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Slot Bonuses – What Makes the Reels Spin Longer

Online casino bonuses and promotions come in many shapes and sizes. However, most of them, like more than 90% of them, are targeting slot players in particular. Online slot bonuses are available in large volumes, but not all of them are worth your time and money. Below you can find a list of the best slot bonuses for UK players. You can also learn more about how slot bonuses work, so you too can identify a lucrative slot bonus deal at UK’s finest online casinos.

Best Slot Bonuses for UK Casino Players

Operator Bonus Link
LeoVegas Review LeoVegas Review Up to £400 in bonus money Play
888casino Review 888casino Review £1500 bonus
OR £88 No Deposit Bonus
+ 100% up to £100 1st Deposit Bonus
Casumo Casino Review Casumo Casino Review 100% bonus up to £300 + 20 free spins Play
Unibet Casino Review Unibet Casino Review 200% deposit bonus up to £200 + up to 200 free spins Play
Betfair Casino Betfair Casino Live Casino: Up to £400 OR
Casino: 500% up to £50 + 20 Free Spins
AND 25 Free Spins upon Registration
32Red Casino Review 32Red Casino Review £32 for every £10 deposit
- up to £160
Mr Green Casino Review Mr Green Casino Review Up to £100
+ 200 Bonus Spins

This list represents the online casinos that we believe are great across all areas, but also that focus on great slot bonuses. We've tested and reviewed them all to ensure you can make the best decisions when looking for new slots bonuses to you. So if you're looking for great casino games, great online slots, innovative casino products and some epic slots bonuses, you're in the right place.

Which Bonuses are Good for Slot Players?

In general, it’s not the nature of the bonus or the associated bonus terms. Instead, when it comes to slot bonuses, the important factor is the quality of the game on offer. Regardless of how good the bonus is, if there aren’t enough online slots available, or say, you can’t play your favourite online slot with the said bonus, is it really worth it?

This is why we recommend joining a casino which has earned our trust and the trust of the community, and one that also has some hot deals for slot players. Bet limits are not a problem, at least not in most cases.

Just pay attention to the secondary limit, which most players are not aware, that’s the maximum bet limit per line. It can be a problem if you’re into slots with a low number of paylines, which is usually the leading reason for higher than average wagers.

  • Quality Slot Collection Available
  • High Bonus Percentage
  • Full Contribution to Wagering Requirement
  • Bonus Packages: Bonus Money + Free Spins

These four points should give you a general idea of what the bonus must have, or which criteria it must meet in order to be considered attractive from a slot player perspective.

Low Wagering Requirement Slot Bonuses

Most players are concerned with the bonus amount and the bonus percentage only. When instead, the wagering requirement is what defines the bonus, and whether it’s of any good to you as a slot player.

As a rule of thumb, 20x to 30x the bonus amount wagering requirement is considered favourable. And, in this case, you should waste no time and claim the bonus deal. Slot bonuses with 30x to 40x the bonus amount wagering requirements are considered fair, and they still leave room for successfully completing the requirements, and making a profit.

Slot bonuses with wagering requirements beyond the 50x bonus amount threshold are considered unfavourable, and not recommended. Do not waste your time with them. Instead, just join different online casinos. Chances are, you will have to deal with high wagering requirements in the future again.

You’re lucky you’re part of the gaming industry when the competition is so big that casinos have to reduce the wagering requirements in order to stay marketable.

So, how many times should you play through the bonus and potentially the deposit amount is important, but even more important is the following.

Slot Games Contributing 100% to Wagering Requirements

The percentage of the game contribution to wagering requirements is a factor overlooked by many. And online casinos are using this situation, or even abusing this, to their own advantage. For example, wagering requirements of 30x appear attractive. However, if you take a closer look, and realise that most slot games contribute only 80% of the bet amount to the wagering requirements, it ends up being not so attractive after all.

Moreover, some casinos mandate different terms, which put slot players in a much worse position. For example, only slot games produced by a given casino game provider contribute to wagering requirements. It doesn’t necessarily need to be one, it can be 2 or 3, but the reality is still the same, not all slot games will get you to completed wagering requirements.

Pay attention! The devil is in the details, and the terms that can be detrimental are usually hidden in the small print. The UK Gambling Commission has made great efforts to make advertisements more transparent, but you can’t rely on that alone.

UK Slot Player Recommended Bonus Deals

So far we talked about slot bonuses in theory. Here are some slot bonuses that will definitely put a smile on your face! Some of them come with both bonus money and free spins, which is a big advantage for slots exclusive casino players.

