Yep, I agree with some of the other comments. I would suggest PLO rather than pot limit holdem. On William Hills
where I play it is almost impossible to get a pot limit holdem game running. I believe there are still many players who play live plh in Northern England, but as far as online play goes you may struggle to find a game.
Limit Holdem is a fun game to play, but brush up on the maths skills and if you are playing short handed be prepared to have you head explode. Open up a table on stars and watch for a while. Almost all hands are played to the showdown.