Four fire engines and around 25 firefighters were called to a fire at an industrial estate on Lockwood Way in Walthamstow.
A tonne of rubbish in an external loading area was alight and a small part of an external roof was damaged by the fire. There were no reports of any injuries.
The Brigade was called at 1832 and the fire was under control by 1906. Fire crews from Walthamstow and Tottenham fire stations were at the scene.