    Min deposit: £20
    3 Deposit Bonuses
    200 Bonus Spins
    CLAIM HERE
    18+. Welcome bonus: new UK depositing players only. 200 spins require 3 deposits of min. ‎£20 each and are issued as follows: 50 on 1st deposit, 50 on 2nd deposit and 100 on 3rd deposit. Spins are issued on selected games. Winnings from spins are bonus with wagering requirements 35x. Spins expire after 24 hours. Bonus expires after 21 days. Play responsibly, www.begambleaware.org. T&Cs apply. www.begambleaware.org #AD
  • Kerching


    UK slots bonusUKGC Licence + UK players
    Live dealers
    Top game providers
    Kerching online slots bonus
    Up to £500 welcome offer
    + 100 free spins on Cleopatra
    CLAIM HERE
    18+, new customers only, T&Cs apply, 30x wagering, min deposit £10. BeGambleAware.org #AD
  • Temple Slots Casino


    UK slots bonusUKGC Licence + UK players
    3 deposit bonuses
    Daily free spins
    Temple Slots online slots bonus
    Up to £150 in bonus offers
    + up to 150 spins on Gonzos Quest
    CLAIM HERE
    18+, new customers only, T&Cs apply, 50x wagering, min deposit £10 (£20 3rd deposit). BeGambleAware.org #AD
  • Secret Slots


    UK slots bonusUKGC Licence + UK players
    1,000+ games
    Daily free spins
    Secret Slots online slots bonus
    200% Bonus up to £30!
    + 20 Free Spins
    CLAIM HERE
    First-time depositors only (18+ UK exc. NI). Min Deposit £10. Max Offer 200% Bonus up to £30 & 20 Free Spins (on Luxor). Free Spins winnings are capped at £2 and credited as bonus funds with 40x wagering. Bonus funds must be wagered 60x before withdrawal. Free Spins expire after 7 days. Slots Bonus win cap: £100 + the initial bonus amount. Promo code: BOOTS. We reserve the right to deny promotional offers based on abusive bonus activity across sites operated by the Company. Deposit balance available for withdrawal at any time (UK only). General withdrawal restrictions & full T&Cs apply. Valid until 31.12.2021 BeGambleAware.org #AD
  • Deluxino


    UK slots bonusUKGC Licence + UK players
    300+ games
    Up to 10% cash back
    Deluxino online slots bonus
    25 Free Spins
    Promo code: DELUXINO
    CLAIM HERE
    First-time depositors only (18+ UK exc NI). Min Deposit: £10. Max Offer: 25 Free Spins [on a game of our choice]. Promo code: DELUXINO. Free Spins Winnings will be capped at £2.50 and credited as bonus funds. 40x wagering applies to bonus funds. Games Bonus winnings are capped at £100 + original bonus amount. Games bonus funds may only be used on selected games only. Unused Free Spins expire after 7 days. Wagering requirements vary by game. We reserve the right to deny bonuses based on abusive bonus activity across sites operated by the Company. Deposit balance is available for withdrawal at any time (UK only). General withdrawal restrictions & full T&Cs apply. Valid until further notice.BeGambleAware.org #AD
  • Arcade Spins


    UK slots bonusUKGC Licence + UK players
    500+ games
    Regular new games content
    Arcade spins bonus
    00% Bonus + 50 Free Spins!
    Promo code: BONUS50
    CLAIM HERE
    First-time depositors only (18+ UK exc NI). Min Deposit £10. Max Offer 100% Bonus up to £10 & 50 Free Spins [Game of our Choice]. Free Spins winnings are capped at £5.00 and credited as bonus funds with 40x wagering. Bonus funds must be wagered 60x before withdrawal. Slots Bonus funds winnings are capped at £100 + original bonus amount. Free Spins expire after 7 days. Promo code: BONUS50. We reserve the right to deny promotional offers based on abusive bonus activity across sites operated by the Company. Deposit balance available for withdrawal at any time (UK only). General withdrawal restrictions & full T&Cs apply. Valid until 31.12.2021. BeGambleAware.org #AD
  • NY Spins


