Six fire engines and around 40 firefighters were called to a fire at a scrapyard on River Road, Barking..
Three shipping containers and 20 scrap cars were damaged by fire.
The Brigade was called at 0421 and the fire was under control at 0651. Fire crews from Woodford, East Ham, Plaistow and Ilford fire stations attended the scene.
The cause of the fire is under investigation by the Brigade and the Metropolitan Police Service.