Look no further for a complete list of the best welcome bonuses in the UK.

We have compiled a list of the biggest and best welcome bonuses with regularly updated casino bonus information.

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netbet casino logo
Up to 100 Free Spins

Full T&C's Apply. 18+

  • On Registration
  • Starburst XXXtreme
  • Code: WHEEL
mr free slots casino logo
20 Free Spins

Full T&C's Apply. 18+

  • Just Sign up
  • Multiple Bonuses
  • Slots & Bingo
leovegas casino logo
10 Free Spins

Full T&C's Apply. 18+

  • Book of Dead
  • £100 Deposit Bonus
  • 20 Wager Free Spins
yeti casino logo
23 Free Spins

Full T&C's Apply. 18+

  • On Registration
  • Starbust and Joker Pro
  • 100% up to £111 Bonus
karamba logo
£50 Casino Bonus

Full T&C's Apply. 18+

  • 20 bonus spins
  • Fruity Friends
  • 100% bonus
duelz casino logo
£100 Casino Bonus

Full T&C's Apply. 18+

  • 100 Free Spins
  • Book of Dead
  • Minimum deposit £20
vegasspins logo
Win 777 Free Spins

Full T&C's Apply. 18+

  • Starburst
  • Spin the wheel
  • New casino
lasvegascasino casino logo
£200 Casino Bonus

Full T&C's Apply. 18+

  • 20 Bonus Spins
  • Book of Dead
  • 100% Match Bonus
royalvalley casino logo
£100 Casino Bonus

Full T&C's Apply. 18+

  • 100 Bonus Spins
  • Wagering x30
  • 100% Deposit Match
playzee logo
£300 Casino Bonus

Full T&C's Apply. 18+

  • 100% bonus
  • 100 Zee-spins
  • Starburst
avengerslots logo
Up To 500 Free Spins

Full T&C's Apply. 18+

  • Mega Reel spin
  • UK online casino
  • 500+ slots
avengerslots logo
50 Bonus Spins

Full T&C's Apply. 18+

  • Starburst
  • £10 Minimum Deposit
  • 10x wagering
monster casino logo
50 Bonus Spins

Full T&C's Apply. 18+

  • Book of Dead
  • £20 Min. Deposit
  • Weekend Cashback
freespinswizard casino logo
100 Free Spins

Full T&C's Apply. 18+

  • On Registration
  • Limited time offers
  • No wagering offers
casinocasino casino logo
10 No Deposit Spins

Full T&C's Apply. 18+

  • San Quentin
  • 10% Cashback
  • 100% up to £100
freeslotsgenie casino logo
100 Free Spins

Full T&C's Apply. 18+

  • No Deposit Required
  • No Wagering Offers
  • Huge Bonuses
ladyasia casino logo
200% up to £1000

Full T&C's Apply. 18+

  • 50 Bonus Spins
  • Cash Bandits 3
  • Code: WELCOME-1
yourfavouritercasino casino logo
500 Bonus Spins

Full T&C's Apply. 18+

  • Starburst
  • £10 Minimum Deposit
  • Spin the Mega Reel
bonnie casino logo
20 Free Spins

Full T&C's Apply. 18+

  • £10 Bingo Bonus
  • 5 Free Bingo Tickets
  • Code: BONNIE

Biggest Welcome Bonuses in the UK

Welcome bonuses are rewards given to new players when they first register at an online casino. These bonuses vary depending on which casino platform you are registering with and their terms of service. Welcome bonuses are the first impression that a customer gets when creating an account.

In most cases, they tend to be lucrative to entice the customer to join the website. However, you need to understand the rules about these bonuses before accepting them. Failure to do so might lead to disappointment when cashing out any earnings if all the associated terms and conditions have not been adhered to.

Welcome bonuses can also be used to entice players to play new or popular games in the casino. Often bonus spins are awarded as part of the welcome deal. These kinds of bonuses are aimed at novice players as well as those who have played casino games before but are new to the casino.

