Eight fire engines and around 60 firefighters and officers were called to a fire in a block of flats on Daleham Gardens in Hampstead during the early hours of this morning. An aerial appliance was also used to help fight the fire.
Crews rescued a woman from the building but sadly she was pronounced dead at the scene. Around 20 people left the flats before the Brigade arrived.
The fire badly damaged the ground and first floors of the four storey building, as well as destroying its roof and second and third floors.
Motorists are being advised to avoid the area while crews deal with the incident.
The Brigade was called at 0152 and the fire was under control at 0452. Firefighters will remain at the scene damping down into the morning.
Crews from West Hampstead, Kentish Town, Euston, Paddington and Holloway fire stations are at the scene.
The cause of the fire is under investigation.