UK Online Slots

If you like play online slot games you have come to the right place.

With games starting from a penny, and chances to win extra change or a life-changing jackpot, online slots are packed with excitement, and it’s not difficult to see why they are the most popular games on the internet.

Whether you’re new to online slots, or a veteran slot game pro we cater for all your slot needs. From slot reviews, to slots casino reviews, and the latest and greatest bonuses, our team works hard to make sure you have everything you need at your finger tips.

At UK Online Slots, you will find a massive selection of slot games – Video Slots, Classic Slots, Progressive Slots. And, of course, new slot games – which we are always updating.

In addition to reviewing slots games, we also review the best UK slots casinos. While there are a lot of online casino’s not all of them are slot focused! We want to make it easier for you to find the best casinos to play slots.

*T&C’s apply to each of the offers below, 18+ new customer offer,, click “Play Now” for more details.

Our Top Casino's for Slots

  • play atSlots Heaven Slots Heaven review Slots Heaven

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    New customers. Spins: 200 in total with 40 given on first deposit, winnings given as bonus funds, 20x wagering. Spins and bonus wagering on age of the gods games only. Welcome bonus: £20 min deposit, max bonus £100, wagering 40x. Game weighting applies. Betting limits: slots – £5 all other games – 10% of bonus amount

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    The site has an Italian cuisine theme, which will surely whet your appetite for the casino’s enormous games selection, and a chubby cartoon chef serves as the site’s navigator.

    New players only. Deposit required. Bonus wagering 25x deposit + bonus, Extra Spins 35x. Bonus max bet £5. Max cashout from welcome bonus funds is £5000. Neteller/Skrill deposits do not qualify. Game weighting, Bonus Terms and General Terms and Conditions Apply.”

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    Almost all the video slots at Spinland Casino can be played in demo mode. Just move the cursor over a game and a “Play for Fun” tab will appear it available.

    18+. New players only. One bonus offer per player. Minimum deposit $20 Max bonus bet is $5 Bonus spins on selected games only and must be used within 72 hours. Bonus funds must be used within 30 days otherwise any unused bonus shall be removed. Bonus funds are 200% match up to $3,000 on your 1st deposit,50% match up to $250 on your 2nd deposit, and 100% match up to $250 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.

  • play atWilliam Hill William Hill review William Hill

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    The William Hill brand was established in 1934 and started out originally as a UK based sports betting site. While it’s still really well known for its sports betting

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  • play atSpinit Spinit review Spinit

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    The casino is safe and secure with the use of SSL data encryption technology. It has a huge selection of more than 1,200 games from a number of top software providers.

    18+ T&Cs Apply. New Platers Only. £10 minimum deposit. 40 x wagering. Bonus valid for 14 days. Minimum £5 wager required to activate 200 Free Spins. 20 Free Spins credited per day for 10 days after qualifying deposit/wager is met. Free Spins valid for 72 hours from credit.

  • play atMr Green Casino Mr Green Casino review Mr Green Casino

    Get up to £100 in Bonus Cash & 200 Free Spins

    Mr Green casino is a relatively recently established casino, as it was started in 2008, but it takes a creative, innovative approach to online gambling that really sets it apart from the rest.

    Terms and Conditions apply. New players only. 18+. 35x wagering applies to Bonus Cash and Free Spins. Deposit of £20+ unlocks a 100% Match Bonus up to £100 in Bonus Cash, subsequent wager of £20+ on slots unlocks 100 Starburst Free Spins and 100 additional Free Spins (5 per day over 20 days).

We Have Slots for all Tastes

There are literally thousands online slots casinos and obviously some are better than others, while some are even downright shady. Our team combs through the internet to find the best sites to play slots, evaluating each according to a list of criteria.

Below you can view our top slots picks. If they don’t tickle your fancy we have lots more. No matter what your Slot preference we have you covered.

Classic Slots

These slot games hark back to the old pub fruit machines, and they are still very popular among players. I go back to these when I’m feeling nostalgic. Generally they are very simple, with three or five reels and very little in the way of extra features. They’re great if you love simplicity, and you’re just looking for a relaxed session. However, they don’t have the bells and whistles of newer slot styles and this can make them a little boring after a while.


