The Government has just issued its response to Julian Glovers 2019 Landscapes Review. (See: https://www.gov.uk/government/publications/landscapes-review-national-parks-and-aonbs-government-response/landscapes-review-national-parks-and-aonbs-government-response)
I would refer you to the Glover report and specifically to Proposal 16: Consider expanding open access, which includes these words:
"But it feels wrong that many parts of our most beautiful places are off?limits to horse riders, water users, cavers, wild campers and so on. We hope that as part of the government?s commitment to connect more people with nature, it will look seriously at whether the levels of open access we have in our most special places are adequate."
The Government response to Proposal 16 is as follows:
"Proposal 16 recommends expanding open access rights to provide additional recreational opportunities. We aim to review the open access maps to clarify rights and inform any further consideration of expanding open access rights."
The Government is consulting on its response (see: https://consult.defra.gov.uk/future-landscapes-strategy/government-response-to-the-landscapes-review/). This initiative applies to Protected Landscapes, a much wider area than just CROW access land.
This is an important opportunity for cavers to follow up on David's good work by making the case direct to Government for them to implement the improvement in access for cavers included in Proposal 16.
I would hope that David on behalf of BCA would also respond to this consultation and to take a twin track approach to seeking improved access for caving.