Not sure you would want it covering an entire room, but for a feature area, the Carnival wallpaper at Graham and Brown should work a treat.
Carnival is a bold paper by Hemingway Design, inspired by the mid-20th century and perfect for adding a bright, retro touch to pretty much any room. It's a mix of black, white an orange, with a 'lozenge block' design throughout. A straight match too, so should be able to consistently cover any space you have.
Each roll is 52cm wide and 10m long, selling for £26 for a single roll.