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from the vid on BBC it looks like virtually every single window is lit, no idea what could have caused something like that, except maybe a big build up of gas or fumes from materials/equipment from the renovations someone mentioned?
"Extremely saddening and the worst thing is that it could have been prevented."
don't think you can say that w/ certainty until you know the cause.
With certainty no i can not but i am sure a lot more could have been done and we shall soon find out.I also live in flats that have recently been renovated with fire retardant materials and a sprinkler system so if we got them everyone else should be entitled too.