    UK slots bonusUKGC Licence + UK players
    1,000+ games
    Live Casino
    NYSpins online slots bonus
    100% up to £50
    + 50 Real Money Free Spins
    CLAIM HERE
    18+, new customers only, T&Cs apply, Max £50 bonus. Min deposit: £20. Wagering requirement 100% match bonus: 30 times sum of deposit + bonus. Winnings from Free Spins are credited as Real Money. BeGambleAware.org #AD
  • Jazzy Spins


    UK slots bonusUKGC Licence + UK players
    1,000+ games
    VIP Jazz Club
    Jazzy Spins online slots bonus
    £5 Free Bonus on Registration
    110% up to £50 & 50 Free Spins. on 1st Deposit
    CLAIM HERE
    Registration UK players only (+18). £5 Games Bonus. Must be wagered x40. Valid Debit Card Registration Required To Activate £5 Games Bonus. Games Bonus wins cap: £100 + the initial bonus amount. Wagering req. vary by game. First-time depositors only (+18). Valid until further notice. Min Deposit: £10. Max Games Bonus: £50. To withdraw games bonus & related wins, wager x40 the amount of your bonus. 50Spins (FS). FS are valid on a specific game for 7 days. FS wins cap: £5. FS wins are granted in games bonus after all FS are used and must be wagered x40. Games Bonus wins cap: £100 + the initial bonus amount. Wagering req. vary by game. UK only. Your deposit balance (defined as Transaction Balance under our Withdrawal Policy) is available for WITHDRAWAL at any time. Country restrictions apply. T&CS APPLY BeGambleAware.org #AD
  • Casushi


    UK slots bonusUKGC Licence + UK players
    500+ games
    Daily Offers
    Casushi online slots bonus
    100% up to £50
    + 50 Free Spins
    CLAIM HERE
    18+ new customers only, 100% bonus on first deposit up to £50 plus 50 Bonus spins (30 spins on day 1, 10 on day 2, 10 on day 3 for Rich Wilde and the Book of Dead slot only. Min first deposit £20. Max bonus £50. Max bonus bet £5. Max bonus cash-out £250. 40x wagering requirements. Bonus expiry 30 days. Bonus spins expiry 2 days. Game restrictions apply. Further Terms Apply. BeGambleAware.org #AD
  • Slot Crazy


    UK slots bonusUKGC Licence + UK players
    442 + games
    Loyalty Cashback
    Slot Carzy online slots bonus
    100% up to £100
    + 100 Free Spins
    CLAIM HERE
    18+, new customers only, T&Cs apply, wagering bonus 30x, min deposit £10. BeGambleAware.org #AD
  • 32 Red Casino


    UK slots bonusUKGC Licence + UK players
    550 + games
    My Red Rewards
    32 Red slots bonus
    Get a 150% Bonus
    Up to £150
    CLAIM HERE
    18+, new customers only, T&Cs apply, 50x wagering, min deposit £10. BeGambleAware.org #AD
  • Costa Games


    UK slots bonusUKGC Licence + UK players
    442 + games
    Triple Reward Days
    Costa Games slots bonus
    Deposit £20
    Get 200% Bonus up to £40
    CLAIM HERE
    18+, new customers only, T&Cs apply, wagering bonus 40x, min deposit £10. BeGambleAware.org #AD
  • Playzee Casino


    UK slots bonusUKGC Licence + UK players
    500 + games
    Zee Points
    Playzee online slots
    100% up to £300 + 100 spins
    + 500 zee points
    CLAIM HERE
    18+. New players only. Min Deposit £20. Max Bonus Bet £5. Winnings from spins capped at £50. 100 Zee Spins valid on Starburst (first 10 credited immediately upon first deposit; rest credited at 07:00 GMT at 10/day). Spins must be used by 23:59 GMT of the day on which they are credited to player account, any unused shall be removed. Bonus funds must be used within 30 days. Bonus funds are separate to Cash funds, and subject to 35x wagering (bonus + cash). Full terms apply. BeGambleAware.org #AD
  • O’Reels


