The BMC guidance on climbing walls opening is at:
https://www.thebmc.co.uk/covid-19-coronavirus-climbing-walls-gyms-need-to-know
It says walls are reopening from 25th July.
The Foundry and The Works will be open from 25th July – according to their web sites. From its web site it looks like Awesome Walls is already open.
The BMC guidance starts with: ‘We love climbing, but it’s not worth risking infecting others just to get your fix. Whether you choose to head down to the wall is up to you and your decision will depend on your personal circumstances.’
The Association of British Climbing Walls’ advice to walls is at:
https://www.abcwalls.co.uk/wp-content/uploads/Climbing-Centres-Covid-19-Reopening-Guide_07b-Public.pdf
I’ve also attached it. It’s worth reading to inform your decision.
Best wishes
Geoff