Four fire engines and around 25 firefighters tackled a blaze in a flat above a shop in St James’s Road, Croydon.
Most of the second and first floor of the two floor flat were damaged by fire. There were no reports of any injuries.
The Brigade was called at 0301 and the fire was under control by 0459. Crews from Croydon, Woodside and Norbury Fire Stations attended the incident.
The cause of the fire is under investigation.