UK's Best Online Slot Sites

Newly updated January 2019

Slots are the UK’s number one casino game, and it’s easy to see why. They’re super fun, easy to get the hang of and offer plenty of chances to win big- what’s not to like? To help you find your ideal place to play, we’ve hand-picked the very best slot sites on the market, from established brands to hot new casinos. Our recommended slot sites are packed full of the latest slot titles and offer the best bonuses out there. All that’s left for you to do is compare, sign up and start playing slots today!

Slots are the UK’s favourite online casino game – so we’ve lined up the top slot sites and a selection of the best new games to try out.

How to play at online slot sites

  1. Compare slots casinos

    We’re here to guide you through the hundred of UK slot sites on the market, starting off with our top casino list. Browse and compare the very best places to spin the reels online, along with the most attractive bonus offers to help you find your perfect match. Want to delve a bit deeper? Check out our expert casino reviews for everything from games libraries to banking options.

  2. Sign up

    Once you’ve settled on a top slot site, follow our link to take you straight to the sign up page. Creating your account will only take a few minutes, and you’ll just need some basic personal details like name, address and email. Want to claim your welcome bonus? Check if you need to opt in so that you don’t miss out on any free spins!

  3. Deposit

    You’ll need to make a deposit if you want to play slots online for real money. Head to the cashier and select your payment method- most casinos offer a range of banking options, from debit cards to e-wallets like PayPal. You’ll also need to deposit to claim your welcome bonus, so read up on the terms and conditions before you bag your freebie.

  4. Choose your game

    Make you way to the games library and see what’s on offer! Most UK slot sites offer hundreds of games, so there are plenty of exciting titles to choose from. Most slots are pretty easy to play, but we’d advise starting off with classic slots if you’re a beginner- their simplicity will give you a better feel for the game.

  5. Spin the reels!

    Picked out a game? Now there’s only one thing left to do: hit spin and hope the reels land in your favour! If you land a lucky win, you’ll then be able to cash in on your returns or use your winnings to keep playing. Enjoy!

Here is a comprehensive list of online casino sites with a large and varied selection of slot games:

  • Spin And Win
  • Aspers
  • Sloty
  • Casimba
  • Slots Million
  • Magical Vegas
  • Spinland
  • Casilando
  • Midaur
  • Casino Heroes
  • The Sun Casino
  • 21 Casino
  • Dunder
  • Fantasino
  • Wixstars
Show more

Top 10 Slot Sites - January 2019

UK LICENSED 
EXPERT REVIEWS 
MOBILE FRIENDLY 
FAST PAYOUTS 

TopRatedCasinos.co.uk is dedicated to helping customers find the best place to play online. Your safety and well-being is a priority, which is why all of our expert casino reviews are 100% honest and unbiased, and we highlight the key terms and conditions of every casino bonus we advertise. Whilst we accept commission from the casinos on our list of recommendations, and this may affect where they’re positioned on our lists, we only recommend casinos that we truly believe are safe and fair. Of course, we can’t rate and review every casino site, but we do make sure that only the best UK-licensed casinos make it onto our lists.

TopRatedCasinos.co.uk is dedicated to helping customers find the best place to play online. Your safety and well-being is a priority, which is why all of our expert casino reviews are 100% honest and unbiased, and we highlight the key terms and conditions of every casino bonus we advertise. Whilst we accept commission from the casinos on our list of recommendations, and this may affect where they’re positioned on our lists, we only recommend casinos that we truly believe are safe and fair. Of course, we can’t rate and review every casino site, but we do make sure that only the best UK-licensed casinos make it onto our lists.

  • RANK
  • CASINO NAME
  • USER RATING
  • SIGN-UP BONUS
  • BADGE
  • KEY FEATURES
  • PLAY NOW!
  • 1

    1632 user ratings

    Expert Review

    100% Up To

    £555

    +15 Spins on Registration

    More info
    New Customer Offer

    New players only. Max withdrawal free spins winnings of £100. No max withdrawal for deposit offers. Max bet £5 while playing with bonus funds. Wagering for all bonuses is 35x. Welcome bonus not granted upon Skrill and Neteller deposits.

    pay £100, play with £200

    18+ Please Gamble Responsibly. Click 'Claim Bonus' to view full terms and conditions

    Claim Bonus

    Top Games Selection

    100% Up To

    £555

    +15 Spins on Registration

    More info
    New Customer Offer

    New players only. Max withdrawal free spins winnings of £100. No max withdrawal for deposit offers. Max bet £5 while playing with bonus funds. Wagering for all bonuses is 35x. Welcome bonus not granted upon Skrill and Neteller deposits.

