Just phoned them to add the dump valve and cone filter (yes I know they have been on a week).
Got told "We've been to a meeting and been told we can only cover certain modifications". Then got given a list. "Car Audio, Alloy wheels, Sunroof, Towbar, Child seats, Tyres" + a couple of other things. I asked "Does that mean I can't add any engine modifications to the policy"?
The reply was "Yes you can add them, I will make a record on your account and policy, nothing will be sent in writing, but it is permanently recorded while you are with us, but in the event of a claim they notified but aren't covered".
There was no charge for this unlike a lot of places.
The decision was made by all the underwriters they use, after a lot of people were claiming for heavily modified cars fully covered and involved in accidents.
So it seems now mods are free, but not covered as was previous.
Seems the only things you can't do is increase engine size as it won't fit their model DB. So it looks like the Jun Stoker kit is out for now.