As we test and review online slot sites we have researched countless slots welcome bonuses to assess their value, strengths and weaknesses for our readers. Each bonus offers something a little bit different. Which is suitable for you will depend on how much you are planning to spend and which games you want to play, from high value bonuses to low wagering requirements, free spins to low minimum deposits.

This article has been written to help you find a bonus that best suits your deposit levels, game preference and attitude to wagering requirements.

Best UK Slots Bonus

Here are the top 10 UK slots bonuses as chosen by our team. Click straight through to the site to claim the bonus, or scroll down to read more about the pros and cons of each one.

1. Play OJO – 80 No wagering free spins on Book of Dead > Claim offer
2. Voodoo Dreams – 50 no wagering free spins on Book of Dead and 100% up to £50 > Claim offer
3. Betfred – 100 no wagering free spins on Blueprint Gaming slots > Claim offer
4. Casumo – 100% up to £25 and 25 Free Spins – no win limit > Claim offer
5. Temple Nile – 100% up to £500 and 60 Eye of Horus free spin > Claim offer
6. Spin and Win – 100% up to £500 > Claim offer
7. Spin Rio – Up to £200 and 100 spins on NetEnt slots on THREE deposits > Claim offer
8. MrPlay – Up to £200 and 100 spins on NetEnt slots on THREE deposits > Claim offer
9. Dream Vegas – 100% up to £300 and up to 150 free spins > Claim offer
10. PlayLuck – Up to £100 and 100 free spins on FOUR deposits > Claim offer

PLAY OJO BONUS KEY FACTS

• Free Spins valid on: Book of Dead
• Minimum Deposit: £10
• Spin Value: 10p
• Wagering requirements on free spins winnings – None
• Max cashout of bonus winnings – No limit

Who should claim this bonus?

In my opinion, this is the best slots bonus you will find in the UK right now. It will suit anyone whose first deposit is a minimum of £10 and who likes Play n Go’s Book of Dead. There are no restrictions on how much you can win and what you can do with those winnings. If you want to withdraw them all, you can. And there is no minimum withdrawal.

The only drawback is that you won’t receive a deposit match with your free spins. If you are looking for a match bonus to go with your spins, then have a look at the next offer in our list.

Find out more in our Play OJO review

VOODOO DREAMS SLOTS BONUS KEY FACTS

• Free Spins valid on: Book of Dead
• Minimum deposit – £20
• Spin value – 10p
• Wagering requirements on bonus – 30x bonus plus deposit
• Wagering requirements on free spins winnings – None
• Max cash out of bonus winnings: £500 on deposit bonus / No limit on free spins

If you like the sound of what OJO has to offer but want something more on top, then try this one from Voodoo Dreams. This offer will suit anyone whose first deposit is between £20 and £50 and who wants a deposit match to go with their ‘keep what you win’ spins.

On the face of it this offer is better than the OJO one. However, you cannot withdraw ANY winnings until you have met the wagering requirements associated with the deposit bonus.

Example:

I deposit £20 and get £20 free plus 25 Book of Dead spins. My wagering requirements are now £1,200 (30x £40). If I then win £20 with my Book of Dead free spins, I will STILL need to wager £1,200 altogether before I can withdraw. This raises the possibility that you might wager your free spins winnings whilst trying to meet your £1,200 target.

Something to think about …

Find out more in our Voodoo Dreams review

BETFRED SLOTS BONUS KEY FACTS

• Free Spins valid on: Blueprint Gaming slots
• Minimum deposit – £10
• Spin value – 10p
• Wagering requirements on free spins winnings – None
• Max cashout of free spins winnings – No limit

Who should claim this bonus?

Anyone who enjoys the following Blueprint Gaming slots: Beavis and Butt-Head, Eye of Horus, Fishin’ Frenzy, Slots O’ Gold Megaways Ted Jackpot King, The Goonies Jackpot King. This is a very good deal and only requires a deposit of £10 to claim the free spins. There are no wagering requirements and there is no win limit attached to this offer.

Of course, Betfred is not a pure slots or casino brand. However, it is a big, trusted name in UK gambling and the slots selection is very good.

