Best Slot Sites 2021

Online slot sites have become a mainstay of internet entertainment, giving access to 1,000s of slots, jackpots, free spins and bonus features.

There are now hundreds of UK websites claiming to be the best site for slots, new games and bonuses – but how can you tell? Where do you sign up? What is the best option if you deposit? Can you play free? Is it trusted?

On this list, we’ll take you through the best online slot websites to sign up in 2021. Trustworthy UK casinos with lots of new games content, top slot providers and popular welcome bonuses.

What is an online slots site?

UK slots sites let you stream online slot games using free play or real money credits. You don’t download the slots, but instead play the games live on your devices – such as a laptop, iPad or smartphone – using wi-fi, data roaming or an internet connection. In the UK, slot sites must be licensed and regulated by the UK Gambling Commission.

Top UK sites to play online slot games

  • 1Karamba Casino

    Karamba first hit the UK in 2005 and is one of the best slot sites for regular new games. It boasts jackpots, exclusive content and 600+ online slots. You can play free or with real money, and there’s weekly leaderboards and tournaments.

    Karamba Review

  • Karamba Casino Slots Site
    Welcome Bonus

    100% Up to £50 + 100 Spins
    Terms and Conditions apply. New players only. 18+. Min deposit £10. Wagering requirement apply 35x. Offer valid for 72hr. 100 spins includes 3 deposit.
  • 2All British Casino

    Britain’s fully dedicated top UK slot site, All British Casino is the super-exclusive website for slot games with cashback. It’s also packed with Slingo, the prize-heavy game that combines slots and bingo – it’s also incredibly cool.

    All British Casino Review

  • All British Casino Online Slots Website
    Welcome Bonus

    Get 100% up to £100 + Always 10% Cash Back
    New UK Players only. 18+. Maximum bonus is 100% up to £100. Min deposit is £20. No max cash out. Wagering is 35x bonus. Maximum bet while playing with a bonus is £5. Eligibility is restricted for suspected abuse. Cashback is cash with no restrictions. Skrill & Neteller deposits excluded. Cashback applies to deposits where no bonus is included. Full t&c’s apply
  • 3888 Casino

    888 is open to slots players who prefer bonus money with their registration. As one of the longest-running welcome bonuses, 888’s free £88 Freeplay is still solid. It’s also home to top slot games, new games and 888 exclusives.

    888 Casino Review

  • 888 Casino
    Welcome Bonus

    Play with £88 free no deposit needed + up to £100 bonus
    18+, new customers only, T&Cs apply, variable wagering, min deposit £20.
  • 4Bgo Casino

    Bgo is a bit of one-stop shop for online slots, tournaments and daily jackpots – it also serves 1100+ games. If you’re looking for a site with no shortage of promotions, Bgo Casino comes fully loaded with extras. The 500 free spins Mega Wheel is also worth a spin when you sign up.

    Bgo Casino Review

  • Bgo Casino UK Slots Site
    Welcome Bonus

    Win up to 500 Free Spins on your first £10 deposit
    18+, new customers only, UK only. Win up to 500 spins from Mega Wheel on 1st deposit. 24-hour expiry. Max bet £2.50, Max Spins win £8 per 10 spins, Max Bonus win £150, selected games & 65x wagering on winnings. Min deposit £10. No Neteller/Skrill. Full T&Cs apply.
  • 5Mayfair Casino

    Nektan’s platform has always been top-notch, but Mayfair Casino London is the best slot site to use the software. With new slots added each week, daily drops & wins plus multiple top game providers – this website is stylishly entertaining.

    Mayfair Casino Review

  • Mayfair Casino Online Slots
    Welcome Bonus

    Up to £400 + 175 Spins
    18+, new customers only, Over first 3 deposits, T&Cs apply, 30x wagering, min deposit £10.
  • 6Watch My Spin

    Hands down the best place to catch free demo games, Watch My Spin is one of the top online slot websites to sample slots. Watch My Spin is known for fun mobile casino games, but actually has a ton of great online slots, too. You won’t be disappointed with the new games at this easy-to-use Nektan website.

