Firefighters have issued a reminder of their smoking safety advice following a flat fire on Milton Road in Croydon.
A second-floor balcony was destroyed by fire. There were no reports of any injuries.
The Brigade's fire investigators believe the fire was accidental and caused by the unsafe disposal of smoking materials.
A London Fire Brigade spokesperson said: "We’d rather you didn’t smoke at all, but if you are 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.
"If you're smoking on your balcony, you should never throw your cigarette over the side. It could easily catch light to possessions on a balcony below or next to yours.”
The Brigade was called at 0134 and the fire was under control by 0221. Croydon, Woodside, Norbury and West Norwood fire stations attended the scene.