You can get a 'car enthusiasts policy' from Tradex which is a Traders type policy for non Traders but you need to be over 25, I've got one and it's the best thing I ever did, i'm insured for any car I own for £800 a year, theres 6 cars on it at the mo including the cossy (only restriction is a Cat 1 alarm but everyone asks for them now anyway).

Steve