Re: If I join a gym (club) do I become responsible for it's debts?
I too think it is unlikely, however be wary if you are asked to sign a document with ' Acceptance of responsibility for debts' as a heading and always read the terms and conditions.
I don't know if you have considered this but you should also be aware that in joining this club you may well be asked to engage in group physical activities which could well involve sweating and even likely showering thereafter. I would advise anyone contemplating this kind of action to indeed be very wary.
Perhaps you should consider a consultation with your family solicitor first and certainly seek advice before signing any documents as aforesaid.