Click to view all Classic Slots Games

Video Slots

Most of the modern slots you’ll find out there are video slots. This means they are animated and feature sharp graphics, high quality audio and a ton of special features. Video slots are usually five reel, and they come with a whole range of different paylines. The special features and multiple paylines really amp up the excitement factor for me as they give me more ways to win


Click to view all Video Slots Games

Progressive Jackpots

If you’re looking for a slot that will really show you the money, you’ll want to play the progressive slots. Progressive slots are played across a whole network that spans the globe, and they work on the basis that a little bit of each wager is put into a pool. There have been some staggering wins on progressives, we’re talking multiples of millions here, and this is why they’re so popular.


Click to view all Progressive Slots Games

New Slots

New online slot games are released by software providers every month so there’s no excuse to be bored! At UK-Online-Slots you will find the latest slots releases and the casinos where you can play them.


Click to view all New Slots Games


How to Play Online Slot Games

It’s easy to play slots online. Most of them follow a format similar to classic land-based slot machines, and if you’ve never had a spin, then here’s our guide to getting started.

1 – Register with an Online Casino. Many casino’s offer free play demo slots to give you a taste.

2 – Make a deposit. Many casino’s have welcome offers and bonuses which include FREE Spins

3 – Choose any slot game that strikes your fancy. Once the game loads, you’ll have a screen with all the reels in front of you. Typically, at the bottom of the reels is a dashboard menu, where you can adjust your settings.

4 – In the dashboard, adjust your coin size. Coin size can range from a penny to £2 or more.

5 –  Then adjust the number of paylines you want to enable. Or in plain English, the number of lines you want to bet on. Some slots may have all paylines activated and you won’t be able to change this.

6 – Next, adjust the number of coins you want to bet on per line. Not all slots have this feature.

7 – The total bet per spin will be automatically calculated and show up on your dashboard. When you’re happy with it, you can press the ‘Spin’ button. Sometimes it’s the ‘Play’ button. In any case, it will be pretty obvious and you can’t miss it.

8 – When you get the hang of that, you can go into ‘Auto’ mode, sometimes called ‘Advanced’ mode. Here you can set the number of spins you want the game to spin by itself. If you hit a win or enter a special bonus game during those spins, then the auto-spin function will stop and you will be in charge to decide when you want it back on again.


Frequently Asked Slot Game Questions

What is Coin Size?

Coin size is important because everything in online slots, including your win, will be calculated through coins. So for example, if you win 100,000 coins and your coin size is £01, then it means you win £1,000.

What are Paylines?

A fruit machine or a classic slot is 3 reels, 1 payline. You win when you get 3 matching symbols in the middle row. With online video slots, you can get 5 reels with 25 or 50 paylines, sometimes even more. Your matching symbols don’t have to be in the middle row for you to win. A payline might be a zigzag through all the reels. You can see which are the paylines in the ‘Info’ or ‘Help’ section of the game. And don’t worry, the game auto-detects a win, so you don’t have to remember how the payline goes.

What are Slot Bonuses and Special Features?

There are a lots of bonus features and special games in online slots, where you can get free spins, or multipliers that multiply the size of your win. And of course, there are also bonuses from online casinos that give you extra credit to play with.

What is the difference between Download and Flash slot games?

Some online casinos offer their games through a software that you have to download. Normally this is an .exe file for Windows computers only. Other casinos offer their game through Flash, Instant Play, or HTML 5. In these casinos, there’s nothing to download – you just play in your internet browser and it works for both PC and Mac computers.

Can I play online slots for free?

Yes, definitely. Plenty of casinos offer demo versions of various slots, although there is no cash to be won in demo games. Look for bonuses and free spins if you want to play for free and still win cash. Some casinos offer no deposit bonuses when you sign up, so you can play a few free games before you decide to make a real money deposit.

Can I play slot games on mobile?

Generally yes. Most online casinos have a mobile version with the more popular slots readily available.  Some may require you to download an app. With HTML 5 sites, aka instant play, you can just go to the site in your phone or tablet’s browser, login and start playing. However, making slots available for mobile is a real process, so not all the games are available and some lesser-known slots from may only be available online in desktop casinos.