Poker in pubs is discouraged by the Gambling Commission and the Police in many areas have got busy in speaking to pub landlords. The problem is that no on ecan provie that the game is not being played for money. Side bets, settling up outside, no control over entrance money paid in advance are all problems.
The situation may change after 1st September with small stakes betting being proposed but the proposals are still out for consultation.
See www.gamblingcommission.gov.uk/Client/detail.asp?Contentid=97