Operator Bonus Link
Vera&John Casino Review Vera&John Casino Review 100% bonus up to £50 Play
Rizk Casino Review Rizk Casino Review 100% up to £100 Play
Casumo Casino Review Casumo Casino Review 100% bonus up to £300 + 20 free spins Play
888casino Review 888casino Review £1500 bonus
OR £88 No Deposit Bonus
+ 100% up to £100 1st Deposit Bonus
Dunder Casino Review Dunder Casino Review Up to £600 & 200 free spins Play
LeoVegas Review LeoVegas Review Up to £400 in bonus money Play

Slots Free Spins – A Distinct Type of Slot Bonuses

Since they are so popular, it was only a matter of time when a special type of bonus deals would hit the scene. Free Spins, or now known as Bonus Spins or Extra Spins, are a special type of casino bonus which targets slot players only. You can learn more about them in great detail in our very own Free Spins page.

What you should know is though, that free spins, like other slot bonuses, are also subject to wagering requirements and bonus terms, which are rarely favourable. Online casinos sometimes go too far with the limiting factors, adding cashout limits, high wagering requirements, or simply offering Free Spins which are available on slot games that are not even remotely familiar to the average slot player, let alone be called popular.

The selection process is basically the same. You check the bonus terms, you check whether the qualifying games are in line with your preferences, and then you snatch the deal. Note, even if it’s a no deposit bonus, or sign up spins, it’s enough to start your stay at the casino. In practice, this sets off your account, and your New Player status. Once you register, and claim an offer, you are basically on a countdown, and you can lose your welcome bonus eligibility.

Sign Up Bonuses for Slot Players

Sign up bonuses, have been around for decades, and they’re a fundamental part of online casinos, no wonder there are no casinos with sign up bonuses. But, what do we mean by sign up bonuses? Many players think that they’re simply bonuses that are available upon signing up. Well, to an extent that’s true, but then, this means all bonuses are sign up bonuses.

Over the years, players have started to identify no deposit bonuses with sign up bonuses. Frankly speaking, this makes more sense. As soon as you sign up, the bonus becomes available. Some casinos might ask for a bonus code, but even then, you provide the bonus code during registration, which means you still get the free spins or the no deposit bonus money as soon as you verify your email.

As a slot player, you get the most bonus action. You can benefit from bonus spins, free spins, bonus money, basically the full menu! However, as we said, sometimes it’s better to stop and think before you seal the deal with any online casino.

Online Slot Tournaments & Competitions

How would you like to make your gaming experience more exciting by taking part in a slot tournament? It’s way easier than you think it is, and they’re more popular than any of you might suspect. Most online casinos, like more than 80% of them, organise tournaments and other types of slots competitions on a regular basis.

The thing is, not all of them are worth it. Some tournaments favour players who play longer and bet more. Whilst others favour players who are more fortunate, and then there are the tournaments that put LUCKY players on top.

The underlying problem with all slot tournaments is that they incentivise players to PLAY MORE, which is not recommended, at least not by the UK Gambling Commission.

Rizk Casino Review

£100 BONUS

+ 50 Extra Spins over the course of 5 days
LeoVegas Review

£400 BONUS

18+. New UK players only. 20 Free Spins on sign up. Deposit Bonus: 100% up to £100 Bonus + 20 Bonus Spins, on each of your first 4 deposits. £10 min deposit (Skrill, Neteller excluded). £5 min. wager to activate Bonus Spins. All spins are valid on Book of Dead and expire after 7 days. 35x wagering on eligible games (£5 max stake) before Bonus, Free Spin or Bonus Spin winnings can be withdrawn. Eligibility restrictions apply. Please play responsibly. Full T&C’s apply.
Casumo Casino Review

£300 BONUS

+ 20 Free Spins on Registration

Slot Races – Popular Among Avid Online Slot Players

With prize pools of up to £50,000 they sure should be at the top of your priority list, but only if you’re not a new player. If that’s the case, it’s welcome bonuses then tournaments and other promotions.

Commonly referred to as slot races, these slot competitions last for a short period of time. They come with daily and weekly prizes. The tournament rules are almost always different, with one exception, you will need a hefty budget.

Operators that focus on gaming only are recommended. We’re not saying that you shouldn’t join a casino with a sportsbook, it’s the other way around, you don’t want to join a sportsbook with a casino. Like any other promotion, slot races are displayed on the promotions page, unless the operator is really into competitions, in which case there’s a dedicated page for tournaments.

Payment Method Limitations for Slots Bonuses

Before you head off into the world of slots, looking for the best bonuses, be aware that some payment methods may not let you qualify for a bonus. This may sound strange but online casinos often restrict bonuses to certain payment methods. Ultimately it's so they can better adhere to anti-money laundering regulations and steer clear of bonus abuse.

The two payment methods in particular that tend to get restricted are Skrill and Neteller. Ironically, for standard depositing and withdrawing, these methods are two of the most popular. If you want to use these methods and take advantage of great slot bonuses, we suggest making your bonus deposits with another method such as debit or credit cards.

Keep an eye on the terms and conditions as the online casino must list the payment methods it doesn't accept for bonuses.