Four fire engines and 21 firefighters and officers were called to a fire at a sheltered housing block in Colville Terrace in Notting Hill.
Part of a flat on the fourth floor of the building was damaged by fire.
The Brigade was called at 0212 and the fire was under control at 0314. Fire crews from North Kensington, Kensington and Paddington fire stations attended the scene.
The cause of the fire is under investigation.