Free Spins No Deposit UK

Best UK Slot Sites – Play Slots Online

There is little doubt that we are spoilt for choice when it comes to slot sites in the UK. Due to there being so many good online casinos, it can be difficult to know which to choose.

Some may be attractive because of a lucrative welcome bonus. Others will have a vast collection of slot games. Then, some might offer the payment methods that you prefer.

Do you have the time to research each one yourself? Surely you just want to play on some of the best slot sites without the research?

This is where we step in! We have tested and reviewed each of the top slot sites that legally accept UK players. Only the very best of them have made our list of recommendations.

Top Online Slot Sites – 2021

1.

50 Free Spins on Book of Dead (no wagering)

✔ Zero wagering requirements!
✔ Real money back on every spin
✔ 3000+ casino games

First deposit only. 50 Free Spins on the Book of Dead slot. Min deposit £10. Excl. new players in N.I. Each Free Spin valued at 10p. OJO’s Rewards and Game Play policy applies.
2.

Unlock up to £100 Cash + 20 Wager-Free Spins

✔ Generous welcome bonuses
✔ Exclusive live casino games
✔ Great customer service

Full T&Cs apply. Deposit offers available across any two deposits. Both expire 7 days after registration & have 7 days to wager once claimed. Deposit £10, £25 or £50+ & wager 35x for a cash reward. Only cash stakes qualify & wagering contributions vary. 5 free spins on Book of Dead with each qualifying deposit, 3 day expiry. BeGambleAware.org. #ad
3.

100% up to £100 + 100 Free Spins

✔ 600+ online slots
✔ Lots of live casino games
✔ 4 welcome bonuses

T&Cs apply. Offer valid upon 4 deposits. New players only. 18+. Min £20 deposit. 35x wagering requirements.
4.

Win up to 500 free spins on Starburst

✔ Over 900 slots
✔ Offer bingo games
✔ Lots of free spins on 1st deposit

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. *18+ only. Please play responsibly. Begambleaware.org
5.

Win up to 500 Free Spins

✔ Over 800 slot games
✔ Many Slingo games
✔ Frequent promotions (weekly & monthly)

18+. New players only, min deposit £10, £8 max win per 10 spins, max bonus equal to lifetime deposits (up to £250). 65x wagering requirements. Full T&Cs apply
6.

Up to £1000 bonus + 120 spins

✔ Free spins on registration
✔ Exclusive casino games
✔ Generous welcome package

18+. New players only. Up to 100 FS on 1st deposit, 10 spins over 10 days. 24hr expiry. On Fire and Gold. Up to £1000 deposit match on first 5 deposits. Min £10 deposit. Dep1: up to 300%, Max £50. Dep2: up to 200%, Max £100. Dep3: up to 100%, Max £150. Dep4: up to 100%, Max £200. Dep5: up to 50%, Max £500. Bonuses and FS winnings subject to 40x wagering requirement. Withdrawing qualifying deposit excludes player from promotion. T&Cs apply,BeGambleAware.org
7.

500 Bonus Spins Welcome Offer

✔ 24/7 customer support
✔ 500 spins welcome bonus
✔ Daily bonuses from the promotions calendar

18+. New players only. One welcome package per player. Max bonus bet £5, Min deposit £20, 1st deposit: get 100 bonus spins, 2nd Deposit: get 75 bonus spins, 3rd deposit: get 125 bonus spins, 4th deposit: get 50 bonus spins, 5th deposit: get 150 bonus spins. All spins on slot game Book of Dead. Bonus funds must be used within 30 days and bonus spins within 7 days. Spins winnings credited as bonus. Bonus funds separate to Cash funds and are subject to 35x wagering requirements. Terms Apply. BeGambleAware.org.
8.

Win up to 500 Free Spins

✔ 20 free spins no deposit
✔ Jackpot bingo games
✔ Over 800 slots to play

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. *18+ only. Please play responsibly. Begambleaware.org
9.

