Vehicle wrappers are where you want to be looking

3M Di-Noc is the gold standard wrapping material, hard to get smaller Qs of though:

http://solutions.3m.co.uk/wps/portal...I-NOCSelector/

Other brands by the meter:

http://www.mdpsupplies.co.uk/vehiclewrapping.asp

Used the cheap taxi wrap in white for a few ply things, works an absolute treat , vinyl finish in one hit, not 25 coats of paint.

Wrapping film ain`t your Dad`s Fablon, air release liners and flexible so wont rip at first curve, hot air gun is handy.