Hi mark
i install clubs for a living and have had claims twice, all of which the venues tried to pass on
Firstly
Do not reply to any letters unless they are from a court
in which case take legal advise before proceeding
secondly
even if they pope rings you, state you can not make any comment with litigation pending
thirdly
Do not return to the premises for another event or even to pick up your coat, they may try to interview you with witnesses present.
fourthly?
Do not communicate with the injured party at any time, refer to second rule.
Best of luck, It will be hard not to talk to people about this, but its curtains for you if you do.
I'm sure that the clubs insurance will have to settle if you stay clear
Pete