Claim a slots welcome bonus at the best 2024 casinos
Slots are the third most popular online gambling activity in the UK so it is no surprise that every casino offers a slot bonus. Our experts have spent months researching the best ones to find you hundreds of free spins, dozens of cash bonuses, and countless other promos for slots that you can claim today.
Choose a top slots bonus for September
100% up to £100
100% up to £100 + 10% Cashback
100% up to £300 + 150 Bonus Spins
150% up to £300 & 75 Bonus Spins on Big Bass Bonanza
100% match up to £100
The top 5 slot bonuses at UK casinos
Our experts explored over 100 UK casinos to find the 5 best UK slot bonuses perfect for every player profile.
#1 Pub Casino: Best overall slot welcome bonus
✅ Top-rated UK casino
✅ No maximum cap on winnings
✅ No game eligibility - use the bonus on what you want
❌ Quick expiry on bonus
Pub Casino's 100% up to £100 is the perfect choice for those claiming their first slot bonus. This bonus has no max cash out which means there is no cap on how much you can win. It has no slot restrictions and and has a £2 max bet which is around the average for the UK market. I maxed out the bet and had free reign of their slot games for 24 hours. Unlike the slots sign-up bonus at Grand Ivy, it is just a cash bonus and doesn't come with any free spins but its beauty is in its simplicity
💡Expert's advice: "Don't wait around for this bonus as you will only have 24 hours before the bonus money expires." William Macmaster, Casino.org UK Casino Expert
Overall Casino.org rating: 5/5 ⭐
Read our full Pub Casino review here.
Key terms:
- New players only
- First deposit only
- Minimum deposit £10
- Max bet £2
- Wagering 40x
- Expires within 24 hours
#2 Betway: Best free spins bonus
✅ No wagering on free spins
✅ Highest number no wagering free spins on the UK market
✅ Available on the popular UK game; Big Bass Bonanza
❌ Low-value spins (0.10)
Betway offers the most impressive free spins bonuses I have ever seen available in the UK. 125 wager-free spins will provide you with plenty of free gameplay in one of the UK's most popular slot games, Big Bass Bonanza. Here you get more spins for a smaller deposit than the second-best free spins deal in the UK available at MagicRed. I deposited, made a £10 stake on live blackjack, and then got my spins straight away.
💡Expert's advice "Remember that as this is a "stake" deal, a deposit won't be enough. You need to bet £10 on casino, live casino, or sports to be eligible." Ian Zerafa, Casino.org UK Casino Expert
Overall Casino.org rating: 5/5 ⭐
Key terms:
- 0x wagering
- New UK customers only
- Spins eligible on Big Bass Bonanza
- 0.10 per spin
- £10 stake on casino, live casino or sports required
- Valid for 7 days from account creation
#3 All British: Best cashback bonus
✅ Get 10% of lost deposits back
✅ No restrictions on cashback
✅ Valid on slot games
❌ Cashback takes a while to accumulate
The UK market is not exactly awash with cashback deals so this one from All British is wonderful. If you deposit and lose the whole deposit without making any wins, you will receive 10% of the deposit back. The key to making the most of this deal is to make higher-value bets. £10 in 0.05 spins is likely to make a win at some point and if any bet of your deposit wins, you will not get your 10%. I deposited £10 and played with 5 £2 spins to no avail. I received £1 back. I did it the same again and won which gave me a payout. Therefore, it did not add to my prize pot.
💡Expert's advice: "This is the perfect deal for high volatility slots. As they payout less frequently, you are more likely to lose a whole deposit. However, if they do payout, they will payout more and you will be laughing." Lewis Crane, Casino.org UK Casino Expert
Overall Casino.org rating: 5/5 ⭐
Read our full All British review
Key terms:
- 10% of every lost deposit returned as cashback
- Cashback applies to deposits where no bonus is included
- 0x wagering on cashback
- If any of your deposit wins, you will not receive a 10%
#4 Best weekly slot bonuses: MagicRed
✅ Game of the week exclusively for UK players
✅ Up to 50 daily spins to earn by wagering on any slot
✅ Opportunity to try out new slots
❌ Maximum daily spins require big wagers
If you are like me and you want rewards every week, Magic Red gives you two choices. Game of the Week and Daily Spin Frenzy. Game of the Week puts a new game in the spotlight each week and provides you rewards for playing it. In my case, it was Spark of Genius from Play'n Go. Daily Spin Frenzy gives you the chance to win up to 50 daily spins depending on how much you wager. I wagered £100 and got 10 free spins the next day.
