Four fire engines and around 25 firefighters tackled a fire at a block of flats on Australia Road in White City.
Part of a three roomed flat on the fourth floor was damaged by the fire. Four people left the building before the Brigade arrived and were treated on scene by London Ambulance Service.
Control Officers took the first of four calls at 0854 and mobilised crews from Hammersmith, North Kensington and Acton fire stations to the scene. The incident was over for firefighters at 0924.
The cause of the fire is under investigation.