Looking to boost your bankroll? A £300 welcome bonus is the perfect way to do so! These sizeable offers mean plenty of extra playtime on your favourite games, which is why we’ve scoured the internet for the best casinos offering £300 welcome bonuses to new players. Whether you’re looking to play slots, blackjack or roulette, you’re sure to find a bonus that suits your preferences and playing style. Want to compare the best options available online today? Take a look at our list of the UK’s top-rated casinos, pick out a favourite and sign up to claim up to £300 in bonus funds today!
£300 Casino Welcome Bonuses
Updated July 2020
How to claim your £300 welcome bonus
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Compare
Use our list of the best UK casinos offering £300 as a welcome bonus to find the right deal for you. While the offers may seem similar at first glance, you’ll need to consider the small print to find the best online casino for you. Factors such as wagering requirements, minimum deposits and maximum win limits might affect your choice. You’ll find a more detailed breakdown of each casino in our expert casino reviews.
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Sign up
Once you’ve chosen an online casino, you’ll need to create an account. Following the link on our list will take you straight to the bonus registration page where you can fill in your personal information and enter any necessary bonus codes. You may have to verify your account by providing identity documents before you can claim your bonus and start playing..
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Deposit
You’ll need to make an initial deposit to claim your online casino £300 welcome bonus, so head to the cashier and pick out your preferred payment method. In most instances, your bonus funds will be credited to your account almost immediately, so you’ll be able to play your favourite games right away!
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Play
Now that your bonus funds are available the fun can begin. Simply head to the games library, choose a title that appeals to you and get playing. If you’re new to online casino games, bonus cash funds can be a great way of experimenting with different games and getting to grips with how each title works.
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1Deposit £10 Get £60 + 100 Spins
T&Cs ApplyNew Customer Offer
UK &; IRL only. Deposits made with e-wallets are not valid for this promo. Bonus wagering x35 on eligible games. Winnings from bonus capped at £500. Spins available after bonus is redeemed/lost. 10 per day with no wagering. Full T&Cs apply
pay £10, play with £60.
18+ Please Gamble Responsibly. Click 'Claim Bonus' to view full terms and conditions
Deposit £10 Get £60 + 100 Spins
T&Cs ApplyNew Customer Offer
UK &; IRL only. Deposits made with e-wallets are not valid for this promo. Bonus wagering x35 on eligible games. Winnings from bonus capped at £500. Spins available after bonus is redeemed/lost. 10 per day with no wagering. Full T&Cs apply
pay £10, play with £60.
18+ Please Gamble Responsibly. Click 'Claim Bonus' to view full terms and conditions
Award Winning Casino
- Full PayPal Support
- Popular Live Casino
- Superb Mobile App
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2200% Up To
£300
Welcome Bonus
T&Cs ApplyNew Customer Offer
£20 min deposit, excluding deposits by Skrill or NETELLER • 200% up to £300 Bonus • Bonus wins are capped at £500 • To withdraw bonus & related wins, wager 30 x (bonus amount) within 90 days.
Pay £100, play with £200
18+ Please Gamble Responsibly. Click 'Claim Bonus' to view full terms and conditions
200% Up To
£300
Welcome Bonus
T&Cs ApplyNew Customer Offer
£20 min deposit, excluding deposits by Skrill or NETELLER • 200% up to £300 Bonus • Bonus wins are capped at £500 • To withdraw bonus & related wins, wager 30 x (bonus amount) within 90 days.
Pay £100, play with £200
18+ Please Gamble Responsibly. Click 'Claim Bonus' to view full terms and conditions
Highly Trusted
- Full PayPal Support
- Exclusive Bonuses
- 7-Figure Jackpots
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3100% Up To
£300
Welcome Package
T&Cs ApplyNew Customer Offer
Min deposit £10. 50x wager “BONUS + DEPOSIT” amount before withdrawal. Bonus must be accepted within 72 hours, valid for 30 days & wagering must be completed within this time. Bonus amount can't be withdrawn. Not all games contribute equally to wagering requirements. Max bet restrictions apply. Deposits with Skrill & Neteller are not valid for this promotion.
pay £100, play with £200
18+ Please Gamble Responsibly. Click 'Claim Bonus' to view full terms and conditions
100% Up To
£300
Welcome Package
T&Cs ApplyNew Customer Offer
Min deposit £10. 50x wager “BONUS + DEPOSIT” amount before withdrawal. Bonus must be accepted within 72 hours, valid for 30 days & wagering must be completed within this time. Bonus amount can't be withdrawn. Not all games contribute equally to wagering requirements. Max bet restrictions apply. Deposits with Skrill & Neteller are not valid for this promotion.
pay £100, play with £200
18+ Please Gamble Responsibly. Click 'Claim Bonus' to view full terms and conditions
Modern Design & Graphics
- Big UK Brand Name
- Great Live Casino Offering
- Huge Jackpot Slots
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4Enjoy Up To
£200
+ 100 Spins
T&Cs ApplyNew players only. 18+. Min deposit £10. Wagering requirement apply 35x. Offer valid for 72hr. 100 spins includes 3 deposit.