💡Expert's advice: "There is a Casino.org exclusive 100 wager free spins bonus to claim on Fire Joker when you deposit £20 if you sign up with one of our special links." Adam Volz, Casino.org UK Casino Expert
Overall Casino.org rating: 4.5/5 ⭐
Read our full Magic Red review
Key terms:
- Game of the week changes every Wednesday
- Qualifying game only
- The promo is valid only for UK players
- Daily Spins have 35x wagering
- Daily Spins reflective of wagered amounts
- Wagers eligible on any slot for Daily Spins
#5 Best cash bonus: Grand Ivy
Pros:
✅ Biggest cash bonus available in the UK
✅ Large bonus bets available of £5
✅ 72 hours to use 75 bonus spins is plenty
Cons:
❌ 35x wagering will make it tricky to withdraw the maxed-out bonus
Grand Ivy offers a bigger cash bonus than our two top-rated casinos, Pub and All British Casino. You can claim a 150% match of £300 to use on slots. The max bet for bonus cash is capped at £5 which gives you plenty of leeway. You can also claim 75 bonus spins on Big Bass Bonanza but Betway's spins deal for this slot is far better as Grand Ivy's Spins come with 35x wagering. Overall, it is a sizeable deal but be prepared for wagering if you choose to max it out.
💡Expert's advice: "This bonus is high but so is the wagering. Withdrawing a £300 bonus by wagering x35 could be tricky. Depositing less may make a real money withdrawal more likely." William Macmaster, Casino.org UK Casino Expert
Overall Casino.org rating: 4.5/5 ⭐
Read our full Grand Ivy review
- New players only
- Min deposit £20
- Max bonus bet £5
- Bonus spins on selected games
- Bonus funds expire in 30 days
- Free spins expire in 30 days
Expert tip: What is a slots welcome bonus?
"A slot welcome bonus is the first reward given to players to use on slots. Every UK casino offers one. You can usually choose between free spins or a cash bonus. Free spins are designed specifically for slots. The best available are Betways and Magic Red's wager-free spins. Cash bonuses give you more variety. The best available for first timers is Pub Casino simple 100% up to £100. For those who want to take it up a notch, try Grand Ivy's 150% up to £300 deal and get 75 free spins too" Last updated: August 21st 2024
Slot sites to avoid
These slot sites have failed our rigorous testing procedures and received negative feedback from both our experts and users. They offer a tempting bonus for slots but be warned that these bonuses may come with impossible terms and conditions. Poor service may come further down the line with slow or low-quality slot games, poor customer support, and tricky transaction procedures,
Find a slots welcome bonus
What would you like to play today?
The most popular slot games to play in the UK 2024
Ready to play slots? These are our most popular UK slot games you can play for free now. You can find over 18,000 games to play on our site. Try some out, grab a slot bonus, and start playing for real money at top UK casinos.
Type of slot bonus available
There are different slot bonuses available for different players. They can be claimed either as a slots sign up bonus for joining the casino or as a weekly or monthly recurring promotion.
Slots can also be earned for loyalty to a casino or as a prize in tournaments or giveaways. Here are some of the most common slot bonuses available.
Free Spins
Free spins, aka bonus or extra spins, are playable spins that do not deduct from the player's balance. They will often be allocated to specific slots. The average free spins deals are between 50 and 150 free spins but you can get as many as 500.
💡 Expert tip: Winnings from free spins incur wagering requirements Wager-free spins allow you to keep what you win. Make sure to consider spin value and spin max-wins for the true value of free spins.
Slots deposit bonus
Bonus cash will be a percentage match for any deposits you make. The most common is 100% up to £100. This will match your deposit 1:1 up to £100. These bonuses can range from 25% to 300% and £50-£300 depending on the casino.
💡 Expert tip: Unlike free spins, you generally have carte blanche to use on any slot you want. They can often also be used in other areas of the casino.
