I came across something new the other day, I had a domestic LHR-MAN. Trying to get some peace and quiet going through security one of the BAA goons tried to divert me to the Fastrack lane saying I had a business class ticket because the class shown was C.

Of course I knew that was wrong, and it'd say Business UK or be J class on the ticket. Though I wonder how many people get told they have business tickets then think they can get into the lounge.