A woman and a child were taken to hospital after a fire broke out on the 20th floor of a tower in southwest London.
London firefighters dispatched 70 firefighters to Westbridge Road in Battersea shortly after 8 p.m., as online footage showed flames flaking from the top of the block and a plume of dark smoke drifting across the sky.
Three people left the affected apartment before the teams arrived, including a woman who inhaled smoke, while 50 other people left the building.
Four people were assessed at the scene by the London ambulance service.
London firefighters have received 18 calls regarding the blaze.
Station Commander Pete Johnson said: “The crews encountered a lot of smoke billowing from the top of a building upon arrival.
“There was also a lot of flames visible, which caused a lot of calls to our screening officers. There are a number of road closures in place. “
The fire was brought under control at 8:53 p.m. The cause is not known at this stage.
20-year-old student Ishika Deb, who lives in a nearby apartment building, said: “I heard a bang and broken glass. I went out and saw that there was glass on the floor. Then I heard a bang, looked up and saw fire.
She said she heard some bangs and then noticed that “ashes were coming out”.
Fire crews from Battersea, Fulham, Wandsworth, North Kensington and surrounding fire stations are on the scene.
PA Media contributed to this report