    pay £100, play with £200

    18+ Please Gamble Responsibly. Click 'Claim Bonus' to view full terms and conditions

    Claim Bonus
    Excellent Live Casino
    Perfect For VIP Players
    Live Chat Support
  • 2

    345 user ratings

    Expert Review

    200% Up To

    £500

    +30 Spins

    More info
    New Customer Offer

    1 bonus offer per player. Min. deposit £20. Max bonus bet £5. Extra spins on selected games only- must be used within 72 hours. Bonus funds expire in 30 days, unused bonus shall be removed. Bonus funds are 200% match up to £500 + 30 extra spins on 1st deposit, 25% match up to £800 + 25 extra spins on 2nd deposit, and 50% match up to £200 + 50 extra spins on 3rd deposit. Bonus funds are separate to Cash funds, and are subject to 40x wagering the total bonus, cash & extra spins.

    pay £100, play with £300

    18+ Please Gamble Responsibly. Click 'Claim Bonus' to view full terms and conditions

    Claim Bonus

    Top Games Selection

    200% Up To

    £500

    +30 Spins

    More info
    New Customer Offer

    1 bonus offer per player. Min. deposit £20. Max bonus bet £5. Extra spins on selected games only- must be used within 72 hours. Bonus funds expire in 30 days, unused bonus shall be removed. Bonus funds are 200% match up to £500 + 30 extra spins on 1st deposit, 25% match up to £800 + 25 extra spins on 2nd deposit, and 50% match up to £200 + 50 extra spins on 3rd deposit. Bonus funds are separate to Cash funds, and are subject to 40x wagering the total bonus, cash & extra spins.

    pay £100, play with £300

    18+ Please Gamble Responsibly. Click 'Claim Bonus' to view full terms and conditions

    Claim Bonus
    New, Modern Casino
    Great Bonus Offer
    Slick Mobile Design
  • 3

    765 user ratings

    Expert Review

    100% Up To

    £250

    Welcome Bonus

    More info
    New Customer Offer

    100% welcome bonus worth up to £250 is only valid for new players who have registered but have not made any deposit. The value of the bonus has a play through of 35 which must be met to validate any winnings deriving from it. The offer is valid for all payment methods available in Novibet, apart from Neteller and Skrill.

    pay £100, play with £200

    18+ Please Gamble Responsibly. Click 'Claim Bonus' to view full terms and conditions

    Claim Bonus

    Editor's Choice

    100% Up To

    £250

    Welcome Bonus

    More info
    New Customer Offer

    100% welcome bonus worth up to £250 is only valid for new players who have registered but have not made any deposit. The value of the bonus has a play through of 35 which must be met to validate any winnings deriving from it. The offer is valid for all payment methods available in Novibet, apart from Neteller and Skrill.

    pay £100, play with £200

    18+ Please Gamble Responsibly. Click 'Claim Bonus' to view full terms and conditions

    Claim Bonus
    Perfect For VIP Players
    Full PayPal Support
    Over 1,000 Games
  • 4

    790 user ratings

    Expert Review

    Up to 80 Free Spins on 1st Deposit

    More info
    No Wagering Requirements

    For every £1 deposited, 1 Free Spin will be credited to the players account up to 50 Free Spins (on Rich Wilde and the Book of Dead). Also, after the first deposit the player can claim an additional 30 Free Spins by visiting the Kicker Section. So the player can receive a total of up to 80 free spins. Please refer to the landing page for all the details.

    For every £1 deposited, 1 Free Spin will be credited.

    18+ Please Gamble Responsibly. Click 'Claim Bonus' to view full terms and conditions

    Claim Bonus

    Great on Mobile

    Up to 80 Free Spins on 1st Deposit

    More info
    No Wagering Requirements

    For every £1 deposited, 1 Free Spin will be credited to the players account up to 50 Free Spins (on Rich Wilde and the Book of Dead). Also, after the first deposit the player can claim an additional 30 Free Spins by visiting the Kicker Section. So the player can receive a total of up to 80 free spins. Please refer to the landing page for all the details.

    For every £1 deposited, 1 Free Spin will be credited.

