Four fire engines and around 25 firefighters were called to a fire at a block of flats on Grange Vale in Sutton.
A flat on the ground floor of an 11-storey block was damaged by the fire. There were no reports of any injuries.
The Brigade was called at 1156 and the fire was under control by 1313. Fire crews from Sutton, Wallington, Mitcham and Wimbledon fire stations were at the scene.
The cause of the fire is under investigation.