Ten fire engines and around 70 firefighters were called to a fire at a warehouse on Alperton Lane in Wembley.
Half of the ground floor of a two storey warehouse was destroyed by fire.
The Brigade's Control officers received the first of 13 calls alerting them to the fire at 1447. They mobilised crews from Wembley, Acton, Northolt, Southall, Willesden and Chiswick fire stations. The fire was under control by 1824.
The cause of the fire is under investigation.