Slots no deposit bonus
No deposit bonuses will be a signup bonus you can use on slots. They require no investment on your part. Just register your details to receive a small reward. You can get small no deposit cash bonuses of between £5-£10. You claim from 5 to over 50 no deposit free spins.
💡 Expert tip: No deposit spins sound like the dream but be careful as they can often have tough wagering requirements of over 50x.
New slot bonuses
When new slots hit the casino market, you will find special promotions for this slot for you to try. This could be free spins, cash bonuses, or a competition where prizes can be won. Keep your ear to the ground for the latest releases from big providers for highly-anticipated new slots that could launch with prizes.
💡 Expert tip: Magic Red offers a Slot of the Week deal that highlights a new slot. This could be the best place to start for these promotions.
Cashback
Cashback deals offer you the chance to earn a percentage of the bonus you lost on slots to be returned to you as bonus cash.
💡 Expert tip: Cashback is not commonly found on the UK market with All British Casino's offer being one of the best options available at this time.
Loyalty and VIP
The more you play the more rewards for slots you can earn with loyalty and VIP schemes. You earn rewards as you progress through their tiered system. The higher you rise, the bigger the prizes.
💡 Expert tip: VIP players will eventually be assigned account managers who provide tailored rewards specifically for their gameplay.
Slot tournaments
Slots tournaments can see you earn prizes by competing against other slot players to rise through a leaderboard. This can be done by earning the biggest multipliers, wagering the most, or having the biggest win.
💡 Expert tip: Pragmatic Play's Drops & Wins tournament is the most common slot tournament in the UK, but make sure to look out for smaller ones hosted by other casinos. Pub Casino has a specific tournament slots section to help you play the right games to be in it to win it.
What our expert says: Grab combo deals
"Many casinos out there will offer you slots welcome bonus package deal consisting of different types of slot bonuses. The most combinations common are free spins and a cash bonus. Slot offers come in different varieties so there is something for all players."
How we rate the best slot bonuses
Our experts analyse dozens of slot bonus offers every month to make sure they are the gold standard. With the following process, we can guarantee we are providing the best deals to our visitors:
Slot bonus type
A casino can offer various types of slot bonuses. Magic Red and Betway offer free spins, while Pub Casino and MryiadPlay offer deposit match bonuses. Mr Mega offer combines the two to offer players 100% up to £150 and 100 free spins.
Our experts aim to collect a selection of different bonuses so all players are catered for. Why not try out a few and see which suits your slot gameplay best?
Bonus frequency
Slot welcome bonuses are the most common type of casino bonus available. Nearly every UK casino offers one. Our experts are always on the lookout for sites that offer slot bonuses further down the line too.
Pub Casino only offers a first deposit bonus, but Grand Ivy and Dream Vegas offer rewards on your first 3 to 4 deposits. This includes bonus cash and free spins.
Slot rewards can be earned every week at MyriadPlay and Magic Red with their daily free spins deal.
Wagering requirements
The value of a slot bonus can be determined by how many times you need to play with bonus money or winnings before it can be withdrawn.
The average for the UK market is 35x which is offered by All British and Grand Ivy. Pub Casino offers slightly above-average wagering of 40x
The best deals have no wagering. Betway and MagicRed offer no wagering on their free spins so you can keep what you win.
Maximum win
Aiming for a high maximum win is always our focus so no maximum cashout is preferred. This is the case at Magic Red and All British.
A max win can also be affected by the max bet or spin value attached to a bonus. All British also delivers in this area with a £5 maximum bonus bet. This is going to let you bet the maximum allowed on slots in the UK.
At Luna Casino, the max spin value is 0.05 which will make earner big wins tougher. The more you bet, the bigger the payouts.
Eligible games
Our experts hunt for slot bonus offers that can be used on a wide range of slots. This is why cash bonuses can have an edge over free spins.
You will find that at Pub Casino and All British Casino, you can use the bonus to bet on any slot you want. Free spins deals will usually limit you to certain slots. At Dream Vegas, this is limited to a handful of NetEnt slots.
If a promo offers free spin and cash, you can get the best of both worlds. At Grand Ivy, the free spins are available for Big Bass Bonanza but the cash bonus can be used on any casino games.
