Four fire engines and around 25 firefighters were called to a fire at an industrial park in Collett Way, Southall.
Around 10 tonnes of builders waste and two shipping containers were destroyed by fire.
The Brigade was called at 2243 and the fire was under control at 0055 (January 29). Fire crews from Southall, Heston and Hayes fire stations attended the scene.
The cause of the fire is under investigation by the Brigade and the Metropolitan Police Service.