Eight fire engines and around 60 firefighters were called to a grass fire on Walthamstow Marshes in Walthamstow.
Firefighters tackled their third grass fire tonight, where around three hectares of of grassland was destroyed by fire.
A London Fire Brigade spokesperson added: “During the hot weather, it is important everyone acts responsibly to prevent fires from occurring. As the weather has been so dry, it only takes a few sparks to lead to a fire spreading rapidly. In London, this is can be dangerous because so many of our green spaces lie close to homes and other properties.
“If you’re heading out, please don’t take a disposable BBQ with you. They can retain heat for several hours after use and are banned by local authorities from many of London's parks. Also make sure you are discarding of cigarettes properly and take rubbish home with you if no bins are available.
“At home, make sure your BBQ is positioned away from flammable items like fences, sheds, decking and trees and please don’t have any type of BBQ on your balcony. We’re also strongly advising people to avoid burning any waste in this type of weather and to not have bonfires, particularly in their gardens.”
The Brigade's Control Office received the first of 49 calls about the fire at 2055 and mobilised crews from Homerton, Finchley, Stoke Newington and other surrounding fire stations attended the scene. The fire was under control by 2323.
The cause of the fire is under investigation.