Find out more in our Betfred Review

CASUMO SLOTS BONUS KEY FACTS

• Valid on: 20 Free Spins on Sahara Riches Cash Collect
• Minimum deposit: £10
• Spin value: 10p
• Wagering Requirements: 30x bonus and deposit
• Wagering requirements on free spins winnings: 30x
• Max cashout from free spins: No Limit

Who should claim this bonus?

This bonus is suitable for you if you are going to deposit between £10 and £25 and want to enjoy a match bonus and some free spins on a Playtech slot. Not many slot sites run their free spins on Playtech games, so if you are fan, this is a good shout.

The free spins winnings in this offer are paid out in bonus funds and come with a 30x wagering requirements so they are not as good as those offered by Play OJO or Voodoo Dreams. But if you want to play at a very high-quality independent casino with an unrivalled game catalogue and smart, modern website and app, this is a great choice. They also run hourly slots tournaments with £1,000s prizes.

Find out more in our Casumo review.

TEMPLE NILE SLOTS BONUS KEY FACTS

• Free Spins valid on: Eye of Horus
• Minimum deposit: £20
• Wagering requirements: 40x bonus and deposit
• Wagering requirements on free spins winnings: 40x
• Max cashout from free spins:  £20 on free spins

Who should claim this bonus?

Deposit matches over £100 are a rarity these days and this is one of the biggest on the market right now. If you are interested in making a first deposit of more than £100 then this is a good option for you. Keep in mind though that the wagering requirements are a little stricter than you find on smaller bonuses at 40x bonus plus deposit. There are also 60 Eye of Horus (Blueprint Gaming) free spins with this deal. However, there is a strict £20 win limit on those spins.

Temple Nile is a White Hat Gaming casino with a big slots catalogue. The promotions here are geared up towards big spenders.

Read more in our Temple Nile review

SPIN AND WIN SLOTS BONUS KEY FACTS

• Minimum deposit: £10
• Wagering requirements: 40x bonus and deposit
• Max cashout from bonus winnings: 5x bonus value

Who should claim this bonus?

Another bonus suitable for those looking to spend between £100 to £500 is this one from Spin and Win, a Rank Interactive site. It has slightly tighter restrictions than the Temple Nile Bonus. It comes with the same higher than average wagering requirement at 40x bonus plus deposit but it also limits your wins to 5x the bonus value. So, if you deposit £200 and receive a £200 bonus then your wins are limited to £1,000 (5x £200).

Note: we don’t recommend this bonus if you are making a first deposit of under £100. There are better deals out there for those depositing between £10 and £100.

Find out more in our Spin and Win review

SPIN RIO SLOTS BONUS KEY FACTS

• Free Spins valid on: 100 Free Spins on Starburst, Finn and the Swirly Spin, Aloha! Cluster Pays and Book of Dead
• Minimum deposit: £10
• Deposit Bonuses: 1^st – 100% up to £50; 2^nd – 50% up to £75; 3^rd – 50% up to £75
• Wagering requirements: 35x bonus
• Wagering requirements on free spins winnings: 35x
• Max cashout from free spins winnings: £100

Who should claim this bonus?

If you want a bonus spread over more than one deposit then this is a great offer for you. It allows you to make three deposits of as little as £10 and pick up a bonus each time. The wagering requirements are good at 35x the bonus only, and after your first deposit you get 20 spins per day for five days on the most popular NetEnt and Play n Go slots. The cap on winnings from each deposit bonus and free spins is £100.

This is a really good bonus if you plan to make smaller deposits of between £10 and £50 and like a few free spins with your match bonuses.

Read more in our Spin Rio review

MRPLAY SLOTS BONUS KEY FACTS

• Free Spins valid on: 100 Free Spins on Finn and the Swirly Spin, Aloha! Cluster Pays and Book of Dead
• Minimum deposit: £10
• Deposit Bonuses: 1^st – 100% up to £50; 2^nd – 50% up to £75; 3^rd – 50% up to £75
• Wagering requirements: 35x bonus
• Wagering requirements on free spins winnings: 35x
• Max winnings from free spins: £100

Who should claim this bonus?

This bonus will suit anyone wanting to benefit from multiple bonuses of between £10 and £50.

