A series of failings that hampered the efforts of firefighters to tackle the Grenfell Tower fire and rescue the building's residents have been identified by a BBC investigation.
Crews cited low water pressure, radio problems and equipment that was either lacking or did not arrive before the fire on 14 June got out of control.
Newsnight has learned a high ladder did not arrive for more than 30 minutes.
The London Fire Brigade says it has changed its procedures since the fire.
A high ladder will now automatically be sent to a fire in a tower.
An independent fire expert said having the high ladder, which is also known as an "aerial", available earlier would have given firefighters a better chance of stopping the fire when it jumped from a fourth floor flat in the tower block and began to race up the side of the building.
More than 200 firefighters and 40 fire engines were involved in battling the fire that engulfed the block in North Kensington, west London.