A fire broke out on an industrial estate on the North Circular in Stonebridge NW10 on Saturday morning. An electrical intake room was damaged by fire and two members of staff escaped before firefighters arrived on the scene.
Four fire engines and 21 firefighters from West Hampstead, Stanmore, Willesden and Park Royal fire stations attended the incident.
The Brigade was called at 1044 and the fire was under control by 1138. The cause of the fire is under investigation.