    18+ Please Gamble Responsibly. Click 'Claim Bonus' to view full terms and conditions

    Claim Bonus
    Super Fast Payouts
    No Wagering Required
    Money Back On Every Bet
  • 5

    254 user ratings

    Expert Review

    Enjoy Up To

    £250

    +100 Bonus Spins

    More info
    Match + Spins

    Opt-in required. 18+ only. New customers only. First two deposits only. Maximum bonus is £250, plus 100 bonus spins. Bonus spins valid on select slots. Wagering Requirement of 45x Bonus Amount. Max bet £5 per bet. Max conversion £1,000. Neteller / Skrill deposits not permitted. Bonuses expires after 7 days. Full Terms & Conditions apply.

    18+ Please Gamble Responsibly. Click 'Claim Bonus' to view full terms and conditions

    Claim Bonus

    Brand New Casino

    Enjoy Up To

    £250

    +100 Bonus Spins

    More info
    Match + Spins

    Opt-in required. 18+ only. New customers only. First two deposits only. Maximum bonus is £250, plus 100 bonus spins. Bonus spins valid on select slots. Wagering Requirement of 45x Bonus Amount. Max bet £5 per bet. Max conversion £1,000. Neteller / Skrill deposits not permitted. Bonuses expires after 7 days. Full Terms & Conditions apply.

    18+ Please Gamble Responsibly. Click 'Claim Bonus' to view full terms and conditions

    Claim Bonus
    Full PayPal Support
    Huge Slot Jackpots
    Live Roulette Offer
  • 6

    2041 user ratings

    Expert Review

    20 Bonus Spins +

    Deposit £10 Play With £60

    More info
    New Customer Offer

    UK & IRL only. Deposits made with e-wallets are not valid for this promo. Bonus wagering x35 on eligible games. Winnings from bonus capped at £500. Spins available after bonus is redeemed/lost. 10 per day with no wagering. Full T&Cs apply

    pay £10, play with £60

    18+ Please Gamble Responsibly. Click 'Claim Bonus' to view full terms and conditions

    Claim Bonus

    Editor's Choice

    20 Bonus Spins +

    Deposit £10 Play With £60

    More info
    New Customer Offer

    UK & IRL only. Deposits made with e-wallets are not valid for this promo. Bonus wagering x35 on eligible games. Winnings from bonus capped at £500. Spins available after bonus is redeemed/lost. 10 per day with no wagering. Full T&Cs apply

    pay £10, play with £60

    18+ Please Gamble Responsibly. Click 'Claim Bonus' to view full terms and conditions

    Claim Bonus
    Full PayPal Support
    Popular Live Casino
    Superb Mobile App
  • 7

    1023 user ratings

    Expert Review

    100% Up To

    £300

    +90 Spins

    More info
    MATCH + FREE SPINS

    New players only. Minimum deposit of £20. Bonus spins are valid on selected games only, and subject to 35x wagering, and must be used within 10 days, otherwise any unused bonus spins shall be removed. Bonus funds are 100% up to £300 and separate to Cash funds. 35x (bonus + deposit) wagering requirements. £5 max bet with bonus. Bonus must be used within 30 days otherwise any unused bonus shall be removed.

    pay £100, play with £200

    18+ Please Gamble Responsibly. Click 'Claim Bonus' to view full terms and conditions

    Claim Bonus

    Top Games Selection

    100% Up To

    £300

    +90 Spins

    More info
    MATCH + FREE SPINS

    New players only. Minimum deposit of £20. Bonus spins are valid on selected games only, and subject to 35x wagering, and must be used within 10 days, otherwise any unused bonus spins shall be removed. Bonus funds are 100% up to £300 and separate to Cash funds. 35x (bonus + deposit) wagering requirements. £5 max bet with bonus. Bonus must be used within 30 days otherwise any unused bonus shall be removed.

    pay £100, play with £200

    18+ Please Gamble Responsibly. Click 'Claim Bonus' to view full terms and conditions

    Claim Bonus
    Exclusive VIP Club
    Beautiful Design
    Live Dealers
  • 8

    1908 user ratings

    Expert Review

    200% Up To

    £300

    Welcome Bonus

    More info
    New Customer Offer

    New & exclusive players only. £20 min deposit. To receive the bonus wager 20 x (deposit amount) within 21 days. To withdraw bonus & related wins, wager 50 x (bonus amount) within 21 days. This offer may not be combined with any other offer. Deposit balance is available for withdrawal at any time. General withdrawal restrictions & full T&Cs apply.

    pay £100, play with £300

    18+ Please Gamble Responsibly. Click 'Claim Bonus' to view full terms and conditions

    Claim Bonus

    Highly Trusted

    200% Up To

    £300

    Welcome Bonus

    More info
    New Customer Offer

    New & exclusive players only. £20 min deposit. To receive the bonus wager 20 x (deposit amount) within 21 days. To withdraw bonus & related wins, wager 50 x (bonus amount) within 21 days. This offer may not be combined with any other offer. Deposit balance is available for withdrawal at any time. General withdrawal restrictions & full T&Cs apply.

