Peter - try this site:
http://www.3mventureshield.co.uk/find-installer/I used to have a client who ran a business that wrapped vehicles for a living - still in touch with him - he is very good at removing film and refitting. No good to you though as he is near Leicester but if you can find someone similar.
Stand over the chap though - my chum will never cut a film on a vehicle - not something that can be said of all of them.