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Best Slot Bonuses UK – Slots Sign Up Offers in 2025

In the world of online gambling, players across the globe search fervently for bonuses to stretch their deposits and get more bang for their buck. These bonuses come in a variety of formats, but there’s one in particular that is perfect for the slots fans among us – slot bonuses. As online slots grow in popularity in the UK, dozens of casinos are now offering the best slot bonuses to reward these players. Today, we’re showcasing some of our favourite slot sign up offers, and showing you what to expect from these bonuses.

Slots Sign Up Bonuses UK – January 2025

Midnite Casino
5/5
Welcome Bonus
Bet £20 Get 100 Free Spins on Big Bass Splash
Min Deposit
£5
Wagering
0x
Free Spins
100
General Info
Payout Time
24 – 72 Hours
Number of Slots
1000+
Live Dealer Games
Yes
Casino Games
casino Online Casino
live_casino Live Casino
betting Online Betting
slingo Slingo
Payment Methods
Apple_Pay-Logo
Pros
  • Accepts PayPal
  • Beautifully designed website
  • Free daily scratchcard
Cons
  • Not live in many countries
  • No deposit match bonus
Neptune Play Casino
5/5
Welcome Bonus
100% Bonus Up To £200 + 25 Wager Free Spins
Min Deposit
£10
Wagering
35x
Free Spins
25
General Info
Payout Time
48 Hours
Number of Slots
500+
Live Dealer Games
Yes
Casino Games
casino Online Casino
live_casino Live Casino
betting Online Betting
slingo Slingo
Payment Methods
Pros
  • Great welcome offer
  • Hundreds of Slots
  • Live Chat available
Cons
  • No mobile app
  • Lacks live casino options
Fruit Kings Casino
4.9/5
Welcome Bonus
Get 100 No Wagering Free Spins When You Play £10
Min Deposit
£10
Wagering
0x
Free Spins
100
General Info
Payout Time
48 – 72 Hours
Number of Slots
1000+
Live Dealer Games
Yes
Casino Games
casino Online Casino
live_casino Live Casino
slingo Slingo
Payment Methods
Pros
  • Easy to navigate
  • Compatible on desktop, mobile and tablet
  • Live chat and email available
Cons
  • No sportsbook
  • No telephone support
Vegas Moose Casino
4.8/5
Welcome Bonus
Deposit £30 Get 80 No Wagering Free Spins
Min Deposit
£3
Wagering
0x
Free Spins
80
General Info
Payout Time
24 Hours
Number of Slots
3000+
Live Dealer Games
Yes
Casino Games
casino Online Casino
live_casino Live Casino
slingo Slingo
Payment Methods
Apple_Pay-Logo
Pay by mobile
Mega Riches
4.8/5
Welcome Bonus
100% Up To £100 + 50 Free Spins
Min Deposit
£10
Wagering
35x
Free Spins
50
General Info
Payout Time
Instant – 72 hours
Number of Slots
1000+
Live Dealer Games
Yes
Casino Games
casino Online Casino
live_casino Live Casino
slingo Slingo
scratchcards Scratchcards
Payment Methods
Apple_Pay-Logo
Pros
  • Excellent promotions
  • Wide range of slots
  • Great customer support
Cons
  • Help section isn’t easy to find
  • Some hurdles to speak to agent on live chat
PricedUp Bet
4/5
Welcome Bonus
Bet £30 Get 90 Free Spins
Min Deposit
£10
Wagering
10x
Free Spins
90
General Info
Payout Time
24 Hours
Number of Slots
300+
Live Dealer Games
Yes
Casino Games
casino Online Casino
live_casino Live Casino
betting Online Betting
Payment Methods
Lottomart
4.8/5
Welcome Bonus
100% up to £200 + 100 Free Spins
Min Deposit
£20
Wagering
50x
Free Spins
100
General Info
Payout Time
24 – 72 Hours
Number of Slots
3000+
Live Dealer Games
Yes
Casino Games
casino Online Casino
live_casino Live Casino
lottery Online Lottery
slingo Slingo
Payment Methods
Pros
  • Great choice of lottery games
  • Mobile app available
  • Extremely generous welcome bonus
Cons
  • Limited payment methods
  • No phone support available
  • Lacks some slot providers
Lottoland Casino
4.2/5
Welcome Bonus
Stake £10 on Big Bass Bonanza & Get 50 Free Spins
Min Deposit
£10
Wagering
0x
Free Spins
50
General Info
Payout Time
48 Hours
Number of Slots
500+
Live Dealer Games
Yes
Casino Games
casino Online Casino
live_casino Live Casino
poker Online Poker
lottery Online Lottery
Payment Methods
Pros
  • Best UK Site for Lottery
  • Comprehensive selection of slots
  • Excellent customer support
Cons
  • Lacks some payment options
  • Missing some slot providers
Jackpot.com
4.4/5
Welcome Bonus
Play with £15 and Receive 50 No Wager Spins
Min Deposit
£10
Wagering
0x
Free Spins
50
General Info
Payout Time
24 Hours
Number of Slots
500+
Live Dealer Games
Yes
Casino Games
casino Online Casino
live_casino Live Casino
lottery Online Lottery
slingo Slingo
Payment Methods
Pros
  • Extensive range of jackpot slots
  • Great banking options
  • Buy lottery tickets online
Cons
  • Live chat not available 24/7
  • Limited payment options
Kwiff Casino
4.5/5
Welcome Bonus
Wager £20 + Get 200 Wager Free Spins
Min Deposit
£10
Wagering
0x
Free Spins
