In reply to mike reed:
Just thinking out loud, but it might be tricky to partially open the logbooks as you'd ideally need a list of countries where restrictions have been lifted (which I suspect would be hard to do), and even then restrictions might vary by state/region within in a country. Then there's the added complexity in the code base of implementing it.
I suspect UKC will want to go for an 'everything on' or 'everything off' approach, so I think it's likely the logbooks won't be open until climbing in the uk is allowed again.