    pay £100, play with £300

    18+ Please Gamble Responsibly. Click 'Claim Bonus' to view full terms and conditions

    Claim Bonus
    Full PayPal Support
    Exclusive Bonuses
    7-Figure Jackpots
  • 9

    1378 user ratings

    Expert Review

    200% Up To

    £500

    +50 Bonus Spins

    More info
    MATCH + FREE SPINS

    18+. New players only. 1 bonus offer per player. Min. deposit £20. Max. bonus bet is £5. Bonus spins on selected games only and must be used within 72 hours. Bonus funds expire in 30 days, unused bonus funds will be removed. Bonus funds are 200% match up to £500 on your 1st deposit, 50% match up to £1000 on your 2nd deposit, and 75% match up to £500 on your 3rd deposit. Bonus funds are separate to Cash funds, and are subject to 35x wagering the total bonus, cash & bonus spins. Terms apply. BeGambleAware.

    Example: pay £100, play with £300

    18+ Please Gamble Responsibly. Click 'Claim Bonus' to view full terms and conditions

    Claim Bonus

    Editor's Choice

    200% Up To

    £500

    +50 Bonus Spins

    More info
    MATCH + FREE SPINS

    18+. New players only. 1 bonus offer per player. Min. deposit £20. Max. bonus bet is £5. Bonus spins on selected games only and must be used within 72 hours. Bonus funds expire in 30 days, unused bonus funds will be removed. Bonus funds are 200% match up to £500 on your 1st deposit, 50% match up to £1000 on your 2nd deposit, and 75% match up to £500 on your 3rd deposit. Bonus funds are separate to Cash funds, and are subject to 35x wagering the total bonus, cash & bonus spins. Terms apply. BeGambleAware.

    Example: pay £100, play with £300

    18+ Please Gamble Responsibly. Click 'Claim Bonus' to view full terms and conditions

    Claim Bonus
    Great Slots + Roulette
    Live Dealer Tables
    Loyalty Rewards
  • 10

    679 user ratings

    Expert Review

    200% Up To

    £400

    + 100 Spins

    More info
    New Customer Offer

    The winning of 100 Extra Spins is only valid for a period of 3 days. If a player fails to fulfill the wagering requirements within the period of 3 days, the Extra Spins and any winnings acquired via them will be forfeited. The wagering requirement must only be met from the real money balance on Net/Ent slots. The wagering requirement for the winning of Extra Spins is 35x the amount won after spinning the free spins.

    Pay £100, Play With £300

    18+ Please Gamble Responsibly. Click 'Claim Bonus' to view full terms and conditions

    Claim Bonus

    Editor's Choice

    200% Up To

    £400

    + 100 Spins

    More info
    New Customer Offer

    The winning of 100 Extra Spins is only valid for a period of 3 days. If a player fails to fulfill the wagering requirements within the period of 3 days, the Extra Spins and any winnings acquired via them will be forfeited. The wagering requirement must only be met from the real money balance on Net/Ent slots. The wagering requirement for the winning of Extra Spins is 35x the amount won after spinning the free spins.

    Pay £100, Play With £300

    18+ Please Gamble Responsibly. Click 'Claim Bonus' to view full terms and conditions

    Claim Bonus
    Excellent Live Casino
    New Slots Included
    Great Mobile Gaming

Online slots basics

Why play online slots?

Simple

Slots are about as straightforward as it gets when it comes to casino games. There’s no skill or strategy involved-just hit spin and hope your luck’s in. That’s not to say the simplicity of slots makes them any less exciting; entertaining themes, lively animations and thrilling bonuses mean there’s plenty of fun to be had.

Suits all budgets

Whether you’re a beginner, casual player or a casino veteran, there’s a slot for every kind of bankroll. From 1p penny slots to high roller progressive jackpots and plenty of betting opportunities in between, the power is in your hands. You can even play slots for free with free demo games!

Variety

Sure, classic table games like roulette and blackjack have their fair share of variations, but nothing rivals slots when it comes to the sheer volume of choices on offer.  Pretty much every software developer makes slot games, and many top slot sites boast over 500 exciting titles, so the possibilities are endless.

How to play online slots

While multiline video slots might first seem a bit daunting to new players, it’s actually pretty easy to get the hang of slots.Here’s how to play.

