Six fire engines and around 40 firefighters were called to a fire at a shop on the High Street in Hounslow.
Part of a ground floor shop, with residential properties above it, was damaged by fire. There were no reports of any injuries.
The Brigade was called at 1045 and the fire was under control at 1150. Fire crews from Heston, Feltham, Twickenham and Southall fire stations attended the scene.
The cause of the fire is under investigation by the Brigade and the Metropolitan Police Service.