Why this secrecy? What type of plane was it and where was it based?
It's all very secrative. Some people on another website stated they know the plane, and know the guy. Notwithstanding the next-of-kin issue, surely the type of aircraft would be known at this time?
As a home build it could be the only one flying in UK or one of a very small number the next of kin issue is therefore potentially significant.