Ring the ADAC in Germany and ask to be connected tot he lady who speaks English. Loads and loads of people are joining from the UK. Costs about 100 euros but gives full EU and North African cover for the year for any vehicle you or your family own or any vehicle you or your spouse may be travelling in. Very popular with the Campervan crowd who spend a lot of time abroad as they have no limit on age and size of vehicle. I am with the Auto Club Europa, also a German company and astually cheaper than ADAC but I don’t know how good their English customer service would be. When I moved back here from Germany and popped in to the office and was reassured that living in the UK was not a problem for their service as they use local partners throughout Europe. Their nice monthly magazine drops through my door and always makes interesting reading.
The ADAC even have an english website now. They recovered a friend of mine and his family and trailer from the pyrennes no problem
http://www.adac.de/mitgliedschaft/adac_membership/