Firefighters have issued a smoking safety reminder after a fire at a flat in Churchill Terrace in Chingford.
Half of the second floor flat and part of the roof of the building were damaged by fire. There were no reports of any injuries.
The Brigade's fire investigators believe the fire was accidental and caused by the careless disposal of smoking materials.
A London Fire Brigade spokesperson said: "This incident shows why it's so important to make sure you put your cigarettes out properly when you've finished smoking.
"If you don't you risk causing a fire."
The Brigade was called at 1432 and the fire was under control at 1545. Four fire engines and around 25 firefighters from Walthamstow, Enfield and Edmonton fire stations were at the scene.