Firefighters were called to a fire on Albion Road in Stoke Newington.
Sadly, a person was pronounced dead at the scene.
The Brigade was called at 0427 and the incident was over for firefighters by 0452. Four fire engines and around 25 firefighters from Islington, Holloway and Stoke Newington fire stations attended the scene.
The cause of the fire is under investigation by the Brigade and the Metropolitan Police Service.