200
General Info
Payout Time
48 Hours
Number of Slots
800+
Live Dealer Games
Yes
Casino Games
casino Online Casino
live_casino Live Casino
betting Online Betting
poker Online Poker
Payment Methods
Pros
  • No wagering requirements on winnings
  • Offers sportsbook
  • Appealing welcome offer
Cons
  • No bet builder in sportsbook
  • Withdrawals aren’t always instant
LottoGo Casino
5/5
Welcome Bonus
100% deposit match up to £100 + 100 Free Spins
Min Deposit
£5
Wagering
40x
Free Spins
General Info
Payout Time
24-48 Hours
Number of Slots
1999+
Live Dealer Games
Yes
Casino Games
casino Online Casino
live_casino Live Casino
bingo Online Bingo
lottery Online Lottery
Payment Methods
Pros
  • Great welcome offer
  • Bingo & Lottery
  • Impressive live casino selection
Cons
Gentleman Jim
4.4/5
Welcome Bonus
Wager £10 get 20 Free Spins on Big Bass Splash
Min Deposit
£10
Wagering
0x
Free Spins
20
General Info
Payout Time
24 – 72 Hours
Number of Slots
400+
Live Dealer Games
Yes
Casino Games
casino Online Casino
live_casino Live Casino
betting Online Betting
Payment Methods
Pros
  • Great bookmakers
  • Easy to navigate
  • Responsive on mobile
Cons
  • Missing some slots
  • Lacks modern payment methods
Foxy Games
4.9/5
Welcome Bonus
£10 Slots Bonus + 100 Free Spins
Min Deposit
£5
Wagering
40x
Free Spins
30
General Info
Payout Time
Instant – 24 hrs
Number of Slots
1000+
Live Dealer Games
Yes
Casino Games
casino Online Casino
live_casino Live Casino
bingo Online Bingo
slingo Slingo
scratchcards Scratchcards
Payment Methods
Apple_Pay-Logo
Casumo
4.8/5
Welcome Bonus
100% up to £100 + 50 Bonus Spins
Min Deposit
£10
Wagering
30x
Free Spins
20
General Info
Payout Time
24 – 48 Hours
Number of Slots
1500+
Live Dealer Games
Yes
Casino Games
casino Online Casino
live_casino Live Casino
betting Online Betting
slingo Slingo
Payment Methods
Apple_Pay-Logo
Pros
  • Multiple gaming licenses
  • Great reputation
  • Thousands of games
Cons
  • Sports betting not available
  • Limited payment methods
Leo Vegas
4.8/5
Welcome Bonus
50 Free Spins on Big Bass Splash & Up to £100
Min Deposit
£10
Wagering
35x
Free Spins
50
General Info
Payout Time
24 Hours
Number of Slots
1500+
Live Dealer Games
Yes
Casino Games
casino Online Casino
live_casino Live Casino
bingo Online Bingo
slingo Slingo
Payment Methods
Apple_Pay-Logo
Pros
  • Superb selection of slots, live casino and sports options
  • Great welcome offer
  • Mobile app available
Cons
  • Lacks Poker games
Grosvenor
4.7/5
Welcome Bonus
Deposit £20 Play With £50
Min Deposit
£5
Wagering
5x
Free Spins
General Info
Payout Time
24-72 Hours
Number of Slots
750+
Live Dealer Games
Yes
Casino Games
casino Online Casino
live_casino Live Casino
betting Online Betting
slingo Slingo
Payment Methods
Apple_Pay-Logo
Pros
  • Excellent live casino section
  • Great customer support
  • Reliable banking options
Cons
  • No mobile app
Casushi Casino
4.8/5
Welcome Bonus
Get 100 Wager-Free Spins When You Play £10
Min Deposit
£10
Wagering
0x
Free Spins
20
General Info
Payout Time
3 – 5 Days
Number of Slots
1000+
Live Dealer Games
Yes
Casino Games
casino Online Casino
live_casino Live Casino
slingo Slingo
scratchcards Scratchcards
Payment Methods
Pros
  • Mobile-friendly website
  • Automatic KYC
  • Lots of payment options
Cons
  • No phone support
  • Terms and conditions could be clearer
MrQ Casino
4.8/5
Welcome Bonus
Spend £20 Get 75 Free Spins
Min Deposit
£10
Wagering
0x
Free Spins
75
General Info
Payout Time
1 – 3 Days
Number of Slots
1000+
Live Dealer Games
Yes
Casino Games
casino Online Casino
live_casino Live Casino
bingo Online Bingo
slingo Slingo
Payment Methods
Pros
  • Generous bonus
  • Great safer gambling tools
  • Customer support available via live chat
Cons
  • No mobile app
  • No sports betting
Mr Vegas
4.8/5
Welcome Bonus
100% up to £200 + 11 Wager Free Spins
Min Deposit
£10
Wagering
35x
Free Spins
11
General Info
Payout Time
24 hours
Number of Slots
3000+
Live Dealer Games
Yes
Casino Games
casino Online Casino
live_casino Live Casino
slingo Slingo
scratchcards Scratchcards
Payment Methods
Apple_Pay-Logo
Pros
  • Excellent reputation
  • Thousands of games
  • Great welcome offer
Cons
  • No mobile app
  • No loyalty scheme in UK
Barz Casino
5/5
Welcome Bonus
100% up to £300 + 50 bonus spins on Starburst
Min Deposit
£20
Wagering
40x
Free Spins
50
General Info
Payout Time
24 Hours
Number of Slots
1000+
Live Dealer Games
Yes
Casino Games
casino Online Casino
live_casino Live Casino
poker Online Poker
slingo Slingo
Payment Methods
Pay by mobile
Apple_Pay-Logo
Pros
  • Great design
  • Good range of payment methods
  • Licensed in many countries
Cons
  • No mobile app
  • Support not available 24/7

