For all those in london look for Forbidden Planet store, highly recommended by far asmy favourite comic shop. Stacked with comics ,action figures, manga,anime,dvd's, books,comics,graphic novels,toycapsules,japanese toys, imports. If you decide to visit be sure to also visit the 4 other comics stores within a walking distance from the shop.
More info on address:
http://www.forbiddenplanet.com/WhereWeAre.shtml