Four fire engines and around 25 firefighters were called to a fire at a flat on Olympic Way in Wembley.
Part of a communal kitchen on the second floor of a student accommodation block was damaged by fire. There were no reports of any injuries.
The Brigade was called at 2021 and the fire was under control by 2058. Fire crews from Wembley, Willesden and Stanmore fire stations attended the scene.
The cause of the fire is under investigation.