What are Slot Bonuses?

Welcome BOnuses

Slot bonuses are exactly what they sound like – bonuses designed for slots. When you accept a casino bonus, you can usually use any bonus funds you receive to play online slots, but there are some bonuses that are more tailored towards slots fans. These are the bonuses that we refer to as ‘slots bonuses’.

These bonuses exist to attract new players to a casino, to retain existing players, or to reward loyal players. No matter the reason for a slots bonus, as a player you get to reap the benefits. Whilst bonuses can come in a variety of forms – like deposit bonuses or cash back – the most common slots bonus in the UK is a free spins offer.

Taking advantage of slots bonuses has a number of benefits for players, including the following:

  • Extended gameplay from your deposit.
  • Opportunity to try new slot games.
  • More chances to win.
  • Extra money to spend and enjoy.

How do Slot Bonuses Work?

Generally speaking, slot bonuses are no more complex than any other casino bonus. In fact, they are often more simple than something like a deposit match bonus, which requires knowledge of more complicated terms and conditions.

However, the term ‘slot bonuses’ has two meanings:

  • Bonuses available within a slot game
  • Sign up bonuses available to players

In this instance, where we’re discussing the slot bonuses that you can take advantage of as a new player at a UK casino, we’re referring to the second option – bonuses available to players.

There are a few different kinds of slots bonuses that you might find, but thankfully they all work in the same way – by offering players free spins to use on popular UK slots.

When searching for a slots bonus at UK casinos, you may see the following:

  • Free spins
  • Wager-free spins
  • No deposit spins

We’ll go into more detail on these later, but for now the good news is that they’re all quite similar, making them easy to understand.

How to Claim a Slots Welcome Bonus?

Claiming a slots bonus is simple, and we’re making it even simpler with guides like this, where we curate our favourite slots bonuses in one place for you. Below you can find our step by step guide to finding the best bonuses for online slots.

Choose a Reputable Casino

First things first, you must choose a casino. If you’re in search of a slots bonus, our advice is to choose one of the best slot sites in the UK, which will guarantee you a bonus that can be used on slots. By choosing a slot site through Fruity Slots, you can guarantee the casino is licensed and regulated, and has been checked over by experts.

