There is a big penalty in terms of parts price for us Island dwellers. Anything much bigger than a normal letter usually costs an extra £20 or so delivery, often much more. As far as getting a car registered etc in uk, its basically a fairly simple paperwork (& chequebook ) procedure as long as it is MOTd. You'd have to check with a local vehicle licensing office for details, they have probably introduced extra hurdles since I last did it.