Caving is a potentially dangerous activity (I have several dead caving friends who died caving) and so under no circumstances should cavers be placed in a position where they are forced or coerced into participation in caving activities against their own better judgement. It is also preferable to have people caving within clubs, however regularly or infrequently, and not to force individuals to have to cave individually outside of caving clubs.
Caving is done voluntarily by people who come together to share the enjoyment and the risks of caving as a group activity. Such groups can be as small as two or three people or up to tens in numbers - although the latter tends to upset the likes of clubs such as SWCC, when a large group turns up and they all want to go caving together in OFD . . .
Caving is also about the science of caving, which caving club members carry out at home or in a laboratory - such as in computing and drawing up cave surveys; analysing hydrological tests; and collating and describing samples and specimens collected from caves. Caving also requires reading about caving, which members do through their caving club libraries - but largely at home - and this doesn't make the act of going caving any less of a sporting activity.
Someone in the BCA needs to make a special case for caving, taking into account the importance of the collective knowledge, which is enhanced by a wide membership base for caving clubs, drawing in the experience of age as well as the energy of youth, and that it would be grossly unfair and unreasonable to legislate that financial allowances for genuine sporting clubs are only permitted if this wide membership base is severely curtailed, through an artificial hoop-jumping numbers game, which is not applicable to highly specialised sporting pursuits such as caving.
The real test of whether caving club members are serious about caving is whether they carry active caving insurance and it seems only fair and reasonable that caving clubs should be permitted to define their active membership base on the basis of the number of caving members subscribed for active caving insurance, rather than through participation in an artificially determined number of 'club' caving trips per year.
If you look at the situation concerning the presence of Radon gas underground in certain parts of the UK, then cavers should be able to choose their own level of participation in the activity, according to their personal circumstances and past experience/exposure, and to require that they should do otherwise would clearly put HMRC into the realms of being liable should any deaths be subsequently attributed to excessive exposure. This is especially the case with cave diving, where there should be no external pressure to perform whatsover, should a diver feel the circumstances and conditions are not suitable for cave diving.