London Fire Brigade received the first of 25 calls about the fire at just before 11.30pm, with crews dispatched from Willesden, Hendon, Finchley, Mill Hill, Wembley, Park Royal, West Hampstead, Stanmore and surrounding fire stations to the scene.
In total, 12 fire engines and around 80 firefighters raced to the scene next to the North Circular Road in Neasden.