  1. Check the paytable

A paytable shows you how much you can win depending on your bet, as well as minimum and maximum stake options. Some use ratios to show potential payouts, while others use percentages or multiplier values, such as x3, for example. You’ll also be able to check for the game’s bonus features, such as multipliers, to see if there are any other ways to maximise your winnings.

  1. Set your stakes

In many slot games, players will bet with ‘coins’ that have a real currency value. The value of these coins may be set to a certain value, but if not, you’ll need to set these yourself. Make sure your coin value suits your bankroll- you don’t want to run through your budget in the first few spins.

  1. Select your paylines

Most slots feature multiple paylines, and betting on more lines can increase your chances of landing a win. Remember that the more paylines you bet on, the more you’ll wager, so don’t get too carried away!

  1. Hit spin

Once you’re happy with your wager all you need to do is hit spin- it really is that easy. You’ll certainly know about it if you do strike lucky; a message usually flashes up on the screen, along with some celebratory music. Any wins are automatically credited to your account, so all you need to do is sit back and see whether you land a winning combination.

Everything you need to know about online slots

We’ve touched on the basics, but there’s a whole load more to learn about online slots, as well what makes a great slot site. Our beginner’s guide covers all the need-to-know information, so let’s get to it!

Real money slots

You don’t actually have to deposit to play at UK slot sites, but if you want to be in with the chance of winning real money, you’ll need to play real money slots. Luckily, the huge range of betting options means you can wager as little or as much as you like on  these games. But you don’t need to have a huge bankroll to play real money slots: penny slots can be played for just 1p a spin, while other titles have relatively low bet limits, from around 10p. On the other end of the scale, maximum bets for large progressive jackpot games can go well into the hundreds, so there are plenty of wagering possibilities on offer with real money slots.

Free demo slots

The alternative to real money slots is free demo slots. These are available at pretty much all UK slots sites and all you need to do is create an account- no deposit needed. Of course, you can’t win real money on free slot games, but they’re great if you just want to play for fun. They’re also ideal for beginners easing their way into the slots scene, and give you a chance to familiarise yourself with pay tables and bonus features before trying out real money slots.

Slot variations

Slots come in all shapes and sizes, but they can generally be split into three categories:

Video slots

Video slots are typically 5-reel games make up the vast majority of games at the best slot sites. These variations have risen to the top of the charts thanks to their combination of entertaining pop culture themes, vibrant animations, HD graphics and an array of fun symbols. Most also spice things up a bit with exciting bonus features, such as wilds, scatters, multipliers, free spins and bonus rounds, which adds to the fun.

Many video slots also feature multiple reels and paylines, with some offering over 1,000 ways to win. Software developers are constantly vying to produce the most innovative video slots on the market, so there’s no end to the exciting possibilities.

Classic slots

If you’d rather keep things simple or are a bit of a casino purist, there are plenty of classic slots on offer at the UK’s best slot sites. These are 3-reel games that usually feature 1-5 paylines, and are a great place for beginners to start. For those after some casino nostalgia, expect classic fruit and seven symbols that take you back to the days of traditional fruit machines in brick-and-mortar casinos and arcades!

Just about every software provider has a few classic slots in the locker, so you can play them at all the best slot sites. IGT, which made its name making land-based slots back in the 90s, is particularly well-known for online classic slots like Triple Diamond, while the likes of Microgaming has also made top titles like Break da Bank.

Progressive jackpot slots

Some slot games offer fixed jackpots, but what many slots enthusiasts are really after are progressive jackpots. These increase every time someone places a new wager, meaning that certain slot titles, like Mega Moolah, have jackpots that can rise well into the millions.

Many progressive jackpot slots require players to make the maximum bet to win the full jackpot, but those with more modest budgets aren’t excluded from winning big. Slots like Mega Moolah have tiered jackpots that are often released at random, so there’s still the chance to land a sizeable windfall.

Progressive jackpot slots are usually high variance, too. This means that while they offer big prizes, they don’t pay out often-so you could very well run through your bankroll before you get a shot at triggering the jackpot. However, if you’re looking for the biggest prizes on the market, progressive slots might be right up your street.

Top online slots software providers

Whereas some casinos specialise in games from just one software provider, others feature titles from a wide range of developers. If you’re a fan of a particular brand, knowing which slot sites use its software can make finding your ideal casino that much easier.

Pretty much every casino software developer creates slots, including the likes of Novomatic, IGT, Play’n GO, Yggdrasil, Pragmatic Play, Betsoft, Playson to name a few. These all develop top slot games and are definitely worth trying out, but there are three software developers that dominate the industry- let’s take a look.

