Not sure if this deal will be in all Fopp stores but at the Union Street store in Glasgow they had a massive sale on t-shirts
There were at least 15 boxes full of shirts at huge discount. Most were either £2 or £3 with the odd £5 shirt in there. There was no order however so it might take a bit of time to find the right shirt and in the right size
There were shirts for - Metallica, Red Hot Chili Peppers, Killers, Nirvana, ACDC, Guns n' Roses, Foo Fighters, Simpsons, Batman - Joker (2 designs) and a few others I think.
I picked up a Red Hot Chili Peppers shirt for £2 and also the Joker shirt pictured for £3 (which is £11.99 at Play right now)