Thank you, Chris.
There was an email in from Customer Service at RMG timed today at 00:37:12 saying they have asked their contractors to attend “within 1-2 working days“.
I have written back to say I think the issue needs to be sorted more urgently and have suggested they instruct Rob Douglas and given his contact details.
Btw, this follows a period of the door not closing properly (also reported to RMG), which remained the case up until the current issue of the lock being jammed shut.
In the context of basically being trapped in the building, I have been surprised to find that phone lines at RMG are open Monday to Friday only with no out-of-hours emergency contact number of which I am aware.
I am glad you were in yesterday afternoon to help me exit!