Firefighters tackled a fire on Golders Green Road in Golders Green.
The fire affected a shop and storage area. The ground floor was destroyed. Part of the first floor and a small part of the second floor were damaged by the fire.
Speaking from the scene earlier today, Assistant Commissioner Craig Carter said: "This morning, just before 0700, we were called to a fire on Golders Green Road.
"Fifteen fire engines and around 100 firefighters tackled the fire at its height, which affected a ground floor shop and a storage area to the rear, which partially collapsed. The flats above and surrounding properties were safely evacuated as a precaution and a rest centre was set up nearby. Thankfully, there are no reports of any injuries.
"The fire produced a significant amount of smoke, and we advised people in the area to keep their windows and doors shut whilst firefighters worked to extinguish the fire.
"Our specialist Fire Investigators, in conjunction with the Metropolitan Police Service, have worked at pace to establish that the circumstances of the fire are not believed to be suspicious and investigations on the cause and origin of the fire are ongoing.
"Several road closures were in place, including on Golders Green Road and several side streets.
"One of the Brigade's 32-metre turntable ladders was used at the scene as a water tower to help fight the fire from above. A second 32-metre turntable ladder was used as an observation tower to provide the Incident Commander with an aerial view of the fire. Drones were deployed to survey the incident from above, providing live thermal images.
"I know that this fire will have caused concern both for those in Golders Green and the wider community, and our Community Engagement Team have provided support and reassurance to displaced residents and those who live and work nearby.
"I want to thank our crews for their hard work, and our partners in the Metropolitan Police Service, London Ambulance Service, Hatzolah, Community Security Trust and the local community who supported us on scene."
The Brigade received the first of 59 calls about the fire at 0647 and Control Officers have mobilised 15 fire engines and around 100 firefighters from Finchley, Willesden, West Hampstead and surrounding fire stations to the scene. The fire was under control by 1427.