18+ Please Gamble Responsibly. Click 'Claim Bonus' to view full terms and conditions
Enjoy Up To
£200
+ 100 Spins
T&Cs ApplyNew players only. 18+. Min deposit £10. Wagering requirement apply 35x. Offer valid for 72hr. 100 spins includes 3 deposit.
18+ Please Gamble Responsibly. Click 'Claim Bonus' to view full terms and conditions
Brand New Casino
- Perfect for VIP Players
- Excellent Live Casino
- Great Game Selection
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5100% up to £300 + 200 Spins
T&Cs ApplyNew Customer Offer
£10 min deposit. £5 max bet using bonus. 40x wagering applies. Bonus valid for 14 days. 20 Spins on preselected games will be credited instantly + then 20 per day for 9 days. Free Spins valid for 72 hours from credit. Max Free Spins winnings £100. Skrill + Neteller excluded. Always refer to Bonus Terms - www.begambleaware.org
Click here for full T&CsDeposit £100 play with £200
18+ Please Gamble Responsibly. Click 'Claim Bonus' to view full terms and conditions
100% up to £300 + 200 Spins
T&Cs ApplyNew Customer Offer
£10 min deposit. £5 max bet using bonus. 40x wagering applies. Bonus valid for 14 days. 20 Spins on preselected games will be credited instantly + then 20 per day for 9 days. Free Spins valid for 72 hours from credit. Max Free Spins winnings £100. Skrill + Neteller excluded. Always refer to Bonus Terms - www.begambleaware.org
Click here for full T&CsDeposit £100 play with £200
18+ Please Gamble Responsibly. Click 'Claim Bonus' to view full terms and conditions
Brand New Casino
- Brand New Casino
- Modern Design
- Great for New Games
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6100% Up To
£100
+10% Cashback
T&Cs ApplyNew Customer Offer
Maximum bonus is 100% up to £100. No max cash out. Wagering is 35x bonus. Maximum bet while playing with a bonus is £5. Cashback is cash with no restrictions. Bonus excluded for players that deposit with Skrill or Neteller. Click here for full T&Cs
pay £100, play with £200
18+ Please Gamble Responsibly. Click 'Claim Bonus' to view full terms and conditions
Click here for full terms and conditions100% Up To
£100
+10% Cashback
T&Cs ApplyNew Customer Offer
Maximum bonus is 100% up to £100. No max cash out. Wagering is 35x bonus. Maximum bet while playing with a bonus is £5. Cashback is cash with no restrictions. Bonus excluded for players that deposit with Skrill or Neteller. Click here for full T&Cs
pay £100, play with £200
18+ Please Gamble Responsibly. Click 'Claim Bonus' to view full terms and conditions
Top Games Selection
- Excellent Live Casino
- Perfect For VIP Players
- Live Chat Support
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7100% Up To
£100
Welcome Bonus
T&Cs ApplyNew Customer Offer
100% welcome bonus worth up to £100 is only valid for new players who have registered but have not made any deposit. The value of the bonus has a play through of 35 which must be met to validate any winnings deriving from it. The offer is valid for all payment methods available in Novibet, apart from Neteller and Skrill.
pay £100, play with £200
18+ Please Gamble Responsibly. Click 'Claim Bonus' to view full terms and conditions
100% Up To
£100
Welcome Bonus
T&Cs ApplyNew Customer Offer
100% welcome bonus worth up to £100 is only valid for new players who have registered but have not made any deposit. The value of the bonus has a play through of 35 which must be met to validate any winnings deriving from it. The offer is valid for all payment methods available in Novibet, apart from Neteller and Skrill.
pay £100, play with £200
18+ Please Gamble Responsibly. Click 'Claim Bonus' to view full terms and conditions
Editor's Choice
- Perfect For VIP Players
- Full PayPal Support
- Over 1,000 Games
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8£20 Welcome Bonus
T&Cs ApplyNew Customer Offer
The £20 Welcome Bonus is for open to all new customers to Grosvenor Casinos that make an eligible first deposit.
The minimum eligible deposit is £20.
Only one bonus per player, household and IP address is permitted.
