Five fire engines and around 35 firefighters were called to a fire at a restaurant with flats above on South Lambeth Road, SW8.
Half of the ground floor, a section of the basement and part of the restaurant's ventilation system were damaged in the fire. Three people left the premises before the arrival of the Brigade.
The Brigade was called at 1110 and the fire was under control at 1251. Fire crews from Lambeth, Clapham, Peckham, and Soho fire stations attended the scene.
The cause of the fire is under investigation.