Hi Zele
The Grosvenor Victoria casino is the main London cardroom. There is also another cardroom called Gutshot in the city.
There are casinos with cardrooms in both Glasgow and Edinburgh. You can find details, including addresses and contact numbers
here.
A couple of points to be aware of:
1) You have to apply for membership of a UK casino 24 hours before you are allowed to play. You therefore need to ensure you've faxed an application to them ahead of your visit. You will then be asked for some form of ID on your first visit to the casino. (NB: This doesn't apply at Gutshot - you can turn up there with your ID and play straight away).
2) Don't expect to find any limit games available. All cash games are Pot Limit in the UK.
3) There are relatively few games with dealers available. Be prepared for a self-dealt game/tournament.
Sheriff