I am with Pru Protect for mine, fully covered for flying and all inheritance tax will be taken care of etc...
I got the death defying questionnaire of what i get up to etc and was honest about the flying. They then send a special extra flying questionnaire asking what types I fly, how many hours a year, where im going to take off and land (how the hell am i supposed to predict that), type of license etc etc.
I answered what i could a wrote back a multiple page letter explaining things and infact asking them questions. For example, If i had a CPL (which is seen as better than a PPL) would that make my premium less.... stupid things like that. Even went into the stats that walking along the pavement is more dangerous etc..
I have an idea to do some European micro lighting next year and according to the financial advisor, she would have to check with them because it would be a temporary thing. However more than likely there would be no change of premium.
However in all, its adding around £100 per month to the premium being a pilot..