Payment methods and other restrictions
We try our best to find bonuses that are not too restricted by payment methods.
Skrill and Neteller deposits can sometimes exclude you from slot bonuses. This is the case at All British Casino and Pub Casino.
If you want to use an e-wallet, your best bet is to find a PayPal casino. Most bonuses do not restrict other popular casino payment methods like debit cards, Paysafecard and Trustly.
Overall casino rating
As slot fans, our team of experts love a bonus but there is more to consider than just this.
As well as good slot bonus deals, we want a good range of slots with over 2000 being our preference. We also want easy payment processes with fast withdrawals and an efficient customer support team to help us every step of the way.
All of our sites have been through a rigorous 25-step review procedure to make sure that the bonuses aren't the only thing great thing about them.
How to claim a slot welcome bonus?
Ready to claim your slot welcome bonus? Here is how to do it!
Step 1 - Choose a Reputable Casino
Take a pick from our list of top casinos for slot bonus offers. We recommended checking out Pub Casino.
Step 2 - Create & verify your account
Sign up to the casino by adding your details. Double-check they are correct. Make sure to verify your identity and email address if prompted.
Step 3 - Review terms and conditions
Make sure to read the terms and conditions to fully understand the slot sign-up bonus correctly. Make note of any minimum deposit amounts, bonus codes, or restricted payment options. Pay further attention to wagering requirements, max wins and eligible slots.
Opt-in for bonus and deposit
Click on the bonus call-to-action button to opt in and add your bonus code if needed. Most slot bonuses will require a deposit. Remember: Only play with what you can afford to lose.
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Play slots with your bonus!
Now you have claimed your bonus, you can use it to explore and play the wide range of slot games available.
Expert tip: What slots should you play?
"Find a slot that benefits your bonus. Free spins are usually allocated to just a few slots but with bonuses, you can choose what you play. High volatility slots can be lucrative with a high-value cash bonus as you have more time to wait for a bigger payout. Make sure you are always playing a high RTP slot to ensure you are not wasting the bonus on a slot that won't payout. "
Slots welcome bonus offers at a glance
There are dozens of slot sign up bonus offers available on our site but there are some common trends. These trends can help you decipher the best deals on the market. Here are some quick takeaways to apply to your slot bonus hunting.
🎁 Standard slots welcome bonus amount | 100% up to £100 |
🎰 Standard number of slots sign up bonus free spins | 50-150 |
📙 Average wagering requirement | 35x |
🎰 Eligible casino games | Big Bass Bonanza, Book of Dead, Starburst |
💰 Max. win | £100 |
ℹ️ Slots welcome bonus codes | Not always needed |
Slot bonus terms and conditions
Terms and conditions are crucial in getting a good deal at your new slot site. Here are some key recurring terms and conditions that can make or break a deal.
Unless you have claimed a deal with no wagering, like at Betway and Magic Red, you will need to play with your bonus money and winnings a set number of times before you can withdraw it as real money.
The average for the UK is 35x. This is the case at All British and Grand Ivy. However, it can be higher. For example, the Hippodrome online casino has 50x wagering. This will make it very tricky to turn that bonus into real money.
💡 Expert tip: The key thing to remember is the more you need to wager, the less likely you have the chance to withdraw that money. Aim for lower wagering or claim smaller bonus amounts if the wagering is high.
Top casinos for wagering:
🏁 Betway - 0x
🪄 MagicRed - 0x
💜 Casumo - 30x
Most casinos will only give you between 1-3 days from registering your account to claim your slot's welcome bonus. After this, you will not be eligible for the welcome deal.
A time scale will also be applied to using your bonus. This is the case at Pub Casino where the whole bonus needs to be used in 24 hours. After this period, your bonus cash is lost.
In some cases, different time scales may apply to different parts of the deal. At HeySpin, for example, you have to use the free spins in 24 hours but you have 14 days to use the bonus cash.
💡 Expert tip: Time limits will include completing wagering requirements. If you have a 30-day expiry, you need to play with the bonus and redeem the wagering in this time frame.