    UK slots bonusUKGC Licence + UK players
    500 + games
    Loyalty Cashback
    OReels casino bonus
    50 Free Spins on Starburst on 1st Deposit
    + 50 Additional Free Spins over next 2 Deposits
    CLAIM HERE
    New players only. Wagering occurs from real balance first. 5x wagering the bonus or any winnings generated from free spins, contribution may vary per game. The wagering requirement is calculated on bonus bets only. Free spins valid for 7 days from issue. Minimum deposit £/$/€20. Max conversion: 3 times the bonus amount or from free spins: $/£/€ 20. Excluded Skrill deposits. Full Terms apply. BeGambleAware.org #AD
  • Voodoo Dreams


    UK slots bonusUKGC Licence + UK players
    500+ games
    Collect Points for Rewards
    Voodoo Dreams Casino
    100% bonus up to £50
    + 50 Real Money Free Spins on Book of Dead
    CLAIM HERE
    18+ new players only. Maximum bonus: £50. Minimum deposit: £20. Wagering requirement 100% match bonus: 30 times sum of deposit + bonus. Winnings from Free Spins are wagering free.T&Cs apply. BeGambleAware.org #AD

It’s free to sign up at the most online casinos. But if you deposit, you want the best welcome bonuses available.

Let us share with you the top casinos for slot bonuses and deposit matches. They are the trusted brands where UK players prefer to play and stay, thanks to loyal promotions that continue long after registration. Each of the following websites is free to sign-up and join. We’ve included the details of the best welcome bonuses and the minimum deposit needed to trigger them. Want to know more? Just scroll down further to see how casino bonuses work.

Our guide to finding the best slot bonus in 2021

Find out what to look for when comparing online slot bonuses for UK players.

Ditching your online casino for a new brand with so much competition is easy, but you’ll want quality casinos when you make the switch. That means UK slot sites with fresh content, new games and promotions. Trusted names with strong reputations, new casinos working hard to make their names and everything in between.

But how do you choose right one?

Firstly, let’s look at some of the ways they compete for new registrations in 2021.

  • New games
  • Platform content
  • Slots promotions
  • Easy to use
  • Free play or demo slots
  • Cashier options
  • Responsible gaming tools
  • Customer support
  • Sign up bonus / first deposit bonus / multiple deposit bonuses
  • Free spins

Now that we’ve got our list, let’s look at one of them more carefully.

One of the main ways online casinos compete for new players is by offering a slots welcome bonus – a promotion that uses bonus money, free spins or a combination of both on a single game or multiple slot games.

From new slot sites with a free sign up bonus to free spins on your first deposit, there’s a huge variety of slots promotions that pack the UK regulated market. And while they range from identical to completely unique, each offer comes with terms and conditions that we can use for ranking purposes.

So whether you’re completely new to slot games or a seasoned spinner, we’re here to help you find the best slots sign up bonus – be it for free or on your first deposit.

Free No Deposit Vs Slots Deposit Bonus

UK slots bonuses can be divided into three broad camps: free spins, free play, and premium play that you must deposit for (usually known as a deposit match or first deposit bonuses).

The difference is simple, the first two types of bonus give you something when you sign up with no deposit needed; the latter requires a deposit.

But which is better, free play no deposit or playing slots with a deposit bonus?

Free

The first and most obvious consideration is your budget. If you’re playing for real money, then there’s an obvious cost involved. But you’ll get better slot bonuses. On the other hand, free play is more restricted – particularly with rules on how much you can win, what you can play, and often with higher wagering requirements.

Furthermore, don’t forget there’s a maximum withdrawal associated with most if not all no deposit offers – meaning anything over that amount will be taken back by the online casino.

Not Free

With a slots deposit bonus, you’ll often get more freedom with the games you can play, higher winning caps (sometimes no winning caps) and bigger bonuses. While the average deposit match is 100% up to £100, some casinos offer up to 300%, including additional free spins. 