20 Free Spins (no wagering)

✔ 20 free spins on 1st deposit
✔ No wagering requirements
✔ Exclusive bingo games

10 free spins credited on first £10 deposit on Stampede slot only, valued at 25p a spin. Free spins must be used within 48 hours of qualifying. All winnings are uncapped and credited to your real money balance. T&Cs apply
10.

100% Deposit Match Up To £50 + 20 Free Spins

✔ Around since 2005
✔ Large range of live casino games
✔ Great app on iOS & Android

18+. T&Cs apply.
11.

100% up to £300 + 100 bonus spins on Starburst

✔ Fun, new casino
✔ Large welcome bonus
✔ Collect Zee points for bonuses

18+. New players only. Min Deposit £20. Max Bonus Bet £5. Winnings from spins capped at £50. 100 Zee Spins on Starburst (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
12.

✔ Instant withdrawals
✔ 24/7 customer support

13.

100% deposit match up to £300

✔ Up to £300 welcome bonus
✔ Large number of jackpot games
✔ Exclusive games

New Customers Only. 100% deposit match up to £300. Min deposit £10. 50x wagering applies to bonus + deposit amount, playable on selected slots only. Bonuses must be accepted within 72 hours, are valid for 30 days, and wagering requirements must be completed in this time. Bonus amount can't be withdrawn. Max bet restrictions apply. Not all games contribute equally to wagering requirements. Deposits made with Paypal, Envoy, Neteller and Skrill are not valid for this promotion. T&Cs Apply
14.

Win up to 500 Free Spins

✔ Free spins on registration
✔ Over 450 slot games
✔ Jackpot bingo games

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. *18+ only. Please play responsibly. Begambleaware.org
15.

Up to £500 Bonus + 100 Free Spins

✔ 50 Free spins on sign-up
✔ Exclusive casino games
✔ Generous welcome bonuses

18+. New players only. Up to 100 free spins (FS18p) available after 1st deposit, awarded via 3 deposit boosts. FS award decided by feature game. All FS issued on Rainbow Slots. All winnings from FS are awarded as Bonus Credit with 40x wagering requirement. Up to £500 Welcome Bonus available via 3 deposit boosts (Min Deposit is £10 to qualify). Deposit 1: Up to 200% deposit match bonus, £100 maximum bonus. Deposit 2: Up to 150% deposit match bonus, £150 maximum bonus. Deposit 3: Up to 100% deposit match bonus, £250 maximum bonus. Deposit matches are applied, after deposit, as bonus credit with a 40x wagering requirement. Max withdrawal without depositing is £50. Withdrawing Unspent Qualifying Deposit will exclude the player from these promotions. T&Cs applyBeGambleAware.org

Before we add a slot site to our list, our team tests them over a period of weeks and months to get a firm feel of what they offer.

Even then, we have a minimum set of requirements before slot sites can make our list.

They are:

  • The slot sites must have a UKGC licence
  • Their customer support must be of a high standard
  • Plenty of payment methods should be available for players to use
  • The slots sites must be mobile-optimised

And, of course, they must have an excellent selection of top-quality slot games.

There is little left for you to do other than to read our reviews. Then, sign up to your chosen slot site, and start playing entertaining slot games.

We have done the hard part for you so you can enjoy the fun part.

Benefits of Playing Slots Online

In decades gone by, playing slot machines meant you had to get dressed and make your way to a pub or land-based casino.

This is no longer the case thanks to new slot sites. Not only that, online slot sites have hundreds of excellent slot games compared to only a handful.

It’s never been easier to play online slots from desktop or mobile devices.

Another benefit of playing online is that the games have higher RTP percentages. This stands for Return To Player.

Because of lower overheads, slot sites can offer higher RTPs which in turn gives players a better payout.

At land-based casinos, slot machines will give you around 90% RTP while at online casinos, the average is 96%. It’s possible to check the online slot RTP payout percentage by searching the game’s guide.

To do so click the “?” in the bottom corner of the game screen. This can change depending on the slot provider, instead of the “?” you may see a clickable “i” symbol.

Starburst Game Guide (RTP%)

As you can imagine, it is easier to mass-produce online slot games than physical ones too. This means that you will get access to new slot games at a faster rate than you would at your local casino. In fact, new UK casinos often launch with the latest slots.