Best bonus time frames:
🍃 Grand Ivy - 30 Days (72 hours for Spins)
💭 Dream Vegas - 30 Days (72 hours for Spins)
🌪️ HeySpin - 2 weeks
Unless the deal specifies no max cashout, like at Pub Casino, All British, and Magic Red, you may find there is a cap on how much can be won with the bonus. The UK average for max wins from a bonus is £100. This is the cap found at sites like Grand Ivy and Dream Vegas.
💡 Expert tip: Avoid jackpot slots with any bonus that has a max-win. If you hit that mega jackpot, you may find yourself disappointed when you only are eligible for £100 of it.
Casinos with no max win:
🍻 Pub Casino - No max cashout
💂♂️ All British - No max cashout
🪄 MagicRed - No max cashout
Bet limits are another way by which your winnings can be capped. This is because on slot games, the more you wager, the higher the payouts are.
At All British Casino, the max bet with a bonus is £5. This is great as this is the maximum you are allowed to bet per spin on a slot game in the UK.
The second best bet limit after this is Pub Casino which offers £2 max bet. These can be a lot lower though.
At Betway, the spin value is 0.10 but you do not need to wager any winnings.
💡 Expert tip: The UK has laws which limit bets on maximum stakes on slots. £5 per spin where the player is aged 25 and over; and. £2 per spin where the player is aged 18 to 24. This is why you won't find maximum bets any higher than this.
Casinos with best max bets limits:
💂♂️ All British - £5
💭 Dream Vegas - £5
🍃 Grand Ivy - £5
If you claim bonus cash, you will often have free reign to play on any slot you want with it. If you claim free spins, this is unlikely to happen.
Many casinos offer free spins on one specific slot. The most common in the UK is the Big Bass Bonanza. Betway, Grand Ivy and Mr Mega all offer their spins on this game.
You may have more autonomy at other casinos like Dream Vegas. Here you play a handful of NetEnt slots.
💡 Expert tip: If you can choose any slot you want, consider RTP, volatility, and bonus features (like multipliers) that could see you make more out of your bonus.
Best casinos for bonus-eligible games:
🍻 Pub Casino - Any game
💂♂️ All British - Any game
💚 MyriadPlay - Any game
A casino's minimum deposit amount will not always make you eligible for a bonus. At All British Casino, it is possible to deposit £10 but you need to deposit £20 to be eligible to claim the bonus.
In some cases, it may be a minimum stake you need to meet. At Betway, a deposit is not enough and you will need to wager your £10 deposit to be eligible for their free spins.
💡 Expert tip: Some sites offer tiered deposit rewards even for free spins where the more you deposit, the more spins you will earn.
Best low deposit bonus sites:
🍻 Pub Casino - £10
⚡ MrMega - £10
💚 MyriadPlay - £10
Work out your slots bonuses value
Ready to claim your slot sign-up bonus? Work out how much your bonus is worth using our handy calculator tool. Enter the bonus amount to calculate how much money you need to wager and what the total value of the balance available in your account will be. This balance is equal to the sum of your deposit + the bonus.
Many of our casinos only offer free spins at a slot sign-up bonus. For these casinos, just need to meet the minimum deposit and the spins will be yours.
Bonus Calculator
Free spins or bonus cash?
The most popular bonuses for slots you will find are free spins and cash bonuses - so which is better?
| Free Spins | Lower wagering available with 0x possible | Specifically designed for slot gameplay | Lower deposit required to claim | Less gameplay available | Limited to certain games |
|---|---|---|---|---|---|
| Cash Bonus | More flexibility with more slots and gameplay options available | Available at nearly every UK casino | Higher amount of gameplay time available | Tougher terms and conditions attached with higher wagering | Requires larger investment to max-out |
| Free Spins | Cash Bonus |
|---|---|
| Lower wagering available with 0x possible | More flexibility with more slots and gameplay options available |
| Specifically designed for slot gameplay | Available at nearly every UK casino |
| Lower deposit required to claim | Higher amount of gameplay time available |
| Less gameplay available | Tougher terms and conditions attached with higher wagering |
| Limited to certain games | Requires larger investment to max-out |
Top 3 most popular slots for bonuses
While a slot bonus can be offered on any slot. Many casinos decide to offer them on the most popular among UK players. Here are the top 3 online slots that you are most likely to find bonuses on.
