Firefighters were called to a bus alight on Brixton Hill.
Part of a double decker bus was damaged by fire. The driver and around 20 passengers left the bus before the Brigade arrived. There were no reports of any injuries.
The Brigade’s 999 Control Officers took 19 calls to the blaze.
The Brigade was called at 0950 and the fire was under control by 1022. One fire engine from Brixton Fire Station attended the scene.
The cause of the fire is under investigation.