NetEnt

NetEnt is one of the biggest names in casino software development, and it shows by their collection of top slot games. Responsible for some of the most popular titles around, including Starburst, Gonzo’s Quest, and Jack and the Beanstalk, it’s safe to say that NetEnt’s reputation is well earnt. It also offers some of the biggest progressive slots in the business- Mega Fortune once paid out a massive €17.86 million to a very lucky Swedish player! NetEnt took home the gong for Innovation in Slot Provision at the EGR Awards 2016, as well as EGR Slot Provider of the Year in 2015, so you know it’s games are some of the best.

Microgaming

Like NetEnt, Microgaming is a market leader in the software industry and is particularly popular among slot fans. With famous titles like Hot Ink, Thunderstruck and Jurassic Park in its portfolio, Microgaming definitely knows its stuff. This developer also proudly holds the record of largest ever slot payout, when one fortunate player bagged a whopping £13 million progressive jackpot on Mega Moolah. Microgaming won the EGR Innovation in Slot Provision in 2011, and since then has taken home prestigious awards, such as iGaming Software Supplier at the 2018 International Gaming Awards.

Playtech

This software giant won EGR Slots Provider of the Year in 2013 and its quality software has continued to take home prizes ever since. Playtech made its name with a top collection of online slots including the likes of White King and Jackpot Giant, as well as iconic film and comic-themed titles, such as Gladiator and Superman. There’s also the progressive Age of the Gods, a wildly popular game that has sparked a range of spin-offs. Ugga Bugga and Goblin’s Cave feature some of the highest RTPs on the market—-99.07% and 99.32% respectively.

 

Mobile slots

Are you a fan of spinning the reels while on the go? If so, mobile compatibility will be a big factor when it comes to choosing your online slot site. Here’s what you should consider when you compare mobile slot sites.

Mobile optimised vs designed for mobile

Online slots used to be made using Flash, but now technology has moved on and the top developers create their games using HTML5. This means smoother, better functioning games that can be played seamlessly across different devices. Many software houses have optimised older Flash-based slots, adapting graphics and interfaces for use on touch screens.

Optimised slots run great on smartphones and tablets, but some mobile gaming enthusiasts may prefer titles designed specifically for mobile use. For example, you may prefer top slot sites that partner with developers like Play’n GO who specialise in mobile slots, rather than casinos that have a larger collection of mobile optimised older games.

Web app vs native app

Virtually every online casinos has a mobile web apps, which means you can play using your smartphone browser, but the very best casinos also offer native mobile apps. Of course, you can play slot games on both platforms, but native apps can provide higher quality gameplay because they’re developed specifically for the software on your device. Native mobile apps also offer faster loading times as they tend to store data on your device, rather than on a server, as is the case with web apps.

Native mobile apps also have the added bonus of push notifications so you can receive alerts on the latest slots bonuses and newest slots titles as soon as they become available. You can check out our expert reviews to get the low down on the apps of different UK slot sites, and it may be worth giving a few a test run yourself if you’re a fan of mobile gaming.

Slots bonuses

As the UK’s most popular online casino game, it makes sense that the top slot sites offer a range of exciting slots bonuses to fans. Here’s what’s on the market.

Free spins

Most of the best online casinos offer free spins as part of the welcome bonus for new players. These require you to make a deposit to claim your spins, and you can bag anywhere from 20-200 free spins depending on where you play. Some welcome packages reward you a set number of spins, while other bonuses increase bonus spins when you deposit more. Free spins are great a way to boost your slots bankroll and enjoy extended playtime on some top titles.

No deposit free spins

How about playing real money slots at an online casino without even having to make a deposit? This is exactly what you get with no deposit free spins, which are awarded simply for signing up. You won’t be able to bag as many as if you were to make a deposit— they usually max out at 10 or 20 free spins no deposit—- but they still give you the chance to play slots online and win real money without having to dip into your wallet.

Matched deposit bonus

While matched deposits can be used on games like roulette, poker and blackjack, they can also be used on slots. These offers reward you a bonus equal to a percentage of your first deposit, and they can range anywhere from 50%- 200%. So if you see a ‘200% deposit match up to £100’ offer, you could get a £100 cash bonus for a £50 deposit.

Regular promotions

The fun doesn’t stop once you’ve signed up—-the best UK slot sites are only too happy to offer plenty of regular bonuses to keep things interesting. Once common offer is happy hour free spins, where you can bag some freebies when you make a deposit during a certain time period. There’s also loyalty and VIP bonuses, where you build up points which can be exchanged for handy little extras like free spins.

