Just had an email from them and they said this :-
I have told our insurance people that you and your fellow bockers are doing your bocking as a hobby and therefore carry no specific public liability insurance. We have been advised that if there was a claim against any of the bockers for whatever reason, the first call would be yourselves and your household insurance (apparently household insurance normally covers carrying out a hobby).
I'll email for detail about times I think they'd be happy to know we are coming for a bounce about but would like to know what sort of numbers would be there !?
I have a car (
) now if your on route and need a left get your thumb out
Ask me I may even go out of my way for you