All well and good having an S92 circling outside the block to collect people from the roof, but if you cannot get out your flat door due to the smoke filled stairwell then its completely irrelevant.
Many people have already asked why the NPAS aircraft circled and didn't appear to do anything, (if it was the london cab then it should have been relaying imagery of the fire on the upper floors to the LFB command unit).
Whilst sprinklers may have made a difference, so would smoke hoods....
CM