Hi there, I have a life policy with Legal and General. It covers me for light aviation (unlimited hours and unlimited in terms of geography) and for flying professionally. It isn't that much more expensive than a standard life policy. I used a broker in the UK (Sovereign) and although they have now had a restructuring, their number should still be in the phone book and it might still work.
You could also try BALPA??
All the best,
Hufty.