Four fire engines and around 25 firefighters were called to a fire at a block of flats on Oak Square in Stockwell.
Part of a flat on the first floor of an eight-storey block was damaged by the fire. Six people left the affected property before the Brigade arrived. There were no reports of any injuries.
The Brigade was called at 1616 and the fire was under control by 1718. Fire crews from Brixton, Lambeth, Clapham and Battersea fire stations were at the scene.
The cause of the fire is under investigation.