thanks for replies; tried another dealer and they were even more at £636 inc vat (530 ex vat)
think I`ll just bite the bullet and go with the cheaper dealer as at least if something happens they cant wriggle out of it.... A couple of hundred more for peace of mind opposed to the cost of a new gear box, engine, 4wd system in `Year 5` of the warranty would be a sickener. Ive been told the 3yr service is only about £150 so every cloud and awe that!