Four fire engines and around 25 firefighters were called to a fire at a shop and offices on Bishopsgate.
An oven in the basement kitchen of the six-storey building was damaged by the fire. Around 30 people left the building before the Brigade arrived. There were no reports of any injuries.
The Brigade was called at 1116 and the fire was under control by 1157. Fire crews from Whitechapel, Shoreditch, Bethnal Green and Shadwell fire stations were at the scene.
The cause of the fire is under investigation.