Finding the best casino welcome bonus is a really valuable use of your time as a gambler. Why? Because it can get you some free spins and some free money. 

The reason for this is that welcome bonuses are rewards that online casinos give to new gamblers. 

Casinos offer these incentives because it tells gamblers that they can place wagers without spending their own money. The thing is, though, that welcome bonuses aren’t quite free and it can be difficult establishing which casino offers are the best ones. 

That’s where we come in. 

Please be aware that all bonuses and promotions mentioned in this article come with the following conditions in order to meet UK casino compliance laws:

• 18+ 

• T&Cs apply  

Best casino welcome bonuses of UK gambling sites 

Top 5 sites with the best casino signup bonus

1. Grand Ivy Casino: king of casino welcome bonuses

2. Betway: very low wagering requirement 

3. 888: great welcome bonus all-rounder 

4. LeoVegas: great bonuses & enormous games library

How we’ve reviewed the best casino welcome bonuses for you

At OnlineCasinos.co.uk, we review the top gambling sites, looking at all the features that are important to gamblers like yourself. 

We’ve reviewed the sites with the best casino welcome bonuses and have focussed on these key things: 

• Best cash bonus 

• Best free spins offer 

• Best reward for wagering requirements 

Our guide includes a list of the top sites for all these details. All you need to do is decide which bonuses are most important for you and then find the site that offers the best package. 

Gold medalist 🥇 Grand Ivy Casino – king of casino welcome bonuses 👑

Credit: Grand Ivy Casino  

Total welcome bonus package ⭐⭐⭐⭐⭐

No casino we reviewed matched the cash welcome offer you get from Grand Ivy Casino In addition to this you also get some free bonus spins, making it the clear winner of the casino with the best welcome bonus.

Payout speed ⭐⭐⭐: 1-7 days 

Grand Ivy Casino is the best casino that we reviewed for the welcome bonus package it offers. However, that’s not the only great thing about this site: 

Top three features of Grand Ivy Casino  

• Excellent live casino games 🏠

• Fantastic software providers 💻

• Great range of casino games 🎲

We’re huge fans of Grand Ivy Casino and we’re certain you will be too. Head over to the site now to create an account and get access to your welcome bonus. 

Silver medalist 🥈 Betway – very low wagering requirement 💷

Credit: Betway

Total welcome bonus package ⭐⭐⭐⭐⭐ 

Betway has a competitive cash welcome bonus0, along with some free spins. This would be enough to make it our silver medalist, but what really seals the deal is its wagering requirement – at 10%, it’s the lowest of all the casinos we reviewed.

Payout speed ⭐⭐⭐⭐⭐: 1 - 2 days. 

Betway is one of our favourite casinos, but it’s not only because it has an exceptional welcome bonus package – it offers something for pretty much every gambler: 

Top three features of Betway

• Great sports package ⚽

• Superb app for mobile gambling 📱

• Outstanding table games 🃏

We’re huge fans of Betway and we know that you’ll love gambling at this top online casino. Check out all the reasons we like this site by reading our Casino Betway review. 

Bronze medalist 🥉 888 –: great welcome bonus all-rounder 🥊

Credit: 888

Total welcome bonus package ⭐⭐⭐⭐

888 doesn’t win any of the key welcome bonus categories – cash offer, free spins, or wagering requirement. But where it excels is in being a great all-rounder, offering exceptional value in every area of its introductory rewards. 

Payout speed ⭐⭐⭐⭐⭐: 1 - 2 days 

888 isn’t only a great casino because it offers some of the best welcome bonuses – it also provides all of the other things that you demand from the leading gambling sites, including: 

Top three features of 888

• No deposit bonus 💷

• Competitive games payouts 💰

• Brilliant selection of poker games 🂡

We love wagering our money at 888 and we know that you will too. Read our detailed Casino 888 review to learn all the other great things about this exceptional gambling site – our head over to 888 Casino yourself to test it out. 

