Firefighters have issued a smoking safety reminder after a fire at a block of flats on Meadow Road in Lambeth.
Part of the flat roof of the ground floor entrance hall of the 18-storey block was damaged by the fire. There were no reports of any injuries.
The alarm was raised by a passer-by who saw flames coming from the roof and called 999.
The Brigade's fire investigators believe the fire was accidental and caused by a discarded cigarette from a flat above.
A London Fire Brigade spokesperson said: "If you're a smoker it’s absolutely vital you ensure your cigarette is completely out when you’ve finished smoking it.
“If you don’t, you risk causing a fire which could not only destroy your home, but also cost you your life.”
The Brigade's 999 Control Officers took 10 calls to the fire.
The Brigade was called at 2026 and the fire was under control by 2104. Four fire engines and around 25 firefighters from Lambeth and Brixton fire stations were at the scene.