The bonus should be awarded instantly but no later than 72 hours after a successful deposit of £20 or more.
To withdraw a bonus and associated winnings, players must wager a total of five (5) times the bonus amount, e.g. £20 x = £100
Attempting to withdraw prior to meeting the wagering requirements will result in the bonus balance being forfeited.
Customers have 30 days to meet the wagering requirements from the date of first deposit.
The bonus is only available to players that have registered from one of our permitted and licensed jurisdictions.
In any dispute, the Grosvenor Casinos management decision will be final.
Employees of Rank Group or anyone associated with the offer are not permitted to participate.
Grosvenor Casinos reserves the right to withdraw or amend this offer at any time without prior notice.
This bonus cannot be used in conjunction with any other offer.
We may at any point before, during or after the promotion, ask for valid proofs of identity, such as a passport to verify your identity, age and residency. If you are unable to produce such documents you will automatically be excluded from the promotion and will forfeit any prizes that have already been allocated or awarded to you, without compensation.
Any abuse of this offer may lead to all bonus funds being withdrawn.
Customers, whose accounts have been closed, suspended or are found to have multiple accounts when a promotion has ended will have their entry forfeited.
We do not guarantee continuous uninterrupted access to the website. Numerous factors outside the control of the promoter may interfere with the operation of the Website. No responsibility will be accepted for any difficulties, participation or claims that are corrupted or not delivered.
General Terms and Conditions apply.Deposit £20 and get £20 welcome bonus
18+ Please Gamble Responsibly. Click 'Claim Bonus' to view full terms and conditions
£20 Welcome Bonus
T&Cs ApplyNew Customer Offer
The £20 Welcome Bonus is for open to all new customers to Grosvenor Casinos that make an eligible first deposit.
The minimum eligible deposit is £20.
Only one bonus per player, household and IP address is permitted.
The bonus should be awarded instantly but no later than 72 hours after a successful deposit of £20 or more.
To withdraw a bonus and associated winnings, players must wager a total of five (5) times the bonus amount, e.g. £20 x = £100
Attempting to withdraw prior to meeting the wagering requirements will result in the bonus balance being forfeited.
Customers have 30 days to meet the wagering requirements from the date of first deposit.
The bonus is only available to players that have registered from one of our permitted and licensed jurisdictions.
In any dispute, the Grosvenor Casinos management decision will be final.
Employees of Rank Group or anyone associated with the offer are not permitted to participate.
Grosvenor Casinos reserves the right to withdraw or amend this offer at any time without prior notice.
This bonus cannot be used in conjunction with any other offer.
We may at any point before, during or after the promotion, ask for valid proofs of identity, such as a passport to verify your identity, age and residency. If you are unable to produce such documents you will automatically be excluded from the promotion and will forfeit any prizes that have already been allocated or awarded to you, without compensation.
Any abuse of this offer may lead to all bonus funds being withdrawn.
Customers, whose accounts have been closed, suspended or are found to have multiple accounts when a promotion has ended will have their entry forfeited.
We do not guarantee continuous uninterrupted access to the website. Numerous factors outside the control of the promoter may interfere with the operation of the Website. No responsibility will be accepted for any difficulties, participation or claims that are corrupted or not delivered.
General Terms and Conditions apply.Deposit £20 and get £20 welcome bonus
18+ Please Gamble Responsibly. Click 'Claim Bonus' to view full terms and conditions
Highly Trusted
- Big UK Brand Name
- New & Classic Games
- Great Table Game Offering
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980 Wager Free Spins on 1st Deposit
T&Cs ApplyNew Customer Offer
50 Free Spins on first deposit (on Rich Wilde and the Book of Dead). Also, after the first deposit the player can claim an additional 30 Free Spins by visiting the Kicker Section. So the player can receive a total of up to 80 free spins. Please refer to the landing page for all the details.
Deposit £10 and get 50 Free Spins + 30 Extra Free spins to claim!
18+ Please Gamble Responsibly. Click 'Claim Bonus' to view full terms and conditions
Click here for full terms and conditions80 Wager Free Spins on 1st Deposit
T&Cs ApplyNew Customer Offer
50 Free Spins on first deposit (on Rich Wilde and the Book of Dead). Also, after the first deposit the player can claim an additional 30 Free Spins by visiting the Kicker Section. So the player can receive a total of up to 80 free spins. Please refer to the landing page for all the details.
Deposit £10 and get 50 Free Spins + 30 Extra Free spins to claim!
