Firefighters rescued a woman from a flat fire on Green Bank in Wapping.
Part of a five-roomed flat on the first floor of the building was damaged by fire. Firefighters wearing breathing apparatus rescued a woman who was taken to hospital by London Ambulance Service crews.
The Brigade was called at 0430 and the fire was under control by 0503. Three fire engines and around 15 firefighters from Shadwell, Whitechapel and Dowgate fire stations attended the scene.
The cause of the fire is under investigation.