Big Bass Bonanza
Big Bass Bonanza is the fishing fun slot extravaganza that casinos love giving out bonuses for. There are few iterations of this game but the original is where the most bonuses can be picked up.
💲Paylines - 10 Paylines
🤞 Volatility - Medium-High
✖️ Max Win - 2,100x
💸 RTP - 96.71%
🎰 Free spins available at - Betway, Mr Mega, PlayOJO, Grand Ivy, Lottoland
Book of Dead
It is almost 9 years since Rich Wilde and the Book of Dead was released but it remains very popular. This is why you can continue to unearth free spins at many online casinos.
💲Paylines - 10 Paylines
🤞 Volatility - High
✖️ Max Win - 5000x
💸 RTP - 96.21%
🎰 Free spins available at - HeySpin, Luna Casino, Casimba
Starburst
Starburst is another golden oldie that players still absolutely love to play with free spins on. Its shine might be fading as newer slots light up the casino sky but there are still plenty of bonuses to claim on it.
💲Paylines - 10 Paylines
🤞 Volatility - Low
✖️ Max Win - 500x
💸 RTP - 96.09%
🎰 Free spins available at - Dream Vegas, Simba Slots
Why trust Casino.org?
Why can you trust our recommendations? Let's take a look at where our reliability comes from.
Endorsed by thousands of UK players
Hundreds of UK players visit our site every day looking for top casinos with cutting-edge bonuses and reliable service and they are never disappointed. We have helped UK players win over £45 million since 1995.
Over 100 slot bonuses researched
Our experts have spent hours searching for slot bonuses and have over 100 for you to choose from. Whether you want free spins, bonus cash, cashback or any other slot bonus, we have it here.
Hundreds of hours spent reviewing
Our UK experts have spent hundreds of hours reviewing over 65 casinos to give you the insider knowledge you need to make an informed decision and benefit from the gold standard of UK casinos.
18,000+ free slots to play
We are huge slots and have curated a free slots page full of over 18,000 slots. Find your next favourite slot by playing free on our site. Don't just rely on us, play them yourself and find out what the best of the best feels like.
UK slot bonus FAQs
What are slot bonus round?
A bonus round can be triggered in the slot by matching certain symbols on the reels. During these, larger prizes can be won without using your casino balance. Bonus buy slots allow you to pay to access these but these are illegal in the UK.
Can I use slot bonuses on other online casino games?
By nature, free spins can only be used on slots. Other bonuses can usually be used on other casino games depending on the terms and conditions. Sometimes they may not apply 100% to a bonuses wagering requirements.
Are progressive jackpot slots eligible for slots bonuses?
They can be. It depends on the terms and conditions attached to the slot. You may also find that winning the full jackpot might be prevented by maximum win limits attached to bonuses.
Can loyal players get bigger bonuses?
They can - especially if they reach VIP status. Over time as you move through a casino loyalty program you get tiered rewards reflective of your level. Loyal players may also get bonuses sent directly to their email addresses or casino account messages.
Are there bonuses for new launched slot games?
Yes, some slot games that are launched with much fanfare may receive unique bonuses to celebrate their release. Not every new slot will receive the bonus treatment. Some sites, like Magic Red, do a slot of the week where a new game is put in the spotlight for promos each week.
Written by William Macmaster
William Macmaster is a casino expert who has spent his career connecting players from across the world with unforgettable experiences at safe and reliable online casinos. You can rely on him to provide you with the knowledge you need to get more out of your online gambling experience.
Fact checked by Ian Zerafa
Ian Zerafa grew up in Malta, Europe's online gaming hub and home of top casino regulators and auditors such as eCOGRA and the Malta Gaming Authority. After completing his Master's degree in Glasgow, he returned to Malta and started writing about casinos. He's worked on hundreds of casinos across the US, New Zealand, Canada, and Ireland, and is a go-to authority for Casino.org's team.
Sources and references
- Leading online gambling activities in the United Kingdom as of January 2024 - Statista
- Online slot machine stakes to be capped at £5 in Great Britain - The Guardian
- Remote gambling and software technical standards (RTS) - United Kingdom Gambling Commission
