I have a part time trade policy, but this wouldnt be of much use to you as they only insure cossies 3rd party only, an unwanted affect of the 1980`s/90`s car theft problem i`m afraid!They cover all modified, but again only at third party. It`s been really handy to me as i do genuinely do a lot of trading, i`ve got a scooby, bm cabby, transit and various other shitters on it, but i`m either going to ramp up to full blown traders policy if i get the bodyshop, or i`ll knock it on the head, classic insure the cossie and just get policies for the rest. I have heard brentacre insurance (based in swansea) can be quite good for this sort of thing, my mate currently has a galaxy and he has promised to mirror his no claims on his heavily modified MR2, i think there are a few limited mileage things on the policy,but that should`nt prove too much of a problem in your case.