hi you dont need a green card for europe .but some insurers dont cover fully comp for you to be out of uk for a long spell. they do have to give you the minimum ins cover for all countries in the eu for all year. becareful taking your vehicle out for over 12 months . you really need to keep it mot and taxed to be legal and thats where the problems start . anyway lots of people have trailers its the only way for the older generation to get round the life style of a traveller. they need medicals at 70. make sure you have a licence to allow a trailer. no problems with a trailer i use a little one .ha ha . well a baby one .
every thing depends on who you insure with though , safeguard ,comfort and saga i believe dont limit your stay . have fun fire away with questions .there are alot of us to answer and confuse you even more . cheers alan.,