Watch: Fire rips through flats in Wembley
About 70 firefighters are tackling a blaze at a block of flats in north-west London.
Ten fire engines were called out to Elm Road, Wembley, just after at 16:40 GMT.
Video from the scene showed fire spreading between flats, while a firefighter on an aerial ladder sprayed water over the building.
Firefighters from Wembley, Park Royal, Northolt and surrounding fire stations were called to the scene, the London Fire Brigade said.
It said the cause of the blaze was not yet known.