Bonus terms and conditions

Casino bonuses are much loved by slots fans, but keep in mind that they come with strings attached.

Wagering requirements

Unless you bag a no wagering free spins bonus, then you’ll have to contend with wagering requirements. This means you need to wager your free spins winnings a set number of times before they can be withdrawn, which can make cashing in tricky.

Wagering contributions

Different casino games may also be assigned different wagering contributions, which is the percentage of wagers that go toward completing the wagering requirements. Generally 100% of bets on slots count as wagering contributions, but when it comes to games like roulette, blackjack and poker, often only 10%-20% of bets will contribute, and at some sites these games won’t contribute to wagering requirements at all.

Games restrictions

Most free spins bonuses are also restricted to certain games; free spins for Starburst — a favourite among NetEnt fans— is a popular offer. Other slot sites may use free spins bonuses to promote new slot games, so you’ll need to compare bonus terms to find what suits you best.

Time limits

You won’t have forever to use your free spins and meet the wagering requirements- you’ll need to take advantage of your bonus before it expires. This timeframe can be as short as a couple of days at some sites, so be sure the check the small print when comparing slot sites.

Max win limits

It’s unlikely that your free spins bonus is a free ticket to hitting the jackpot. Even if you can use free spins on progressive jackpot slots, and hit the jackpot, maximum win limits could mean you only see a percentage of that cash.

In-game slots bonuses

While the best slot sites all offer welcome bonuses and regular promotions to boost your bankroll, many individual slot games also feature a variety of in-game bonus features. These are the most common:

Wilds – Wilds act as a substitute for other symbols to increase your chances of landing a winning combination.

Stacked wilds – These wilds wilds stack up on top of eachother and can cover entire reels, meaning you’re even more likely to bag some returns.

Expanding wilds – As the name suggests, these wilds expand to substitute other symbols across the reels to create more winning opportunities.

Sticky wilds – Sticky wilds stick to the reels for a certain number of spins, so you’ll have a better chance of a win on the next turn.

Scatters – When a scatter appears on a reel it will unlock features such as free spins, bonus rounds or mini-games for added excitement—-and hopefully returns.

Multipliers – These sought-after symbols increase your winnings. The more multipliers you land, the more you’ll win.

Online slots RTP

If you want to start playing online slot games, then you should definitely know about the return to player (RTP). In short, the RTP is the percentage of wagers that a slot is designed to pay out over an extended period of gameplay.

So if a slot has an RTP of 90%, you can theoretically expect to receive 90% of your bets back in winnings over time. It’s important to know, however, that the RTP is based on an infinite period of gameplay, so the actual amount of returns can vary hugely, especially during short gaming sessions. Most slots have an RTP of over 90%, but generally anything over 97% is considered a high RTP.

RTP and variance

Variance refers to the frequency and size of wins for a particular slot. If a game has low variance, then it is expected to pay out small amounts often. High variance, on the other hand, refers to a slot that pays out infrequently but which can give you more chance of landing a big win when the reels do line up.

This means that a high RTP doesn’t necessarily mean you have a better chance of winning or that a slot is more profitable. For example, while a low variance slot with 97% RTP may payout small amounts frequently, a high variance slot with 92% RTP could pay out less often but be more likely to pay out a large windfall.

How to compare slots RTP

Luckily, comparing the RTP of slots is nice and easy. Under UK law, slot sites regulated by the UK Gambling Commission (UKGC) are required to display the full RTP for all online casino games. You’ll be able to check this by clicking on the ‘information’ or ‘?’ symbol once you load up a slot game.

It’s worth noting that it’s the software developers that set the RTP of games, rather than the casinos that host them. So while different slots have different RTPs, there won’t be any difference in the RTP of a particular slot, regardless of which slot site you choose.

How to choose a top online slots site

There’s an abundance of places to spin the reels online, but how do you pick the right one for you? Here’s what to consider when searching for your ideal slots site.

Licensing

First things first, you want to make sure that you’re playing at a casino with a valid UK Gambling Commission (UKGC) licence. This ensures that the site is safe and secure, that the games are fair, and that you’ll have access to player protection measures. It goes without saying that all our recommended UK slot sites are fully licensed, but you can check if a site’s licensed by looking for the UKGC logo in the web page footer of online casinos.

Games library

Noone wants to sign up to an online casino only to see that it’s missing their favourite title, so check out what’s on offer before you sign up. Most slot sites let you browse the games library before registering, so you’ll be able to see the video, classic and progressive jackpot slots on offer. You’ll also be able to check up on what software a casino uses, which is worth doing if you’re a fan of a particular developer.

