Thanks all. The email with confirmation approach makes a lot of sense, it seems odd though that they don't suggest this themselves.
It's Footman James on an agreed value policy. The price was reasonable and they were pleasant to deal with and as the van's been off the road most of the time I haven't worried too much but their approach to the modifications always niggled. I have some new mods to declare too like disc brakes so need to get this right.
The policy is limited mileage too but they never ask for evidence of it, actually they only asked what it was the first year.
Might give Lancaster a ring. I have a mate with Flux who has everything stated but I've heard a lot of mixed reports about them. Any other suggestions for good companies?
There must be a lot of people with Minis where they've been modified by previous owners and the present owner isn't aware that it isn't standard. Wonder how many problems that causes!
I'm interested that you are insured with Footman James, my 205 is insured with them and twice I have asked about insuring my Mini with them, but was told that they don't insure modified cars!
As for the limited mileage, the insurance company will get this information from MOT data (assuming that the car is of MOTable age?) so it's worth not going over your quoted mileage, or it's an excuse for them not to pay out!