The name of the company involved in the factory fire, which took place on Gorst Road in Park Royal on Friday afternoon (March 18), has not been revealed.
Four fire engines and 21 firefighters and officers dealt with the fire when an industrial bread oven on the first floor of the food production factory was damaged by the fire.
An extraction system also caught fire, extending the damage to the roof of the property.
Around 30 employees safely evacuated before the arrival of the fire brigade.
30 employees safely evacuated
Crews from fire stations including Park Royal, Acton, Willesden and Wembley attended the incident.
The London Fire Brigade confirmed that the cause of the fire in under investigation.
This is not the first time there has been a fire in the area. In April 2015 around 100 firefighters tackled a factory blaze at an industrial unit.
In September 2013 a fire broke out in a factory at Midland Terrace in Park Royal that resulted in 80 firefighters in attendance.
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