Range from the cheapest Wallpapering £270 (Building and Plastering Solution based in SE5) to the dearest Wallpapering £450 (Buci builders based in Se27).
Comparing painter & decorators estimates for Wallpapering gives you an idea of who will be better value but the best way to compare costs is to get actual quotes.
What to do - Get rates and quotes for wallpapering your rooms by posting your job to painter & decorators in SE22.