Different Types of Slots

The significant thing about playing at online slot sites is that you have a huge choice of slot games to play. Not only that, but you also have a great variety of slot types to enjoy too.

You can play classic slots, progressive jackpot games with payouts into the millions. Then there are low volatility slots that provide more frequent wins but lower payout. Or the opposite, high volatility slots giving fewer wins but higher total wins.

At the best slot sites outlined on this page, you’ll have a wide range of games to play.

Video Slots

Video slots are the most common casino game you will find at the top slot sites.

They feature fantastic graphics, cinematic sound effects, innovative game mechanics, and many bonuses.

Essentially, these are modern slots that showcase the innovative talents of software providers. They provide the best gameplay for players.

Good examples of video slots are:

  • Starburst
  • Gonzo’s Quest
  • Bonanza
  • Game of Thrones
  • Book of Dead

Classic Slots

Think back to the fruit machines you used to play in the local pubs and clubs, these are your classic slots.

These usually feature 3-reels and a single payline, do not have many bonus features and are simple to play.

Of course, there are some classic slots that offer more such as Break Da Bank by Microgaming. This slot has 3-reels but also 5-paylines. Some have bonus features, as well as wilds, scatters, and mini-games.

Another way to spot a classic slot is via the symbols on the reels. Fruits, sevens, bars, and bells are the usual suspects. Generally, these slots are better suited to new players or those that like a simple way of playing.

Online classic slots include the below:

  • Jackpot Jester Wild Nudge
  • Lucky Diamonds
  • Ace of Spades
  • Wild Melon
  • Mystery Joker

Jackpot Slots

You can find the biggest money when playing progressive jackpot slots at the best slot sites UK. In fact, you could win jackpots in the millions, sometimes even tens of millions.

You might have read about the player that won €14,239,532.84  playing the popular progressive slot Mega Moolah.

Mega Moolah Biggest Jackpot Win

Other popular jackpot payouts have come on Hall of Gods, Mega Fortune, or Major Millions.

These slots can build the total prize pool to huge sums due to those jackpots being shared over a network. This differs from some slot games that have their own local jackpot.

Each time a player spins on one of these slots, it adds a percentage of their stake to that shared network jackpot. It continues to grow until one lucky player manages to scoop the lot.

The chances of winning a progressive jackpot are small but much like the lottery, you have to be in it to win it.

Branded Slots

Branded slots first emerged online in 2004 with Lara Croft: Tomb Raider by Microgaming. Since then, many slot developers have partnered with global franchises to release branded slots. These brands could be a television show, movie, music band, cartoon, or even a board game.

At the best slot sites, you are likely to find a plethora of branded slots to enjoy. Notable slots include:

  • Game of Thrones (Microgaming)
  • Jurassic Park (Microgaming)
  • Who Wants to Be a Millionaire (Big Time Gaming)
  • Guns ‘N Roses (NetEnt)
  • Narcos (NetEnt)
  • Planet of the Apes by (NetEnt)
  • Monopoly Big Event (Scientific Games)

Branded Slot Games

High Volatility

The volatility of a slot game is determined by the frequency and amounts it pays out. Volatility which is also known as variance ranges between low and high.

A high variance slot will payout less frequently than low variance slots but bigger wins when they do. The ability to land bigger payouts makes this type of slot one of the most sought by players. These are a particular favourite for high rollers.

You need patience and a large bankroll to stand a chance of success. But when those big payouts land, the rewards can be huge. High variance slots typically have lower RTP percentages, so take this into account.

The best examples of high volatility slots include:

  • Book of Ra (Novomatic)
  • Dead or Alive (NetEnt)
  • Book of Dead (Play’n Go)
  • Immortal Romance (Microgaming)

Low Volatility

On the flip side, a low volatility slot will pay out more frequently but payouts will be more modest.

They will give you lots of action and entertainment as you will never wait too long for your next payout. This type of slot will suit smaller budgets and those that want to play for longer to enjoy the gameplay.