18+ Please Gamble Responsibly. Click 'Claim Bonus' to view full terms and conditions
Great on Mobile
- Super Fast Payouts
- No Wagering Required
- Money Back On Every Bet
-
10100% Up To
£100
+ 25 Spins
T&Cs ApplyNew Customer Offer
Min. deposit £15 (no Skrill/Neteller); 40x wagering within 15 days to convert to real money; Max winnings = 10x bonus amount; Real money balance wagered first; Free spins valid for 7 days; Free spins max. winnings = £100. Stake contribution towards wagering requirements varies between eligible games.
pay £100, play with £200
18+ Please Gamble Responsibly. Click 'Claim Bonus' to view full terms and conditions
100% Up To
£100
+ 25 Spins
T&Cs ApplyNew Customer Offer
Min. deposit £15 (no Skrill/Neteller); 40x wagering within 15 days to convert to real money; Max winnings = 10x bonus amount; Real money balance wagered first; Free spins valid for 7 days; Free spins max. winnings = £100. Stake contribution towards wagering requirements varies between eligible games.
pay £100, play with £200
18+ Please Gamble Responsibly. Click 'Claim Bonus' to view full terms and conditions
Modern Design & Graphics
- Excellent Live Casino
- Big Range of Offers
- Slots + Lots More
Our approach to online casino reviews
At TopRatedCasinos.co.uk we take a lot of pride in presenting our users with the best online casinos the UK has to offer. We’re continually reviewing the market to bring you the lowdown on newly launched casinos, as well as updates on long standing brands. Our expert review team research every casino we present to you, making sure you’re in-the- know and join a casino that meets all your needs. The key areas focused on by the TopRatedCasinos.co.uk review team are:
Bonus offers
We assess the size, quality and wagering requirements of any welcome bonuses, free spins, offers and VIP programmes.
Games
Game selection is very important – we look for table games, live gaming, and a range of slots from top software providers
Design
We think online casinos should have a distinct brand and design, with modern, easy to use interfaces and navigation.
Device support
We look for the highest quality betting experience across a range of mobiles and tablets, as well as desktop computers.
Cashier
We review the available deposit and withdrawal methods, times, restrictions, currencies and more.
Reputation
We study each bookie’s popularity, trustworthiness and customer feedback to determine the strength of their reputation.
TopRatedCasinos.co.uk is an independently owned casino comparison site. In some cases we receive commission from casinos for introducing customers to them, in order to support the free comparison service we provide to UK gamers. While this may occasionally affect the position in which a casino appears, we guarantee it does not affect either the review or the ratings shown, which are produced by our unbiased casino experts. hi
Frequently Asked Questions
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Do I have to be a new player to claim a £300 bonus?
Yes. While there’s plenty of opportunities for existing customers to claim reload bonuses and VIP rewards, these will usually offer smaller amounts. £300 matched deposit offers are almost always exclusive to new players making their first deposit.
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Can I claim more than £300 as a first deposit bonus?
Sure – some of the best online casinos offer players the chance to claim £500 in bonus funds, and you can even bag up to £1,000 in welcome bonus funds at some sites. Of course, usually the more you want to claim the more you’ll have to deposit, so it’s all about finding the bonus that best matches your budget and playing preferences.
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Do all £300 bonuses have wagering requirements?
Yes. While some casinos offer low wagering and no wagering bonuses, these are usually for smaller bonus amounts. This is because any winnings from no wagering bonuses can be withdrawn right away, so a casino would risk making a big loss from a £300 no wagering bonus.
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Can I claim free spins with my £300 bonus?
Yes. Many top £300 welcome bonus casinos offer free spins as part of the welcome package, affording you bonus play time on slot games too. Just keep in mind that the free bonus spins are often subject to different terms to the £300 bonus and may be exclusive to a specific title.
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Is the bonus amount subtracted from the winnings?
Generally, you’ll be able to keep the £300 casino welcome bonus as well as the winnings if you manage to complete the wagering requirements. We’d always advise double checking the terms and conditions just to be sure, though.
Contributors
Danielle is a staff writer at TopRatedCasinos.co.uk. She contributes to all things casino, from our ‘how to play’ guides to tips on finding the best sites for your favourite casino games. Danielle also has experience writing about sports betting, covering a diverse range of sports including rugby and Formula One.
As staff writer, Daniel offers his expertise in all things gambling, contributing to a number of topics on TopRatedCasinos.co.uk, including our casino reviews and strategy guides. Daniel is also an avid sports fan, with a strong interest in NBA and Premier League betting.
Alan is a staff writer at TopRatedCasinos.co.uk. He covers all areas of the online casino industry, from the newest slot releases to the latest live dealer technology. Alan is also a fan of sports betting, and spends most of his spare time watching and reading about football.