Four fire engines and around 25 firefighters tackled a fire at a restaurant with flats above on South End in Croydon.
A ceiling void and lateral bathroom ducting between the first and second floors of the three-storey building was partially damaged by fire. There are no reports of any injuries.
The Brigade was called at 1708 and the fire was under control by 2028. Crews from Croydon, Purley, Woodside and Wallington fire stations attended the scene.
The cause of the fire is under investigation.