Video posted to social media shows flames shooting from the balcony and top floor window of Dunedin House in Manwood Street.
Eyewitnesses near the 17-story block also reported seeing flames.
London Fire Brigade shared a statement on Twitter confirming the situation with 15 fire engines and around 100 firefighters called to the scene.
Say: “Firefighters are tackling a fire on the 17th floor of a building in #Woolwich. Crews are also dealing with a fire involving approximately one hectare of grass across from the block.”
Firefighters battle a blaze on the 17th floor of a building in #woolwich. Crews are also grappling with a fire involving approximately one hectare of grass across from the block https://t.co/JgvxRTlFxe © @Mr_Stevo87 pic.twitter.com/ZGGQpfkiKJ
— London Fire Brigade (@LondonFire) July 20, 2022
No injuries have been reported at the time of writing.
The London Ambulance Service also shared a message on its social media saying: “We have sent a number of resources to the scene, including advanced paramedics and our Hazardous Area Response Team.”
The blaze comes just a day after the LFB marked a major incident in London following a series of wildfires in the capital yesterday (July 19).
Say: ‘We have declared a major incident as firefighters battle several large fires in the capital during today’s record heatwave.