UK Casino
You'll be wanting a reputable and secure UK online casino then... - while most online-based casinos offer various inducements to sign up with them, always look at the small print first - it sounds obvious but....
Make sure the UK casino you choose offers European banking options such as NETeller or Click2Pay and credit cards, switch, solo, and eco cards
All online casinos ask a lot of trust from their customers - sensitive data like names and addresses, credit card numbers... Every UK online casino should have a clearly-stated privacy policy - you should find a link on the front page, (it's often in the footer). Check this over, before you download a casino client, in particular that they explicitly state that they do not sell or otherwise transfer client information to 3rd parties.
SSL Encryption technology is also important - look for the padlock icon as soon as you're in the Member's area or actually playing...