I don't know London particularly for bookshops, the place is crwaling
with them. But you might try and drop by the British Film Institute,
Stephen Street 21 because they publish stuff and have a bookshop.
 
Charlie Clark
University of Glasgow
Department of Film and Television
Wilton St 212, 3/1
Glasgow
GB-G20 6BL
tel +44.(0)41.946.18.16