Useful advice from the BMC.  CNCC intend to make a similar statement before the weekend after consulting with CRO and others.  i doubt the message will be much different to this.

https://www.thebmc.co.uk/can-i-start-climbing-and-hill-walking-again?

That seems pretty well considered; thanks for posting Badlad.
I guess the message is, if we do play out, on a limited basis, do it intelligently.
It will be good to see the CNCC's equivalent.