To help you identify casinos that offer welcome bonuses, we do the research as not every bonus available is worth trying. The best offers are often provided by brand new casinos, but you will also find good deals from established brands, so it is always worth comparing deals.

Best Welcome Casino Bonus

New Casino Bonuses

These are bonuses offered by new casinos that are looking to establish themselves in the market. Generally, they consist of a generous match deposit bonus.

This means that you will need to contribute some of your own money as a deposit in order to claim the bonus As part of the new casino bonus, you might also benefit from a number of free spins. You can check out our list of the best new online casino sites offering a new casino bonus. Then you simply need to register and fulfil their requirements for the bonus and use it to your advantage.

New casino bonuses are usually non-withdrawable. Such bonuses are also known as sticky bonuses. However, the amounts that are withdrawable are the winnings resulting from using those bonuses to place bets on games. Similarly, any amounts won from free spins will also be withdrawable.

However, in both cases there are likely to be further terms and conditions, such as wagering requirements and time limits, that must be fulfilled before any winnings can be withdrawn. New casino bonuses will vary depending on the jurisdiction under which the casino is licensed and the country they are operating in. Check out our list of the best new casino bonuses.

No Deposit Bonuses

A no deposit bonus is usually offered as either a small amount of casino credit or as free spins for different slot games, depending on the casino and its terms of service. With this kind of bonus, you just must register without depositing to claim it.

These bonuses are usually sticky but can be used to give you a taste of how the casino operates. It lets you try out some of the games and learn how to navigate around the casino’s site. When you use this free cash, you can test several games to find your favourite, before making a cash deposit.

This requirement is in place to ensure that you stick around after using your bonus. Typically, the wagering requirement involves placing bets to set values, such as 40x the bonus. The bonus may also be restricted for use on specific games, have a cap on bet size and have a time limit during which it must be used or forfeited.

200% Casino Bonus

A casino offering a 200% match deposit bonus would double your original deposit and add to it. So, for example, if you were to make a deposit of £10, you would be rewarded with a further £20 as a bonus, which means you would have a total of £30 to play with. A match deposit of this kind is quite commonly found, especially at newer casinos.

There is usually a cap to how much can be claimed, so the offer will usually be something like, 200% match deposit offer up to £100. You should be able to get more information from casino support regarding the wagering requirements

Sometimes a 200% casino bonus offer may also be accompanied by a free spins deal. The spins can usually only be used on specified slot games.

The number of free spins varies wildly from as little as 5 up to a more generous number like 200 spins, depending on the online casino. Sometimes, players will find that these bonuses are linked to a specific payment option. For example, Skrill and Neteller are two popular eWallets that can be used to make deposits. Players may find that a 200% match is available if depositing by Skrill, but not if using Bitcoin.

300% Casino Bonus

A 300% casino bonus is a one that matches your deposit by 300%. For instance, if you deposit £10, the casino will give you £30, so that in total you will have £40 to play with. A larger percentage bonus can be helpful for players who only want to risk a small amount of their own money at a new casino, for example.

With the help of this bonus, you can triple your wagering amount. Of course, there is a long list of terms and conditions that you must fulfil before you will be given the chance to withdraw any winnings made.

The main aim of such a generous bonus is to lure new customers to the casino site. As for other match deposit bonuses, there is likely to be an upper limit to the offer, so players might be offered something like a 300% match deposit bonus up to £300.

What this means is that if you deposit £100 you will receive the maximum £300 bonus, giving you a bankroll of £400 to start with. However, if you were to deposit £400 you would still only receive a bonus of £300, thanks to that bonus cap. It is always worth checking the T&C’s of any offer.

400% Casino Bonus

This bonus offer has the potential to quadruple your deposit. So, for a deposit of £10, if you have accepted a 400% match bonus offer you will have a bonus of £40 to play with, making a grand total of £50. As is usual for this large bonus offers additional terms and conditions are likely to be imposed.

