Thanks for the info mate, I take it most decent body work places will do this then and for around the same sort of price? I want a proper job done. First two mods that I want to do have added up to £1000 already lol 
I got this done at a place in Maidenhead, Berkshire. They were more than happy to do the wet-priming. However, first of all I tried a recommended Porsche Approved bodyshop in Hertfordshire, however they said that the "smoothing" effect was unable to be achieved without purchasing new, already smoothed parts.
I guess it depends on the particular bodyshop you go to. I would recommend Parkford in Maidenhead. (don't worry, they don't specialse in Ford, their name is just coincidental. They are Windrush Volkswagen's recommended bodyshop.)
Chris.