I suspect a lot of this (with the schools as well as the theatre) is down to an excess of caution. Once they've been inspected I'd imagine most of them will be deemed safe and will reopen.
I’m not an expert, it doesn’t sound like many are on this stuff!
Fingers crossed it is some minor remediation. It sounds the unpredictability of this material can pose the danger, not ideal in a foyer. This stuff sounds like Grenfell all over again. Can you imagine if there is a major incident at one of these schools?
A great time for structural engineers and surveyors. There’s always some industries coining it in from others misery.
No idea on the financial health of the Derngate but missing a month must hit them pretty badly, without the associated costs to deal with the issue, although this will fall on the WNC as landlords. It’s sounds as though they may relocate some events, so perhaps a good time for the Deco which is probably bullet proof!