Twelve fire engines and around 80 firefighters were called to a fire at a warehouse on White Hart Lane in Tottenham.
The ground floor, first floor and roof of a two storey warehouse unit were destroyed by the fire. There were no reports of any injuries.
Station Manager Mark Jordan, who was at the scene, he said: “Crews made steady progress throughout the morning to bring the fire under control and stop it from spreading to other units."
The Brigade's 999 Control Officers took 18 calls to the blaze.
The Brigade was called at 0337 and the fire was under control by 0759. Fire crews from Hornsey, Edmonton, Southgate, Stoke Newington, Holloway, Walthamstow and Enfield fire stations attended the fire.
The cause of the fire is under investigation.