We have received this message from Princes Trust:

"Please see the attached link below. We were made aware this yesterday as part of our Glasgow AALS inspection.

https://www.theuiaa.org/mountaineering/safety-alert-for-fixe-lower-offs/

"I understand there has been situations where some of these chains have failed with potential disastrous consequences.

"Suggestion from AALS was to contact any organisations with any artificial indoor and outdoor climbing facilities who may use these type of chains. Get something in writing from them to confirm they are not using these type of chains before using their facilities."