Four fire engines and 21 firefighters and officers were called to a fire in the basement of a livery hall on Gresham Street in the City.
The fire damaged part of the four storey hall's basement. Around 50 people left the building before the Brigade arrived.
The Brigade was called at 1634 and the fire was under control at 1808. Crews from Dowgate, Soho, Shadwell and Dockhead fire stations attended the scene.
The cause of the fire is believed to have been a fault in a fluorescent light fitting.