One of the most popular slots at the top slot sites in the UK is a low volatility slot. Often considered the best slot release of the last decade is Starburst by NetEnt. It has 5-reels, 10-paylines, and a win-both-ways mechanic. Due to these features, this slot offers some of the best fast-paced action around.

Other notable low volatility slots include:

  • Thunderstruck II (Microgaming)
  • Wild Scarabs (Microgaming)
  • Bloodsuckers II by (NetEnt)
  • Enchanted Garden II (Real Time Gaming)

Slingo

Slingo is a game type that is a hybrid of slots and bingo. Gaming Realms acquired the Slingo intellectual property in 2015. Since then they’ve expanded the number of games and these can now be played at online slot sites.

Generally, Slingo games have one spinning reel and a 5×5 grid with numbers on it that you have to match, like bingo. You need to complete as many rows and columns as possible to reach a prize and bonus game. Along with this, there is the addition of wilds, super wilds, and extra spins like what you find on slots.

Games from Slingo Originals have been a popular hit with UK players. This comes as no surprise as the UK population enjoys both slots and bingo.

We’ve written a full guide on the best Slingo sites and games. Make sure to check it out if you’re curious about this game variant.

Online Slot Providers

Behind every great slot game at all the best slot sites is a slot developer.

These companies are responsible for the thousands of slot games that you’ll find at online casinos. Some providers are better than others. At UK slot sites, you will get to experience some of the best developers in the industry.

Each software developer has their own unique style. Make sure to check if the online casino has your favourite slot providers before registering.

NetEnt

Without a doubt, NetEnt is one of the biggest names in the iGaming industry. Founded in 1996, NetEnt has developed over 200 casino games and won many awards for some of them. You’ll be able to find their games at all the top UK casino sites.

NetEnt is known for innovative bonus features, fabulous graphics, and some of the most popular titles. They rarely let players down.

As well as the top slot games and progressive jackpots, NetEnt also offers RNG table games.

Our NetEnt slot recommendations:

  • Starburst
  • Dead or Alive 2
  • Narcos
  • Gonzo’s Quest
  • Mega Fortune Dreams
  • Hall of Gods

Microgaming

Another software developer that has been around since the year dot is Microgaming.

Microgaming has proved to be prolific at developing entertaining, well-designed slots.

In total, Microgaming has developed over 600 games with half of those being online slots.

You can expect a broad spectrum of Microgaming slot games too. Everything from classic slots, video slots, and progressive slots. These slots differ when it comes to varying themes, reel formats and bonus features.

Our Microgaming slot recommendations:

  • Game of Thrones
  • Mermaids Millions
  • Mega Moolah
  • Thunderstruck II
  • Break Da Bank

Red Tiger Gaming

Compared to Microgaming and NetEnt, Red Tiger is a relatively new software developer.

That said, it has not taken them long to establish themselves as one of the best in the industry. Found at many of the best slot sites in the UK, Red Tiger games are usually among the most popular.

Red Tiger adopts a quality over quantity approach, so their portfolio is not the biggest. But, you can expect their slot games to be innovative, entertaining, and have a superb animatic experience.

They’re probably best known for there daily jackpots network. You can find some of their games at casinos that have hourly, super and daily drop jackpots.

Our Red Tiger slot recommendations:

  • Rainbow Jackpots
  • Three Kingdoms
  • Mega Jade
  • Puss N Boots
  • Jingle Bells

Big Time Gaming (BTG)

Big Time Gaming has made some big moves in the industry in recent years, even though being founded in 2011. Most notably since launching the MegaWays slot mechanic. This win-any-way mechanic has revolutionised slot games.

It’s great to see their success and ability to challenge long-established names such as NetEnt and Microgaming.

Especially popular in the UK, you will find the entertaining slot games from Big Time Gaming at dozens of top slot sites.

You’ll see many Megaways slots developed by other slot providers too. This is because since 2018 BTG are now licensing out their trademark game mechanic.