    Watch My Spin Casino Review

  • Watch My Spin Casino
    Welcome Bonus

    100% up to £50 + 50 Spins on Starburst
    *New players only. 100% Match on 1st Deposit, Min dep £10. Max bonus £100 and 50 spins on Starburst. 40x wagering (dep + bonus), 40x wagering on spins, 4x conversion. Full T&Cs apply.
  • 7Silver Fox Slots

    Silver Fox Slots is certainly one of the coolest slots websites. Trustworthy Betable software allows its players to play anything. That includes top picks, categories, demo games and new slots – there’s also built-in slot search. But it’s the action slots category that makes Silver Fox one of the top slot sites in 2020.

    Silver Fox Slots Review

  • Silver Fox Slots Casino
    Welcome Bonus

    Deposit + Stake £10 Get 50 Bonus Spins
    18+, New customers only. First deposit only. Min Deposit and stake £10 on slots only. Claim required, can only be claimed once. Max 50 bonus spins on Starburst. 40x wagering,6x conversion, £5 max bonus stake. T&Cs apply.
  • 8Energy Casino

    Energy Casino is one of those sites that doesn’t offer a welcome bonus. But don’t let that put you off. You can do the usual stuff like play games, enter slots tournaments and deal yourself in at the live casino – but as long as you’re a member, you’ll earn EnergyPoints. Every time you play for real money, you’ll earn points that you can trade for free spins and bonuses.

    Energy Casino Review

  • Energy Casino
    Welcome Bonus

    Play for real money and earn EnergyPoints

Slot Sites – Choose the right websites to play top slots

The right online slots website can you save you from jumping between casinos looking for bonuses, new games and fresh promotions. Here is how you find a top slots site that covers everything you need.

But before we go any further, let’s recap on our best sites to play slots in 2021.

  1. Karamba Casino
  2. All British Casino
  3. 888 Casino
  4. Bgo Casino
  5. Mayfair Casino
  6. Watch My Spin Casino
  7. Silver Fox Slots
  8. Energy Casino

What types of casinos can you join?

  • Slingo sites: These casinos feature sub-sections or smaller game categories of Slingo, an online game hybrid of slots and bingo. While Slingo is cheap to play for real money, some sites let you play Slingo free without downloading.

  • Online slots casinos: You can play hundreds and sometimes thousands of games at online slots sites, casinos loaded to the hilt with content from Play’n Go, NetEnt and other top developers. Whether its free play, real money or bonus spins when you sign up – these websites are 95% slot games.

  • Live casino: Some slot sites come with integrated live casino rooms, dealers that stream games live in real-time. You can play roulette, blackjack and other casino table games with real dealers calling the shots. If you’re looking for the full works, a side order of roulette to go with that main of online slots will do the trick.

  • New slots sites: In 2021, new websites to play slots launch each week – but they’re not all good. Finding the right casinos can take time as brands build their profiles, games catalogues and trust with players. While new slot sites might offer the best welcome bonuses, they can often lack the content found at more established casinos. That said, new sites mean fresh promotions, software improvements and design corrections – if they get it right.

  • Top slot sites: They offer all the real money gaming, free play or bonuses you could ever want – these are the casinos top of their food chain. Regulated by the UK Gambling Commission, the best websites to play online slots are compliant, fair and follow the rules. Often brimming with promotions, slots tournaments and loyalty clubs, the top sites will always come up with ways to reward their players. Security? Check, new slot games? Absolutely, variety? Add it to the list. These are the sites that we will focus on in this article.

How do I choose the best slots websites in 2021

There are many varieties of online slot sites to suit all sorts of players and budgets, but in the end they all do the same thing: allow you the chance to win real money by gambling on casino games. Consider the following questions to help narrow down your search:

  • Real money, free play or both?