Firefighters led two people to safety from a fire at a residential block on The Hyde in Colindale.
There was a small fire in a communal area on the second floor of a three-storey building. Firefighters led two people to safety from a second floor flat, who were treated on scene by London Ambulance Service crews after suffering from smoke inhalation.
The Brigade was called at 0400 and the fire was under control by 0500. Fire crews from Hendon and Mill Hill fire stations attended the scene.
The cause of the fire is under investigation.