Five fire engines and 31 firefighters and officers were called to a fire on the roof of a hotel in Ebor Street, Hackney.
Part of the internal chimney and all of the extractor fan on the roof were damaged by fire. Around 300 people evacuated the building before the arrival of the Brigade. There were no reports of any injuries.
The Brigade was called at 1906 and the fire was under control at 2039. Fire crews from Shoreditch, Whitechapel, Bethnal Green, Dowgate and Shadwell fire stations attended the scene.
The cause of the fire is believed to be a fault in an extractor fan.