Our Big Time Gaming recommendations:

  • Bonanza
  • Extra Chilli
  • White Rabbit
  • Star Clusters
  • Royal Mint Megaways

Play’n GO

Play’n GO is a Swedish developer that has been around since 2007. Since then it has become one of the leading software developers in the industry.

Where they stand out is that the core goal is not to be the biggest developer but the best developer. Still, they have over 100 titles to their name which means they have been quite productive over the years.

We’re sure you’ve heard of the slot game Book of Dead. This is the most popular title from Play’n GO and has become one of the go-to free spins games for UK slot sites.

Our Play’n GO recommendations:

  • Book of Dead
  • Reactoonz
  • Disco Diamonds
  • Fire Joker
  • Aztec Princess

Novomatic

Microgaming and NetEnt might spring to mind when you think of the oldest developers of slots. That is true when thinking of online slots, but Novomatic slot games have been around for land-based casinos since 1980.

Their online portfolio is not huge, but their extensive experience ensures each one is of a high standard.

Our Novomatic recommendations:

  • Book of Ra
  • Lord of the Ocean
  • Dolphin’s Pearl
  • Sizzling Hot

Mobile Slot Sites

Most slot sites are mobile-friendly these days. They would not last too long if they weren’t to be honest. Besides, we only feature slot sites that work well on both mobile and desktop devices. All online casinos should accommodate for mobile players, either by having a responsive product or by mobile apps.

In years gone by, online casinos didn’t have the mobile-first mentality. You would find complicated menu systems, small buttons, links, and cluttered lobbies that were designed for PC players.

These days, big buttons and no clutter is the way to go due to small screens being the preferred method.

The following are some of our recommended mobile slot sites UK:

1.

20 Free Spins (no wagering)

✔ 20 free spins on 1st deposit
✔ No wagering requirements
✔ Exclusive bingo games

10 free spins credited on first £10 deposit on Stampede slot only, valued at 25p a spin. Free spins must be used within 48 hours of qualifying. All winnings are uncapped and credited to your real money balance. T&Cs apply
2.

500 Bonus Spins Welcome Offer

✔ 24/7 customer support
✔ 500 spins welcome bonus
✔ Daily bonuses from the promotions calendar

18+. New players only. One welcome package per player. Max bonus bet £5, Min deposit £20, 1st deposit: get 100 bonus spins, 2nd Deposit: get 75 bonus spins, 3rd deposit: get 125 bonus spins, 4th deposit: get 50 bonus spins, 5th deposit: get 150 bonus spins. All spins on slot game Book of Dead. Bonus funds must be used within 30 days and bonus spins within 7 days. Spins winnings credited as bonus. Bonus funds separate to Cash funds and are subject to 35x wagering requirements. Terms Apply. BeGambleAware.org.
3.

Up to £500 Bonus + 100 Free Spins

✔ 50 Free spins on sign-up
✔ Exclusive casino games
✔ Generous welcome bonuses

18+. New players only. Up to 100 free spins (FS18p) available after 1st deposit, awarded via 3 deposit boosts. FS award decided by feature game. All FS issued on Rainbow Slots. All winnings from FS are awarded as Bonus Credit with 40x wagering requirement. Up to £500 Welcome Bonus available via 3 deposit boosts (Min Deposit is £10 to qualify). Deposit 1: Up to 200% deposit match bonus, £100 maximum bonus. Deposit 2: Up to 150% deposit match bonus, £150 maximum bonus. Deposit 3: Up to 100% deposit match bonus, £250 maximum bonus. Deposit matches are applied, after deposit, as bonus credit with a 40x wagering requirement. Max withdrawal without depositing is £50. Withdrawing Unspent Qualifying Deposit will exclude the player from these promotions. T&Cs applyBeGambleAware.org
4.

100% Deposit Match Up To £50 + 20 Free Spins

✔ Around since 2005
✔ Large range of live casino games
✔ Great app on iOS & Android

18+. T&Cs apply.
5.

50 Free Spins on Book of Dead (no wagering)

✔ Zero wagering requirements!
✔ Real money back on every spin
✔ 3000+ casino games

First deposit only. 50 Free Spins on the Book of Dead slot. Min deposit £10. Excl. new players in N.I. Each Free Spin valued at 10p. OJO’s Rewards and Game Play policy applies.