Bonuses

Biggest isn’t always best when it comes to casino welcome bonuses. 100 free spins may initially seem more attractive than 20 free spins, but if the larger offer has higher wagering requirements or lower win limits you may be better off going with a smaller bonus. Remember to check the bonus terms and conditions before signing up, and while you’re at it see if there’s any regular promotions that catch your eye.

Payment methods

Most of the best slot sites offer a range of banking options these days, but the likes of PayPal, paysafecard and phone bill payments aren’t available at all casinos. You should also know that some payment methods, particularly Neteller and Skrill, aren’t always eligible for welcome bonuses. To help you out, we’ve made it easy to see what banking options are on offer at different sites-  check out our expert casino reviews for the need-to-know information.

Mobile compatibility

If you enjoy a quick spin of the reels while on the go or on your lunch break, mobile compatibility should be toward the top of your priorities. While most casinos have mobile friendly websites, not all offer native mobile apps. These can make gaming smoother and faster, and has added benefits such as push notifications, so it’s something to be mindful of if you’re a mobile slots enthusiast.

Withdrawal terms

You load up a slot, spin the reels and manage to land a lucky win. Now you’re probably going to want to cash in on your returns, right? This is why it’s important to check that a casino isn’t going to make you jump through hoops to withdraw your funds. Accepted withdrawal methods, processing times and minimum and maximum limits all fall under this category, and you can easily find out about all of them with our casino reviews.

Customer support

Chances are you’ll probably never need to use customer service, but it’s good to know it’s there just in case. Every licensed UK casino offers customer support, but some are more comprehensive than others. For example, you may want to check the contact methods—-phone, email, or live chat—-as well as whether your chosen casino offers 24 hour support or a more limited service.

Ready to play slots online?

Still with us? Great, because now you know everything you need to get started playing slots online. Whether you fancy some classic 3-reel titles, dazzling 3D video slots or taking a shot at a progressive jackpot, our recommended casinos have got you covered. Simply browse and compare our top slot sites to find your perfect match. Sign up and start spinning those reels today!

 

Online Slots: Your Questions Answered

Are online slots fair?

Yes, as long as you’re playing at a licensed online casino or slot site. Regulatory bodies, such as the Malta Gaming Authority (MGA) or UKGC, work actively to ensure that casinos are providing players with a safe and fair casino experience. This involves making sure that all games are properly tested and that the RTP is accurate, so players know exactly what they’re signing up for.

Can I claim slots bonuses on my mobile?

Yes. All the best slot sites allow players to claim bonuses on their mobile, and some even have exclusive bonuses for mobile players. Just remember to check the terms and conditions for any restrictions, as certain payment methods are sometimes restricted from bonus eligibility.

What’s the best strategy for playing slots?

There isn’t one. Slots is entirely a game of chance so, unlike poker or blackjack, there’s no element of skill that can help you win. It’s simply a matter of spinning the reels and hoping they land in your favour.

Can I play other games at top slot sites?

Yes. While some sites are dedicated solely to slots, most online casinos offer slots as well as a whole load of other games. This includes table games like blackjack, poker and baccarat, as well as roulette, video poker and live dealer games, so you can satisfy all your gaming needs in one place.

How do I withdraw my slots winnings?

Most top slot sites offer a range of withdrawal options, but certain deposit options such as phone bill and prepaid cards can’t be used to cash in. You’ll need to make sure you’re within the limits—-withdrawals usually start at £10. It’s also good to know that withdrawals aren’t instant like deposits, though e-wallets generally offer the fastest processing times Once you’re happy, simply head to the cashier page, select your payment method, key in how much you wish to withdraw and hit request.

Contributors

Daniel Bennett

As staff writer, Daniel offers his expertise in all things gambling, contributing to a number of topics on TopRatedCasinos.co.uk, including our casino reviews and strategy guides. Daniel is also an avid sports fan, with a strong interest in NBA and Premier League betting.

Danielle is a staff writer at TopRatedCasinos.co.uk. She contributes to all things casino, from our ‘how to play’ guides to tips on finding the best sites for your favourite casino games. Danielle also has experience writing about sports betting, covering a diverse range of sports including rugby and Formula One.

Alan is a staff writer at TopRatedCasinos.co.uk. He covers all areas of the online casino industry, from the newest slot releases to the latest live dealer technology. Alan is also a fan of sports betting, and spends most of his spare time watching and reading about football.