Seems it's not too hard for UK-based companies to just set up shop in another EU country and ship all their stuff from there, as Lee mentioned.
The EU being so open a community that facilitates businesses operating from country to country so well.
A company like Eurocreme, for example. Their DreamBoy line is what put them on the map - a UK video line with UK models and UK production, most movies shot almost entirely in the UK and promoted and branded as a UK creation... operating out of The Netherlands when it comes to video sales and distribution.