Four fire engines and around 25 firefighters were called to a fire at shop on Wood Street, Walthamstow.
A roll of carpet at the rear of the property was destroyed by fire and part of the ground floor was damaged by fire. The fire is also damaged a small part of an adjacent shop and a residential property.
One man was treated at the scene by London Ambulance Service crews.
The Brigade was called at 1307 and the fire was under control at 1532. Fire crews from Walthamstow, Leyton, Leytonstone, and Tottenham fire stations attended the scene.
The cause of the fire is under investigation.