As the flames started and spread up Grenfell Tower those living there were told to stay where they were. Even as smoke filled their flats and the heat melted windows and doors, still the fire service told residents not to leave.
A warning: Rags Martel's special report has images of the fire at Grenfell.
The reason? The policy known as 'Stay Put'. It's based on the theory that buildings are designed to stop fires spreading. At Grenfell Tower however it meant people became trapped.
The future of Stay Put is being scrutinised at the inquiry into the fire. And ITV News London understands that the first inquiry report is now finished and ready to be published within weeks.
But among survivors there is anger and disbelief that two years on from the fire there is no change in the advice you would be given if your tower block was on fire. Still you would be told to Stay Put.
There needs to be a huge review in Stay Put. Especially when building have materials on them that will make fire spread. So it's a defunct policy. Who would stay in their homes now? There has to be change. It can't be something that remains in place because it had it my view at detrimental effect so many families.
This is not just a London thing. This is a UK-wide issue. We need to research what is being put on buildings and what effect that might have if there is a fire. I think that's a huge challenge for authorities in the UK.
The London Fire Brigade stand by the Stay Put policy.
If a fire breaks out in another part of your building and you are not affected by fire. Our advice is that it is generally safer to stay within your flat unless conditions change.
The National Fire Chiefs Council, who are responsible for the policy, added:
Stay Put is a building strategy and is sound if the buildings are built and maintained properly. There many examples where Stay Put has worked perfectly well.
The Grenfell Inquiry did not respond to our requests for a statement.