Blair fans? Well, security should have no trouble handling 3 to 5 individuals from within the whole of UK...
I wonder what would happen if one of those "fans" was trying to execute the arrest by citizen that Psyche was so keen on... No violence, as per advice, just "You're under arrest, follow me to the nearest police station. No? I am calling the police, then... Allo, I am in the Picadilly's Waterstone and I have Mr. Blair refusing to cooperate and follow me to the station. Can you come and arrest him?"
I wonder...