No deposit or deposit? Of course, the answer to this question depends on how you intend to play and how long you intend to stay. If you’re just trying out new casinos with free spins on demo games, then it’s a good idea to sign up (often with no deposit needed) and just test the platform.

Broadly speaking, though, a paid online slots bonus will always triumph over the freebies. Largely down to the extra freedoms (although still subject to wagering requirements) – of which could be rewarding, particularly if you’re playing jackpots or slots with bonuses, in-play features and reel modifiers.

Slots Welcome Bonus Explained

Find out about the different parts, wagering requirements and t&cs that make up all UK casino sign up offers.

Below you can find out how each term and condition works and how they affect you as a player. We’ll look at everything from maximum bonus to free spins value, qualifying payment methods to deposit match percentages – everything that will help you find the best welcome bonus for slots in the UK.

UK slots bonus used by 888 Casino

10 parts of a UK Slots Bonus

Whether it’s 20 free spins on your first deposit or £20 play money with no deposit needed, the 10 main parts that make up an online casino bonus are:

  • First-time depositors only (18+ country restrictions apply)
  • No deposit or minimum deposit details
  • Qualifying payment methods
  • Number of free spins, maximum bonus and percentage of deposit match
  • Claim time
  • Offer expiry
  • Bonus wins and capped information
  • Selected games
  • Wagering requirements
  • Withdrawal restrictions
New customers only

One of the main reasons players look for new slot sites with a free sign up bonus is that casinos market towards new players. While regular slots promotions come later, welcome bonuses come first. Often displayed as first depositors only, new players or new customers – nearly all sign up bonuses are for new members to that casino, not existing customers.

No deposit or minimum deposit only

This one’s straightforward, do you need to deposit or not. As we’ve mentioned earlier, there are pros and cons to both types of bonuses. Look out for phrases like register and deposit to get 10 free spins or sign up now for £10 free with no deposit needed. 

It should be clear that you are paying a premium for the bonus or receiving the bonus for free. It’s also important to know that free doesn’t always mean free; a deposit of £20 for 50 free spins still means you’re paying a premium of £20.

Bonus qualifying payment methods

It’s not uncommon to see restrictions on payment methods when it comes to welcome bonuses. Visa debit cards will almost certainly qualify each time, but digital e-wallets like Skrill and Neteller, in most cases, do not. Always remember to check the t&cs before making your deposit, else you might not get the bonus.

Number of free spins, maximum bonus and percentage of deposit match

Each casino has its own marketing campaign that it uses to attract players to its website. While some UK slots offers are completely unique, others use carbon copies that you’ll find at multiple brands. Either way, this is how online casinos attract your attention with those eye-catching headlines. But with so much competition, cloning and (very rarely) creativity – how do you know which bonus is best?

Generally speaking, the best slot bonus for UK players is one that combines free spins with a first deposit match. This part of the offer is the most important. Before signing up, consider how many free spins, the maximum bonus available and the percentage of any deposit match.

As a good rule of thumb, you should be looking for a high number of free spins with a reasonable free spin value, a low deposit, a high maximum bonus and low wagering requirements. In some cases, you can find bonuses with no wagering requirements whatsoever.

Claim time

Claim time – also known as offer valid, is the amount of time you have to claim your online slots welcome bonus. So if, for example, you had an offer valid for 72hrs in the t&cs, you would lose that bonus if not claimed within the given timeframe. Other examples include time limits on free spins, meaning players must use them within a certain period, with any unused spins being removed from their account afterwards.

Offer expiry

Self-explanatory, like above – use it or lose it.

Yes, when you sign up for any slot game bonus, whether that’s free spins or a 100% deposit match bonus, don’t forget to check the expiry date. Often given in days, this is the amount of time you have before that registration deal disappears. And they do!

It’s easy to get lost in the moment with free play or just generally forgetting that there’s an offer associated with your account.

Bonus wins

So, you want to win using your bonus? Well, firstly, it’s easier said than done. Unless, of course, we’re talking about online slot bonuses with no wagering requirements (more on this later – no wagering is a way of saying you keep every penny that you win). Anyway, back to the other winning.

