Another Colchester resident, must be breeding like flies round these parts!
UK cars all had the Brembo brakes and folding mirrors IIRC, and the Rays were an option anyway (or are very easy to add afterwards for cheaps). Certainly nothing like that would put me off the car if you're happy with cloth and non-Bose, and the non-Bose is actually a positive as the Bose is bloody awful!
Check the warranty details, I'd be working on the assumption that nothing expensive will be covered fully due to various clauses or low labour rates though. Got a link to the car at all?