Cheers for the responses guys.
I tried Norton but they wanted it in a garage (its in secure parking that cannot be seen from any public highways, but that wasn't good enough).
AON said I had to be 30 and I'm 28 :) - its hard to p1ssed off with being too young really!
A-Plan = £850, which is half of the nearest quote. Only thing is that they said that modded parts would be replaced with standard, which means I would stand to lose a bit if it was nicked, but thats the risk you take - I would never get back the money I spent on it anyway. Not sure how they'd replace wide arches with standard ones though :D
Cheers again,
Rich