UK slots players believe that they can win using free spins, bonus money or freeplay – and they can, but there’s a catch. If you’ve ever read the terms and conditions, you might have seen the legal jargon stating wins capped at £10 or bonus wins & max redeemable amount capped at £100; this is normal.

Just be aware that if you’re playing slots with bonus money or using a number of free spins, then any winnings resulting from those freebies will be capped.

Selected games

No one reads the terms and conditions, but they should – it’s essentially a contract between the casino and their customers. Take the hugely popular deposit and get free spins bonus. Just remember that you can’t use those free spins on every single game in the lobby. While each brand is different, they’re all the same when it comes to selected slot games (the slots you can play using your bonus).

Some of the most common promotions and best bonus slot games include Rich Wilde and the Book of Dead, Fluffy Favourites, Starburst and Rainbow Riches. And while it’s not uncommon for casinos to offer between one and several games, some sites let you use your bonus on dozens of slots.

It’s very easy to go straight for the slots sign up bonus, but just know what you can and cannot play!

Wagering requirements

Those sneaky wagering requirements pop up everywhere, although more and more UK casinos are moving towards scrapping these terms and conditions – in favour of no wagering. 

So what’s a wagering requirement?

A wagering requirement is a multiplier that represents the number of times you have to play through a bonus before you can withdraw any winnings. While 0x wagering is possible, most bonuses range between 20x and 50x wagering requirements – the lower, the better for the player.

Withdrawal restrictions

Casinos may restrict withdrawals associated with bonus money and wagering requirements. But they can’t prevent you from:

  • Withdrawing your deposit balance
  • Withdrawal of winnings from wagers made with funds in that deposit balance
  • Withdrawing winnings from any bonus not subject to wagering requirements

When is the best time to sign up for a slots welcome bonus?

There are so many slots promotions out there these days; it can be hard to know where and how to get the best offer. Thankfully, we’ve got tips to help you find the right one, and more importantly, when!

While casino bonuses run all year round, the best time to sign up at new sites is during the months of November, December and January. November and December is self-explanatory with Christmas Casino Promotions, followed closely by New Year Casino Bonuses in January.

As for the time of the month, online slots bonuses can be at their best in the last and the first week for first deposit bonuses and mid-month for regular promotions (following registration). Look out for big game releases too, anything hugely popular will be good for new customer offers.

Don’t rule out new casinos either; some of the best slots sign up offers come when new sites launch their platforms. If a casino is brand new, they’re out to compete in their first six months, meaning better deals as they try to attract new customers and build up player numbers.

10 different types of online slots bonus 

When it comes to slot sites with a welcome bonus, how can you be sure you’re getting it right? If you want to see some examples of how UK casinos promote their products, we’ve put together a list of the most popular sales pitches.

  1. Get 50 free spins on your first deposit with no wagering requirements
  2. 20 free spins with your first deposit, no wagering, no nonsense
  3. Get 50 free spins when you sign up
  4. Up to £100 + 100 extra spins welcome offer
  5. Deposit £50 play with 300 spins on selected slots
  6. 50% bonus match up to £100
  7. Register and deposit now for 25 free spins
  8. 150% up to £150 welcome bonus
  9. Play with £88 free no deposit needed
  10. 100% refund bonus up to £111 plus 100 extra spins

Now that you know what to look for, where to look and when to look – we hope that our guide can help point you in the right direction. If you’re still undecided, then check out our UK casino reviews or the 10 best slots to play online right now! (each with a designated site and bonus).

Or, continue reading!


How first deposit bonuses work at UK casinos

We don’t pull punches at Slotsquad. Too many slot review sites say that deposit bonuses are incredible, amazing and “incredibly amazing”. Do you want us to say that too? Or would you rather we told you how casino deposit bonuses work, and more importantly, why they work.

If a player deposits £100, they play with £200! But remember, £100 is bonus money subject to wagering requirements!

There is nothing free in this world, and that couldn’t be truer than with online casinos.

