Does anyone know of a print shop in the UK where I can have proper paper posters made from my photos? Note I'm talking specifically about posters made from paper (exactly like the ones you'd buy rolled up at HMV) and not poster-sized prints on photographic paper. Plenty of outlets claim to sell "posters" but they always seem to be the latter.
Update: I'm offering a bounty on this question to see if we can find any other good suppliers. Results from Staples were OK but not great. Can anyone suggest a better poster printer in the UK?