On its Twitter page, London Fire Brigade said: “The fire in Kew is under control – crews are now tackling remaining hot spots and small pockets of fire. No injuries have been reported.”
National Archives UK tweeted: “Thank you for all your concerned tweets. We will update as soon as we can.”
The National Archives is the Government’s official archive of original documents and records, dating back more than 1,000 years.
National Archives UK tweeted later: “We can confirm the fire has been put out, but we will stay closed to the public in order to recover the building.”