Six fire engines and around 40 firefighters tackled a flat fire on Rowley Way in South Hampstead.
A three-roomed flat on the third floor of the building was destroyed by fire. There were no reports of any injuries.
The Brigade's 999 Control Officers took 34 calls to the blaze and used 999Eye to live stream the blaze from a smart phone to screens in the Control Room, allowing for greater visibility of the incident.
When a 999 call is received by the Brigade, the caller may be asked if they would like to provide a live video stream of the scene using their smartphone. The Control Officer will send a text message with a secure, one-time-use link that opens a live stream direct from the phone to the Control Room. 999Eye provides better situational awareness and allows us to offer the best advice based on live footage.
The Brigade was called at 1457 and the fire was under control by 1601. Fire crews from Paddington, North Kensington, West Hampstead and surrounding fire stations attended the scene.
The cause of the fire is under investigation by the Brigade and the Metropolitan Police Service.