Slots are one of the best sources of quick thrills and fast-paced action. They have all the excitement of other online games, compacted into neat easy-to-play packages.
And when you’re playing with real money, you don’t want to be taken for a ride.
Deals, deals, deals
There’s no reason to pay full whack with our definitive list of the best slot bonuses from across the UK: play all your favourites for less by taking advantage of these top offers.
Find your favourite
Win cash and other prizes — check out all the details with our simple star rating and review system. Find out which of these slots sites have the most generous welcome bonus packages, best promotions and widest variety of games on offer.
With money to be made and a great many free spins to be spun, there’s a slot site for everyone: which will you choose to play today?
Love to play slots, but wish you didn’t have to pay? Check out our no-deposit slots here.
100% BONUS + 100 Free Spins on Gonzo's Quest
FruitKings Casino: a review of offers, bonuses and promos FruitKings Casino is a fun new jungle-themed casino site from the makers of BingoCams. The site is easy to navigate and easy to sign up to, it has a competitive online casino welcome offer, and has lots of online slot and casino... Continue reading
18+. New Players only. 100% bonus on first deposit up £50 plus 100 free spins. Free spins are available on Gonzo's Quest at 10 spins per day. Min first deposit £20. Max bonus bet £5. Max bonus cash out £500. Wagering requirement of 40x to cash out. Bonus expires after 30 days. Free spins expire after 48 hours. Game restrictions apply. Further Terms Apply.
100% Bonus up to £100 plus 20 Free Spins
Fruity King: a review of offers, bonuses and promos Fruity King is a colourful slot and casino site from ProgressPlay. It offers online slots, casino games, and live casino tables including blackjack and roulette. The site has lots going on, so there is plenty to look at and explore. Review contents In this... Continue reading
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 Terms apply.
100% Match bonus on the 1st deposit up to £123
Fun Casino: a review of offers, bonuses and promos From the team behind All British Casino, Yeti Casino, and more, comes Fun Casino. What can you expect from a casino with fun right there in the name? Well, slot games, casino games, live casino tables and more await on this fun... Continue reading
New players only. Maximum bonus is £123. Max bet with bonus is £5. No max cash out. Wagering is 50x. Skrill and Neteller excluded. Eligibility is restricted for suspected abuse. Cashback is cash, so no wagering. Cashback applies to deposit where no bonus is included.
Spin the Mega Wheel to win up to 500 Free Spins on Starburst
Hyper Slots: a review of offers, bonuses and promos From Jumpman Gaming comes Hyper Slots, the rainbow-splashed outer space themed slot site. Enjoy all the benefits of a Jumpman site in this fun site; tonnes of great slots, free bingo, an exciting welcome offer- it’s all here. Review contents In this review: At a... Continue reading
New players only. Minimum deposit £10, £8 Max win per 10 spins, Max bonus conversion £250, 65x Wagering Requirements and Full T&Cs Apply.
Win up to 500 Free Spins on Starburst
Incredible Spins: a review of offers, bonuses and promos Step into Incredible Spins, a Jumpman slots site with a cool black and red colour theme. Sleek silver accents the darker colours, nicely setting off the site’s exciting welcome offer. Explore ongoing promotions which can enhance your experience and play, and find... Continue reading
New players only, min deposit £10, £8 max win per 10 spins, max bonus conversion equal to lifetime deposits (up to £250), 65x wagering requirements and full T&Cs apply.
100 Spins and 100% Cash Match on first deposit
Karamba: a review of offers, bonuses and promos Karamba brings the party to players with a wide variety of slots, instant games and scratchcards – on top of plenty of promos and bonuses. As well as its lively bunch of casino games, you can also try your luck on its sports... Continue reading
Terms and conditions apply. See the site for full details
Up to £500 Welcome Offer + 150 Bonus Spins
Kerching: a review of offers, bonuses and promos Kerching is a poster-paint bright slot site with hundreds of slot games to choose from, as well as exciting promotions to keep players entertained. Depositing and withdrawing is easy, and the welcome offer covers three deposits, not just one. Review contents In this review: At a... Continue reading
First 3 deposits only, Min deposit £10, Max total bonus £500 & 150 spins, 30x wagering (dep + bonus), 30x on spins, 5x conversion, selected slots only, full T&Cs apply. IGT, All Rights Reserved.Terms & Conditions
20 Free Spins on Signup - No Deposit Needed
LeoVegas: a review of offers, bonuses and promos LeoVegas is an absolute giant of a brand in the UK market, and once you’ve seen their site, you’ll understand why. The site is slick, with dynamic homepage backgrounds and tonnes of big-name slots advertised. There’s a no-deposit offer, a great first deposit... Continue reading
No Deposit Spins: 18+ New Customers only. Select Casino welcome bonus offer on sign-up. 20 Free Spins available on Book of Dead game only. Must be claimed on ‘’My Offers’’ page within 14 days of sign-up. Free Spins have a £0.10 value each; expire 7 days from claim. 35x wagering requirement on eligible slots before winnings are converted to cash. Eligibility requirements apply. Read full T&C's below. Play Responsibly. www.begambleaware.org
Up to £10 Free Bonus no deposit needed
mFortune: a review of offers, bonuses and promos mFortune is a popular site that has been running since 2007- surely one of the longest running online casinos. mFortune is still very much alive and kicking today, and it continues to provide a fun and entertaining experience for new and old players... Continue reading
18+. New players only. Welcome bonus expires after 7 days. Up to 10 (20p) free spins on Super Win 7s for 10 days, Min Deposit £10. Winnings paid as bonus credit. Expire 00:00 every day. Max withdrawal from free spins and welcome bonus winnings £50. Up to 200% deposit match of first deposit (Min £10). Max £100 awarded as bonus credit. 20x wagering on bonus credit. Withdrawing Unspent Qualifying Deposit will exclude the player from these promotions. T&Cs apply BeGambleAware.org
Up to 50 Free Spins, no deposit needed
Best Proprietary Slots Site in 2021 BingoPort Awards Mr Spin: a review of offers, bonuses and promos Mr Spin is a fun and exciting online slots site from Intouch Gaming. Its logo features a very cheerful lucky cat, and many players have flocked to Mr Spin in the hopes of a lucky win.... Continue reading
18+. New players only. Up to 50 (20p) free spins on Reel Royalty only. Winnings paid as bonus credit with a 20x wagering requirement. Bonus expires 7 days after registration. Max withdrawal from bonus winnings £50. 100% deposit match of the first deposit. Max £100 awarded as bonus credit. Withdrawing Unspent Qualifying Deposit will exclude the player from these promotions. T&Cs apply BeGambleAware.org
What is a slots bonus?