The Welcome Bonus

The welcome bonus is an important stage of your online casino membership. It’s the first impression that players have of the brand, and also the first hurdle they take when trying to withdraw any future winnings. We’re talking about the first deposit bonus, the multiple deposit bonuses and any other bonus associated with joining an online casino.

So how do casino deposit bonuses work? They work by offering an incentive in return for action, normally adding bonus funds to the players account on their first deposit. The first deposit bonus at 100% match is the industries standard and most popular. If you deposit £20, you get £40, with £20 subject to wagering requirements.

Deposit bonuses come in many forms, but some are like the Devil himself. Charming, seductive and completely evil. At Slotsquad, we avoid these like the plague. But whether you’re getting £100 free, 20 free spins no deposit, five deposit bonuses, 300% match, deposit £10 get £60, etc. They all carry wagering requirements.

The Wagering Requirements

What are wagering requirements and why do deposit bonuses have them? If you go up a couple of paragraphs, I wrote nothing is free in this world, remember. Here is the reason things are not free in online casinos, bonuses are not really free. Because bonuses are subject to wagering requirements. The withdrawal hurdle that lies buried within the terms and conditions.

The terms are conditions for any online casino are boring, they’re cleverly small, tactically spaced and difficult to read. Strange when you about it, as the terms and conditions contain the casino’s most important stuff. Still, who reads the terms and conditions anyway? Someone who wants to know if they’ll ever get their casino winnings perhaps?

So how do deposit bonus wagering requirements work? Example: If you deposit £40 and play with £80 (using a standard 100% deposit match bonus), £40 of that £80 (the bonus) will need to be wagered a number of times. Wagering amounts vary from 5 x your bonus up to 50 x your bonus, perhaps more. But we’ll use 35 x wagering in our example.

Still with me? So if you deposit £40 and get £40 free, you’ll have to wager that bonus 35 x before you can withdraw any winnings associated with that bonus. You would have to wager through £1400 of slots and casino games. But wait, not all casino games are equal when it comes to wagering.

Not all slots and casino game wagering is equal

In our casino deposit bonus example above, you’ll have to wager through £1400 (your £40 bonus at 35 x wagering) before you can win to your wallet so to speak! That means withdraw winnings to your bank account. So how do you wager through that £1400 and which games do it more quickly? It’s important to note that not all games contribute to your wager equally. In fact, some are worse than others.

To get the information for you, I’m wading waste deep in the terms and conditions. It’s painfully boring, my eyes are squinting, and it hurts trying to understand, but I need to read on. It’s in here where we find out which slots or casino games contribute best to bonus wagering amounts.

In the UK slots site that we looked at, slot games contributed to 100% of the wagering amount, whilst classic slots contributed 75%. On the other hand, live dealer games such as Roulette and Blackjack offered just 5% towards the wagering of that bonus. Top tip, play online slots whilst you still have deposit bonus money. You’ll work through that wager much quicker. But check the terms and conditions of the online casino you intend to deposit with first.

Why casino first deposit bonuses work

Look at this logically, we said in our example that if you deposit £40, you play with £40. But to withdraw winnings you must play through £40 35 times, that’s £1400. It’s not a simple or quick process to do, nor is it meant to be. It’s why casino first deposit bonuses work, to keep us playing.

We get excited, play longer, get into games and find slots that we like playing. We see jackpots and winner leaderboards; winners, and we see potential wins for ourselves. All whilst trying to wager through £1400 of that £40 deposit bonus money.

That’s why deposit bonuses work? It’s not entirely in our interest, but here’s the good news. Once the bonus wagering amounts are met, we’re in a position to get on with business. Actually winning when we do win.

The best way to approach casino and slot bonuses

UK slot bonuses and casino deposit bonuses might offer the earth, but players should look more closely. See any bonus as a free look at the slots site or brand, a free demo if you like. Too many people get upset and misled by welcome bonuses because they jump without looking down first. Often left wondering why they can’t withdraw their winnings from the bonus money.

At Slotsquad, we’re not against welcome bonuses of any kind. We just want players to understand them. After all, the real fun starts when the welcome bonus and any wagering requirements are gone.