More than 50 firefighters have been tackling a blaze today (July 3) that spread across four storeys of a block of flats in London.
Eight fire engines were called as flames licked up the side of the building in Heritage Lane, West Hampstead, north-west London, at 11:25am.
The fire was believed to have started on a balcony before it spread to balconies above, but London Fire Brigade (LFB) said that the cause was not known at this time.
The added that no casualties had been reported in the fire, which has now been brought under control.
Residents said they saw flames race up the side of the building and thick smoke pouring into the skies above.
LFB reported that 999 operators had received more than 40 emergency calls from worried residents.
Fire crews from West Hampstead, Paddington, Willesden, and surrounding fire stations are still attending the incident and will remain there damping down the flames.
The building is sandwiched between London Underground tracks that serve the Jubilee and Metropolitan lines and the London Overground tracks.