When a slot site offers a bonus, this is like money that can only be used on the site. The idea is that you can make your deposit stretch a little longer by playing with bonus as well as your own money.
Bonus money can’t be withdrawn, but if you play with it and meet the wagering requirement, you’ll be able to convert it to real cash, which you can choose to withdraw.
Not all players like to take bonuses, but for other players, good bonus offers are a must when choosing a site.
Which sites offer slots bonuses?
Most sites offer a bonus of some kind, and many of them offer slots bonuses.
- Often, sites offering both bingo and slot games will offer more bingo bonus than slots bonus
- Slot-only sites won’t offer any bingo bonus
- Some sites are cash-only (sometimes called no wagering) and these do not ever offer bonus money
- Some sites will let you use slots bonus on both slot games and casino games, others will not
- Look out for both welcome bonuses and bonuses for current players
Check the Promotions section of BingoPort’s reviews to see what kind of offers your chosen site tends to run. This will give you a rough idea if they are more focussed on bingo, slots, or casino.
Why is a slots bonus good?
Slots bonuses can be like gold dust, but why do players love them so much?
- You can play without dipping into your own deposit money
- Play for longer before depositing again
- Try a game you aren’t sure if you’ll like without wasting your own money
Many players choose a slots site to play on based on its welcome bonus and the deposit offers the site gives once they are a member.
What should I consider when taking a slots bonus?
Although slot bonuses can be super fun, you should always read T&Cs before claiming any offer, to make sure it’s right for you. Here are some things to bear in mind when considering a slot bonus offer:
- The winnings from a slot bonus will likely be in bonus too, and must be wagered before you can withdraw them
- Winnings from a bonus may be capped at a maximum amount
- Withdrawing before you have completed your wagering requirement will mean that you lose your bonus and any winnings gained from it
What is a wagering requirement?
A wagering requirement will come attached to a bonus. It is the amount that you must bet in order for your bonus (and any winnings from it) to turn into cash you can withdraw.
It is usually a multiple of the bonus amount, for example 5x, 25x, or 60x, and can be found in the T&Cs of any offer you see.
If you took a £10 bonus with a 5x wager requirement, you would need to wager (or bet) £50, and then your remaining bonus and winnings would convert into cash.
Can I win cash from slots bonus?
It is possible to win cash from a slots bonus:
- Meet the wagering requirement on the bonus
- Any remaining bonus and winnings will convert to cash
- This can be played or withdrawn as you choose
As with all gambling, whether or not you are able to win cash from your bonus will be a game of luck, but it does happen.
Can I get a slots bonus for free?
Most slots bonuses you will see are deposit bonuses. That means, you deposit, and the site will give you some bonus as a treat on top of your deposit.
No-deposit bonuses do exist, though they are rare. For these, you won’t need to deposit a penny to claim the bonus, although it is likely to just be a one-time offer for new players. Keep an eye out for regular bonus code promotions on slots sites.
Is a free slot bonus the same as a no deposit slots bonus?
For a no deposit slots bonus, you don’t have to deposit a penny of your own money to get the bonus. ‘Free bonus’ is a little more complicated.
The word ‘free’ might not necessarily mean that you don’t have to deposit, so make sure to check the offer carefully.
Think about it, when you get a free gift in a shop, it’s usually with a qualifying purchase. The bonus is still free- you’re not buying it- but to get it, you need to make a deposit. You end up with your deposit and the bonus both.
What is a free spin?
Rather than a bonus, you may be offered some free spins as part of a deposit offer. These work a lot like bonus, except they will be for a specific slot game only. You’ll get some spins on that slot, and whatever you win is yours.
It’s worth noting that there may be restrictions on this. Free spins may have a win cap, so you can’t win more than this amount on your free spins. They may also have wagering requirements attached to their winnings.
Do free spins pay out in slots bonus?
Free spins often do pay out in slots bonus, but sometimes, you’ll find they pay out in cash.
Most free spins will have a win cap, which is the maximum amount you can win on the free spins, and many will have a wagering requirement. This means anything you win on the spins will be in bonus that must be wagered.
However, free spins are very common on cash-only sites, where winnings will be in cash with no wagering requirements.
What is the best online slot site for slot bonuses?
It can be hard to compare hundreds of different slot bonus welcome offers, but BingoPort has made it easy. We have gathered the very best slot bonus offers from across the UK industry and listed the ones we recommend right here.