Sign Up and Provide Your Details

Next you’ll need to sign up to the casino. This includes providing your personal details and possibly verifying your account. Some of your verification is carried out automatically, whilst some you may need to provide. If this is possible to do early on we recommend this, as it streamlines the withdrawal process later.

Review Terms and Conditions

It’s imperative that you understand the bonus you are claiming at any casino. Although the UKGC does look after a lot of the fairness, misunderstandings do occur, which can lead to player disappointment. The best course of action is to be aware of all terms and conditions before accepting a bonus, so you know what to expect.

Make a Qualifying Deposit

For the majority of slot bonuses, you will need to make a qualifying deposit. If you do not have to make a deposit, your bonus will be automatically credited. Always make sure you are hitting the minimum deposit requirements according to the terms and conditions, and using a reputable payment method for safe transactions.

Claim Your Slots Bonus

After making a qualifying deposit, your slots bonus will be credited to your account. This may occur automatically or you may have to visit the bonus dashboard to activate it. Remember to check if you have a slots bonus – like free spins – that is spread over multiple days, and remember to go back the next day and claim the rest!

Different Types of UK Slots Bonuses

On your hunt for a slots bonus at UK casinos, you will see a few different kinds of bonus. These can very easily split into two categories – new player offers and existing player offers.

The good news is that as a player searching for a new casino to claim a slots bonus, both of these options are available to you. However, if you have already claimed a slots welcome bonus from a casino, only existing player offers will be available to you at that site. Within these categories, the following bonuses can be found.

New Player Offers

  • Free spins
  • Wager-free spins
  • No deposit spins

Existing Player Offers

  • Free spins
  • Slot tournaments
  • Reload slots bonuses

Now lets break it down in a little more detail for you so you can decide which type of slots bonus sign up offer works for you.

Free Spins

Free Spins are the most popular slots bonus you will see in the UK. This is perhaps the most easily understood bonus. When you claim a free spins slots bonus, you are awarded a number of spins to play on a slot game for free.

This can range from as few as 10 spins when accompanying a cash offer, up to hundreds of spins awarded on popular slots – the latter of which we would consider to be the best slot bonuses available to players. Free spins are often on the lowest possible stake, however the qualifying deposit is usually low, meaning that you get an equal or higher value in spins than the deposit you made to claim them.

Wager-free Spins

When claiming a free spins slot bonus, you will find there is a wagering requirement attached. This is a given with almost every kind of bonus in the UK, with one notable exception – wager-free offers. These slots bonuses are always free spins, but when claiming one of these offers you will not have to fulfil any kind of wagering requirement before you can withdraw.

This means that after playing through your free spins you are free to withdraw whatever you have won, as long as there is no withdrawal limit in place. Given the winning potential of many slot games nowadays, it’s no wonder these slot bonuses are so popular. They are so popular today that we have a dedicated page just for no wagering free spins offers here.

No Deposit Spins

There is no more lucrative slots bonus for UK players than no deposit spins. Again, this a simple one to understand. At certain slot sites, players can receive free spins on a popular slot game with no deposit required – this is just an offer available to all players who sign up.

There are obvious limits in place with slots bonuses requiring no deposit, including a limit on how much can be withdrawn, and the actual size of the bonus on offer, but as something that is completely free it’s a no brainer to claim! At some of the best slots bonus casinos, a no deposit bonus will accompany the regular bonus, giving you even more bang for your buck.

Slot Tournaments

As an existing player, you will have access to a variety of slots bonuses, including slots tournaments, which are growing in popularity. These tournaments can be created by a casino or by a provider, and can offer a variety of prizes including cash, free spins or tickets to other events.

Players can opt in or out of tournaments, although if you’re planning to play a slot anyway, we always recommend opting in as you never know when you could bag yourself a prize. You will usually be playing against other players in a tournament with a leaderboard, but in some cases you just need to wager a certain amount of automatically win a certain percentage of the prize pool, so always read the entry requirements!

Reload Bonus

Reload Slots Bonus

Finally it’s reload slots bonuses. These are bonuses that are offered to players as a ‘second-chance’. A reload slots bonus can come in the form of free spins, cash back, or match bonuses. In every instance it gives players a chance to play even more slots for free.

Like all other bonuses, it’s important to read the terms and conditions associated with any reload bonuses on offer, and to check if you need to opt in – regularly browsing the promotions area will ensure you never miss a slots offer.

