In reply to Jane Smith:
I can only assume you are related to the owners or the management of the quarry.
Climbing is often misunderstood and land owners often are concerned about liability on their land. The British Mountaineering Council (BMC) can provide information about this. The following is a link to an article and a PDF with information about this. I'm not sure if this is the latest version but should be a good starting point if this is one of your concerns.
https://www.thebmc.co.uk/why-rock-climbers-arent-a-liability
The BMC access team would also be a good point of contact first for dealing with other concerns. Negotiating a way forward is better than just telling people they can't do something.
I suggest emailing office@thebmc.co.uk who will pass your message on to the correct member of staff.
Post edited at 08:38