Clubs in Fulham have started trying to get people to hand over photo ID before they can enter. I never do since I don't see the point and have no photo ID other than my passports, which I'd prefer to leave at home.
Governments have tried to force ID cards on people, and often claim that they'd be useful by combining lots of functions onto one card (others see this as a drawback). A very useful function which could be combined onto such a card would be a Data Protection Act subject access request.
Print a DPA subject access request onto a business card, stick it to the back of your ID card, then hand it over to the bouncer with a ten pound note, smile, and say "You have forty days to comply". De-risking this tactic should prove an entertaining challenge for the nightclubs which cravenly given in to whoever is encouraging them to ID people.