Like Spin Rio, MrPlay is an Aspire Global casino. This offer has a similar configuration with a slightly different choice of slots for the free spins bonus. There is no Starburst but you can play Aloha! Cluster Pays instead. The wagering requirements are average at 35x and the 100 cap on wins is the same as at Spin Rio.

Read more in our MrPlay review

DREAM VEGAS SLOTS BONUS KEY FACTS

• Bonus Details: Up to £100 deposit – 50 spins; up to £200 deposit: 100 spins; up to £300 deposit: 150 spins
• Minimum deposit: £20
• Deposit Bonus: 100% up to £300
• Wagering requirements: 35x bonus and deposit
• Wagering requirements on free spins winnings: 35x
• Max cashout from free spins winnings: £100

Who should claim this bonus?

This is a good bonus for those depositing more than £100 and particularly those depositing up to £300. Due to the high maximum bonus available, the wagering requirements are higher than average at 35x bonus PLUS deposit. So, if you are only depositing in the £20 to £100 range I would avoid this offer and take one from MrPlay or Spin Rio instead where the wagering requirements are set to 35x bonus only.

If you are a fan of Stabrurst and Aloha! Cluster Pays and making a high value deposit, even better – you’ll get 150 spins on your favourite games, something that is hard to find elsewhere.

Read more in our Dream Vegas review

PLAYLUCK SLOTS BONUS KEY FACTS

• Free Spins valid on: Starburst, Book of Dead, Legacy of Egypt
• Minimum deposit: £20
• Deposit Bonuses: 1^st – 50% up to £50; 4^th – 50% up to £50
• Wagering requirements: 35x bonus
• Wagering requirements on free spins winnings: 35x
• Max winnings from free spins: £100 per deposit

Who should claim this bonus?

This is a great bonus package for those who want to enjoy rewards on their first FOUR deposits, giving you ample opportunity to sample what Play Luck has to offer. The caveat here is that the two deposit bonuses are only 50% and you need to put £20 down each time. But you do get 100 spins in total to play Starburst and Book of Dead.

Read more in our PlayLuck review

An important feature of online slots bonuses are the wagering requirements. These are put in place by a casino to limit the losses from bonus money given out to players. A player must wager to the value set out in the terms and conditions of the offer before their bonus is converted to real money and their winnings are made withdrawable.

Here is an example:

At PlayGrand you get 100% up to £100 bonus with a 35x the bonus value wagering requirement. If I deposit £20 and get a £20 bonus, then I must wager £700 (35x £20) before my bonus is converted to cash and my winnings become withdrawable.

This sounds like a lot, but remember, as you wager you will be winning money back so you don’t need to start with £700 to meet your requirements.

The most favourable wagering requirements are on the value of the bonus only. Beware, often they will apply to the value of the bonus PLUS the deposit. For example, the wagering requirements at Skol Casino are 35x the bonus plus the deposit.

Finding the right bonus will depend on your budget, your game preferences, and your attitude to wagering requirements. Here are some important questions to consider when deciding which bonus to go for.

It’s important to find the right bonus at your deposit level.

The minimum deposit required to trigger a bonus will vary from one site to the next. There are some good bonuses available at the £10 level. Our best bonus, Play OJO’s 50 ‘no wager’ free spins, for example. If you are depositing £20 or more then there will be more options for you. However, as the maximum bonus value increases, the wagering requirements often get tougher too. For example, the wagering requirements at Spins and Win for a 100% match up to £500 are 40x the bonus and deposit.

We recommend the following bonuses for each deposit level:

Many free spins bonuses are configured with a maximum cashout value from winnings generated to limit the liability of the casino. But there are a few with no cashout limit at all.

Here are FIVE slots bonus with NO cashout limits:

• Play OJO – NO limit
• Betfred – NO limit
• Casumo – NO limit
• PlayGrand – NO limit
• BacanaPlay – NO limit

You should also think about the kind of slot site you want to play at. You can choose to play at a white label slot site, an independent slot site or even a sportsbook with casino games. Whatever you decide, make sure that your site is licensed by the UK Gambling Commission as that will ensure that it is safe and fair.

Keep checking back as we add more bonuses every month.

Good luck and have fun!