From what I can see it's just the balconies that have been affected and not actually the cladding. It is still worrying and luckily it was daytime.

https://www.bdonline.co.uk/news/acm-panels-not-involved-in-east-london-flats-fire/5111740.article

@NazArt well it's confirmed. ACM panels were not involved but they do need to be removed and replaced. The worry that I have is (this is still not confirmed by LBF) that this fire may have started in a fuse box in one of the flats and the smoke detection system failed during the fire so the fire doors failed to close allowing smoke to spread and residents didn't hear any alarms.

As you probably know, individual flats in all buildings are meant to have fire-rated walls, floors, ceiling, doors etc., with minimum for the front doors being FD30 (30min fire resistance). The plasterboard also should have a minimum of 30min fire resistance (eg. 12.5mm Gyproc WallBoard each side of Gypframe 48 S 50 studs provides 30 minutes. Single layer 15mm Gyproc FireLine each side of Gypframe 48 S 50 studs provides 60 minutes).

Luckily this fire was contained.

@Jane that's right, there was the incident with the Grenfell Tower were people were asked to stay in their flats, but the breach of the fire to the outside cladding was when the fire spread quickly and sadly made the situation much worse.