Best Slot Sites No Wagering

A slot site offering a huge welcome bonus does not mean it is the best online casino to choose. Online casinos usually create these bonuses to attract new players. But this does not mean it is a better casino than the next one.

In our opinion, there are more important factors in choosing a slot site. For example:

  • The variety and quantity of slot games
  • Quality of customer service
  • Payment methods offered
  • Whether the casino is mobile-friendly or not

Besides, big welcome bonuses usually means complicated and restrictive wagering requirements. Online casinos do not just hand over the money, they want to make sure you play-through that bonus. The number of times you have to play-through your bonus can be 25-65x before you can withdraw any winnings.

Luckily, some online casinos have given players some middle ground.

Rather than picking between no welcome bonus or a large bonus with high wagering, these casinos offer modest bonuses with no wagering!

PlayOJO and MrQ casino are two slot sites that have no wagering requirements. This isn’t just on their welcome bonus, but on all future bonuses too.

Generally, you’ll get a number of free spins upon making a deposit. Then, whatever you win from these spins is returned to your cash balance. You can withdraw this amount or keep playing on other slots.

50 Free Spins on Book of Dead (no wagering)

✔ Zero wagering requirements!
✔ Real money back on every spin
✔ 3000+ casino games

PLAY HEREPLAY HEREReview
First deposit only. 50 Free Spins on the Book of Dead slot. Min deposit £10. Excl. new players in N.I. Each Free Spin valued at 10p. OJO’s Rewards and Game Play policy applies.

20 Free Spins (no wagering)

✔ 20 free spins on 1st deposit
✔ No wagering requirements
✔ Exclusive bingo games

PLAY HEREPLAY HEREReview
10 free spins credited on first £10 deposit on Stampede slot only, valued at 25p a spin. Free spins must be used within 48 hours of qualifying. All winnings are uncapped and credited to your real money balance. T&Cs apply

Online slots with the highest payouts

We all want to win big payouts, otherwise, there would be little point playing slot sites at all. But, determining which slots payout the best is not as straightforward as you might think.

Sure, if you want the biggest payouts, you play progressive jackpot or high variance slots. These will give you the best chance at bigger single payouts but generally at the expense of a lower long term RTP.

RTP is the best way to determine which slots can make you the most money or minimise your losses over the long term.

They might not give you huge one-time payouts but you will get a better return for your money.

It’s important to remember to play slots as a form of entertainment. You should only spend what you can afford to lose.

Slot Sites FAQs

Which slot sites give free spins when joining?

You will find that most slots sites will give a welcome bonus of some kind. This could be free spins, a match deposit bonus, or sometimes even both.

You may even find some slot sites that give you free spins just for registering an account – no deposit needed. Our list of recommended slot sites UK will show the welcome bonus currently offered.

What are the top online slots to play?

There are thousands of different slots that can be played at the best slot sites. Each player has their own opinions on which are the best. But, generally, the most popular usually have amazing graphics, smooth animations, and fun bonus features.

Currently popular at the best slot sites is Starburst from NetEnt, and Book of Dead by Play’n Go. Then, any MegaWays slot game from Big Time Gaming or other providers are also very popular.

Are online slots rigged?

No, each slot on our list has a license from the UK Gambling Commission. The UKGC imposes strict rules and regulations for their licensees to adhere to.

This includes agreeing to have their games tested and audited for fairness and accuracy of RTP percentages. For those reasons, you can have the peace of mind that the slot sites we recommend are not rigged. It’s also why it’s important to play at UKGC-licensed casinos.

Do high limit slots pay better?

In short, yes. Basically, the more you can wager per spin, the more you will win when you land a symbol combination. It is relative, however.

Yes, a £50 spin that lands a 1000x payout will give you more than a 25p bet on the same slot but you stand to lose more if those spins don’t produce any wins.

A better way to determine how well a slot pays is through their RTP (return to player) percentage. You can expect to have better long-term success playing a 99% RTP slot than a 92% RTP slot.