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OnlineCasinoKing: the home of the bigger online casino bonus! We negotiate Exclusive Casino Bonuses for our players so you get a better deal. Plus bonus & promo news, tips, free casino games and breaking stories on our blog. Check below for more than £2000 worth of bonuses from the best UK online casinos.

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Best Casino Sites

royal-vegas

Royal Vegas

$/€/£ 1200 multi-bonus. 1st: 100% match: $/€/£150. 350+ games. Plus 20 FREE Spins on Thunderstruck II (exclusive)
hippodrome casino

Hippodrome

One of the UK's most iconic casinos is now online with a £/$/€ 1000 bonus
ladbrokes

Ladbrokes Casino

Ladbrokes relaunched with Playtech games in 2014- they have a big choice. There's a £500 match bonus available (100%).
mansion casino

Mansion Casino

Mansion remains one of our favourite Playtechs. A big bonus and a big range of games with a $/£/€500 bonus.

Free Games

Casino Games

Exclusive Promotions

paddypower casino

Paddy Power Exclusive

Claim £/€ 5 Free & a £/€ 300 Exclusive Bonus. (The standard offer is £/€ 200) Play now
crazyvegas casino

Best Free Hour Bonus

At Crazy Vegas you can choose between a £/$/€ 3000 & 1 hr free bonus or a £/$/€ 500 multimatch. Play now
platinum play

1500 Free Bets

Platinum Play offers new players 1500 free bets to test their games. Keep the winnings after your first deposit. Play now
777 dragon

£/$/€ 777 Free Hour

Claim a £/$/€ 777 and 1 hr free bonus. Beat the house and the winnings are yours. Play now

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Online Casino King

OnlineCasinoKing: the home of the bigger online casino bonus! We negotiate Exclusive Casino Bonuses for our players so you get a better deal. Plus bonus & promo news, tips, free casino games and breaking stories on our blog. Check for more than £/€/$ 2000 worth of bonuses from the best online casinos.

We’re passionate about what we do: reviewing and testing out online casinos, and we are here to try and act as your guide though what can be a maze.

Browse around the site, play some free games, check out the bonuses and please play responsibly!