Wagering requirements are often set on the high side and might prove difficult to fulfil. For example, a wagering requirement of 50x means that you will have to play through your £40 bonus plus £10 deposit 50 times before being able to withdraw any winnings.

In effect, this means that you will need to place wagers totally £50 x 50 which is £2500. Furthermore, these bonuses usually have a time limit imposed, which means that the wagering requirements must be met before the expiry date.

Otherwise, the bonus, and any winnings accrued up to that point, will be lost. The key thing that is encouraged at every instance is to get more information from the casino about the bonuses that are provided. Do not make rash decisions or follow steps without consent. Reading the terms and conditions takes just a few minutes and is well worth the effort.

500% Casino Bonus

A 500% casino bonus provides new players with even higher amounts to wager after their first-time deposit. For instance, if you deposit £10, you will be credited with an additional £50 in your account, giving you £60 in total to play with.

It is exceedingly rare to find a casino that offers a 500% bonus all in one go. More usually, a generous welcome offer such as this will be split across several deposits, most usually three. Each of these three deposits will earn a bonus of a smaller specified amount and the whole will add up to a final 500%.

Always make sure that you get more information about the bonus, how to claim it, and how to use it from the casino before getting started. Following the basic principles will help you avoid some mistakes that might prevent you from getting your winnings.

After the change of some regulations by the UK Gambling Commission, the terms of service offered by the casino should be clearly stated. Peruse through these terms to ensure that you understand everything. With a bonus, you may be required to use a promo code to activate this bonus, or it will be automatically credited to your account, depending on the casino.

Slots bonuses on Online Casinos

Slot bonuses can also be in the form of a bonus game. These bonus games are triggered if you hit a selection of symbols, usually scatters and wilds. This type of bonus is like a sticky bonus. The amount of money that you receive depends on the casino and game that you are playing. Some do offer cashback on each game while some accumulate the cashback.

Slot bonuses can also be in the form of free spins. Free spins are spins on a slot game that you won’t be paying for. These free spins can be awarded as a casino feature or an in-game feature after reaching certain levels.

Usually, in-game free spins are activated when you land certain scatters and wilds. Casino free spins are provided after deposits, and the bonus amounts accompany it. Some UK slot sites allow these spins to be used in every game, while others specify the game for the spins to be used. Free spins can be offered to new players. They are meant to entice the player to join.

Casino Bonus Facts

Casino welcome bonuses are good to start off visitors and new players to online casinos if they can differentiate between a good and a bad offer. Bonuses have noticeably short life spans. A player needs to commit to the right casino to enjoy these offers. To make the most of your bonuses, ensure that you follow the terms for using these bonuses.

Failure to do so might sometimes lead to issues when you want to withdraw your winnings. Some bonuses are lucrative, but their terms might be hard to fulfil. In some instances, huge bonuses are provided, but they’re credited to your account in smaller bits over time.

As seen above, bonuses can be of various formats and with different benefits. They are always available on different websites, and the player is tasked with choosing the best deal. Some bonuses might be a hoax, while others can provide you with a boost to your starting bankroll.

Match deposit bonuses are crucial when you deposit smaller amounts. Although wagering requirements can be high, you can win big if you are lucky. Casinos are incredibly careful to prevent the loss of money by providing bonuses that they can easily recover. That means a smart player can benefit immensely. Each player is advised to spend limited amounts to prevent high losses.


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If you feel like playing some casino always check here for the latest and hottest casino offers. We offer both no deposit and real money gambling promotions and bonuses.

Erik King Zamedia N.V.


Erik King – Author

The author of is Erik King. Erik has worked in the online casino business for many years taking on several different challenges within the iGaming sector. Thanks to all of this experience, Erik is providing the readers of Zlots with exclusive bonus deals and offers only available to our loyal visitors.