Not having done it myself but having looked at it in the past I'd give advice on one aspect of importing an aircraft - do it via Denmark. They have a 0% VAT policy, so you can import your aircraft into the EU (via Denmark) without having to pay any VAT as you would if you brought it directly into the UK. That's a hell of a lot of money if you buy a nice SR22! A chap on the Flyer forums undertook such a ferry recently and posted fairly extensively on the ins and outs of the process.
There are pitfalls and red tape involved, but it's usually well worth the effort. The slightest paperwork mistake and C&E will have you bent over, pants round ankles in a flash. Hopefully others will comment in due course who have more practical experience.