Six fire engines and around 40 firefighters were called to a fire at a mid-terraced house converted into flats on Hornsey Rise Gardens in Islington.
Half of a three-roomed flat on the ground floor was damaged by fire. Firefighters rescued a woman from a first-floor flat roof at the rear of the property via a short extension ladder. One man left the building before the Brigade arrived and was taken to hospital by London Ambulance Service crews.
The Brigade was called at 0646 and the fire was under control by 0830. Fire crews from Kentish Town, Holloway, Hornsey, Islington, Euston and Tottenham fire stations attended the scene.
The cause of the fire is under investigation by the Brigade and the Metropolitan Police Service.