Read on to find out why we’ve chosen each one below. So based on the tests and ratings from our UK online casino reviews, we’ve selected the top 20 online casinos UK to help you find the perfect site. These have the basics in place – such as plenty of slots & games from good providers, strong security, support for desktop and mobile devices etc.īut the top sites offer more. New platforms with a UK Gambling Commission licence are popping up all the time.