Whether compesation received on transfer /surrender of life /patron membership of sports club is a capital or revenue receipt

There seems to be no case law available exactly on this point but as it is one time receipt of payment and there was meagre cost for obtaining membership many many years ago ,it can be treated as capital receipt or alternatively can the original cost of membership at the time of admission can be indexed treating it as capital asset.To my mind there is a risk in treating it as exempt being capital receipt.