Four fire engines and around 25 firefighters were called to a fire at a shed and garage on Greenford Road in Greenford.
A concrete shed was destroyed by the fire and part of a garage at the rear of a neighbouring property was damaged. There were no reports of any injuries.
The Brigade was called at 2009 and the fire was under control by 2117. Fire crews from Northolt and Southall fire stations attended.
The cause of the fire is under investigation.