Four fire engines and around 25 firefighters tackled a fire at a block of flats on Acton Lane in Park Royal.
Half of a flat on the first floor of the three storey building was damaged by the fire. Smoke logging affected the entire flat. There are no reports of any injuries.
Control Officers took the first of three calls at 1513 and mobilised crews from Park Royal, Willesden, Hammersmith and Wembley fire stations to the scene. The fire was extinguished by 1943.
The cause of the fire has been recorded as undetermined.