LeoVegas: great bonuses & enormous games library 🎲

Credit: LeoVegas

Total welcome bonus package ⭐⭐⭐⭐

LeoVegas offers a very competitive cash reward and a reasonable amount of free spins for its welcome bonus – making it good, but not exceptional. What sets LeoVegas apart is the combination of a good bonus offer and an exceptional games library, with 1,000 titles for you to choose from.

Payout speed ⭐⭐⭐: 1 - 5 days. 

LeoVegas is one of the UK’s best casinos for its welcome bonus package, but rewards aren’t the only reason that we rank it so highly: 

Top three features of LeoVegas 

• Great selection of baccarat games 🃏

• Fantastic for mobile gambling 📱

• Enormous range of slots titles 🎰

We’re massive fans of LeoVegas and have no doubts that you will be too. Have a look at our Casino LeoVegas review to learn all of the reasons that we think this is a great site for gamblers – or visit LeoVegas Casino for yourself today. 

bgo: excellent free spins welcome offer 🎰

Credit: bgo

Total welcome bonus package ⭐⭐⭐⭐⭐

With plenty of free spins on offer, bgo is the casino with the best welcome bonus for slots fans, however,  there’s a catch. The free spins you get from bgo have to be won, meaning that its offer is more of a gamble than those you get from other sites.

Payout speed ⭐⭐⭐⭐: 3 days. 

The free spins offer you get for signing up to bgo makes it one of the best casinos out there. But it’s not only the introductory bonus rewards that make bgo such a great site:

Top three features of bgo  

• One of the most secure online casinos 🏦

• Great ad hoc promo code rewards 🤑

• Exceptional selection of casino games 🎲

We adore heading over to bgo to play our favourite casino games and we know that you’re going to feel the same. Read our casino bgo review to learn the many great reasons this is such a top gambling site – or visit bgo Casino for yourself now. 

Best sites for cash casino welcome bonus 

Why the cash offer matters when reviewing the best casino welcome bonuses 

Getting a cash reward just for signing up to a casino and depositing a bit of your own cash is probably the welcome bonus gamblers care about most – after all, it’s free money (well, sort of). 

You must read the full terms and conditions of all cash bonuses and keep an eye out for these things. 

• How much of your own money you need to deposit 

• How many different deposits you need to make 

• How much time you have to make the cash deposits 

Best site for cash welcome bonus: Grand Ivy Casino

Credit: Grand Ivy Casino 

• Grand Ivy Casino has an impressive cash welcome bonus

Best sites for free spins casino welcome bonus 

Why the free spins matter when reviewing the best casino welcome bonuses 

Free spins are a great welcome bonus – they allow you to play some of the best slot games for free and all you have to do is deposit a little of your own money. 

What you need to know is that these free spins do come with some conditions, such as: 

• Only being available for certain games 

• Only on offer for a set number of days 

• Only being dished out in daily doses

Best site for free spins welcome bonus: Genesis

Credit: Genesis 

• Genesis offers free spins as part of its welcome bonus

Best casinos for welcome bonus wagering requirement

Why wagering requirements matter when reviewing the best casino welcome bonuses 

The wagering requirement is the amount of the cash or spin bonus that you need to deposit before you can make a cash withdrawal. 

This is super important because it tells you how much of your own money you need to spend before you can get your ‘free’ cash or spins. 

Using the example of a £100 cash bonus, this is how wagering requirements work:  

• 30x = £100 x 30 – you need to deposit £3,000 of your own money to get the bonus

• 40x = £100 x 40 – you need to deposit £4,000 of your own money to get the bonus

• 50x = £100 x 50 – you need to deposit £5,000 of your own money to get the bonus

Best site for welcome bonus wagering requirements: 

Credit: PlayOJO 

PlayOJO has no wagering requirements for you to get its free spins welcome bonus

How to get the best casino bonus

Almost every online casino offers a welcome bonus – it's in their interest to do so because it’s a way of drawing in new gamblers. 

But because so many sites offer these rewards (often at similar amounts) it can be difficult getting the best bonus. 

There are three steps you should take to help get the best bonus: 

1. Decide what bonus you want – free cash, free spins, or a combination 

2. Read reviews of the top gambling sites and find the ones with the best offers 

3. Go through the wagering requirements needed to get these bonuses