Firefighters were called to a roof collapse at a mid-terraced house converted into flats on Blackhorse Road in Walthamstow.
Most of the roof of the building collapsed into the loft space. Firefighters led a woman to safety. Four adults and two children were evacuated from adjacent properties and a 25-metre cordon was put in place as a precaution. There were no reports of any injuries.
The Brigade was called at 0940 and the incident was over for firefighters by 1227. Two fire engines from Walthamstow Fire Station and a fire rescue unit from Edmonton Fire Station attended the scene.