[QUOTE=slim_slag]Was mentioned earlier this month
http://www.pprune.org/forums/showthread.php?t=204940
Looked at that thread .Traffords policy is no help. I have one and spoke to them today. They refer to exclusion 3: no personal liability cover whilst in car, plane etc. Has to be that way as they could not possibly cover you for more (£2m) for a premium which is a fraction of the US insurers who only cover for max $1m. (owt for nowt principle)
As to whether the lawyers would really hound you; presume if they think you have any decent assets (UK house etc) then they would think it worth a go and just dealing with the legal correspondence wouldn't be much fun. Thinks - AOPA? Not the kind of culture which would say, nevermind, he's a Brit, he's only on holiday and he lives a long way away. This is the industry who will sue Cessna for megabucks for a "defective" 40 year old design when you forget the carb heat.
Thanks to all for their comments.