Four fire engines and around 25 firefighters were called to a fire in a flat in Duncan Road, Hackney.
Half of a four roomed flat on the second floor was damaged by fire. A man left the building before the arrival of the Brigade and was taken to hospital by London Ambulance crews.
The Brigade's 999 control centre took 11 calls about the blaze.
The Brigade was called at 0847 and the fire was under control by 0929. Fire crews from Bethnal Green, Shoreditch, Homerton and Whitechapel stations were at the scene.
The cause of the fire is under investigation.