Online CasinoSlots Welcome Bonus
Lottomart100% up to £200 + 100 Free Spins
Jackpot.comPlay with £15 and Receive 50 Free Spins
Mega Riches100% Up To £100 + 50 Free Spins
Midnite CasinoBet £20 Get 100 Free Spins on Big Bass Splash
Lottoland CasinoStake £10 on Big Bass Bonanza & Get 50 Free Spins

With slot bonuses continuing to become more prevalent in the online casino sector, we see more free spins offers than ever before. Although every casino and offer is different, there are some games that we see appearing alongside offers time and time again. These are the games that players are awarded slot bonus spins on.

Each of the games below earned their spot on the list due to their reputation and popularity with players, and you can expect to see them when searching for slots deposit bonuses.

slot-starburst-review
Starburst

NetEnt’s Starburst is one of the oldest slots on this list, and one of the most common to see with a slots bonus. Released more than 12 years ago, this game has found popularity with a variety of players, and as such secured its spot as one of the most common slots to receive free spins on long ago. With so many fans, this release has also led to 2 sequels, so look out for bonuses on those too!

Book Of Dead Slot Logo
Book of Dead

As a slots enthusiast, you will definitely have enjoyed book games before, and perhaps the most notable example of this mechanic is Rich Wilde and the Book of Dead – more commonly referred to as just ‘Book of Dead’ – from Play’n GO. This release is another staple in UK slots bonuses, and one you can definitely expect to receive free spins on.

big bass splash logo
Big Bass Splash

The Big Bass series from ReelKingdom is one of the most popular slot series in the UK, which is why they are such common releases to find as part of a free spins offer. One example of this is Big Bass Splash in this series, which players will often receive free spins on – including in some of our Fruity Slots exclusive slot bonuses that you can claim.

Immortal Romance

Immortal Romance from Games Global is a fan favourite, so it’s no wonder that many slot sites will offer free spins on this release as part of their slot bonus package. No matter how old this release is, players still gravitate towards it – perhaps because of the great soundtrack – so it doesn’t seem like things will be changing anytime soon.

Reactoonz

Some of the best slots you can receive free spins on are those a little bit different, and Reactoonz from Play’n GO definitely fits that bill with its progressive features and unique ‘bonus’. Finding a slots bonus for UK players that offers free spins on this release is Walways exciting, and not something that you want to pass up if it comes your way.

Using Slots Bonuses For Big Wins On Streams

As you are most likely aware Fruity Slots are the UK’s largest slot streamers on youtube, so as you can imagine we have had many big wins after using slots bonuses offered to us. Before we wrap things up, we thought we would share our latest big win video in case you are looking for some Youtube video slots entertainment.

Wrapping Up Slots Bonuses in the UK

And there you have it – everything there is to know about a slots bonus! There are a variety of other bonuses that you might find when browsing casinos – especially those recommended by our experts at Fruity Slots – but if you’re a fan of slots in particular, a slot bonus is the best option for you.

With these bonuses you can get great value for money by claiming hundreds of free spins at a fraction of the cost, or even find wager-free and deposit-free spins available to new casino players in the UK. By choosing one of our recommended slot bonuses or slot sites, you know it has been checked over by a team of professionals, and that it is both fair and regulated, ensuring you will be safe when playing.

Always remember to read the terms and conditions before accepting any offer, and to always gamble responsibly.

Slot Bonuses – FAQs

  • How can I claim a slots bonus?

    Claiming a slots bonus is easy – just choose the casino you would like to join from our list above and sign up. Your bonus will be automatically credited to your account after you meet the requirements.

  • Can I withdraw bonus money immediately?

    Bonus money cannot be withdrawn. However, once you have completed any spend requirements (or if you didn’t have these to begin with) your bonus funds will move into your cash balance, which can be withdrawn at any time.

  • What games can I play with a slots bonus?

    You can only use your free spins on eligible games, however once you are wagering or using bonus money you can usually play almost every game.

  • What is the best UK slot welcome bonus you have running?

    We have a variety of slot welcome offers that will suit different kinds of players. One stand out bonus we have is our

    , where Fruity Slots players can claim 100 free spins on Big Bass Splash.

  • Is an online slots bonus worth it?

    Due to the regulations around bonuses in the UK – including the fact that they must be non-sticky – claiming any kind of bonus is always worthwhile, and this includes a slots bonus.

  • Can loyal players get bigger slots bonuses?

    Very few casinos in the UK now offer what was known in the past as loyalty rewards, however by continuing to play at a slot casino you can unlock additional rewards and bonuses.

  • What is a slots bonus code?

    Some casinos require players to input a specific code when they sign up or deposit in order to claim the slots bonus. This is quite rare, and when you join a casino like this through Fruity Slots the code is usually filled in for you, but it’s good to be cautious and always check this, as it can be tricky to add it after.