Six fire engines and around 40 firefighters tackled a house fire on Connaught Road in Harlesden.
Part of the roof space of a two-storey semi detached house converted into flats was damaged by the fire. A small part of the roof space of the adjacent semi detached house was also damaged by the fire.
Fire Investigators believe the fire was caused accidentally by an electrical fault. Unfortunately there were no working smoke alarms in the property, luckily no one was injured in the fire.
A London Fire Brigade spokesperson said: “This incident is a timely reminder about the importance of having smoke alarms in your home. Not having working smoke alarms leaves you and your loved ones at risk.
“Homes need multiple smoke alarms or you won't be properly covered. As a minimum, you should have smoke alarms on every floor of your home - in the hallways and the rooms you use the most plus a heat alarm in the bathroom and kitchen.
The Brigade was called at 1808 and the fire was under control at 1858. Fire crews from Park Royal, Willesden, North Kensington and Wembley fire stations attended the scene.
A London Fire Brigade spokesperson continued: “Firefighters recommend that you have a look at our online Home Fire Safety Checker to make sure there are no hidden hazards in your home.
“The online tool will ask you a series of questions that will help us work out the level of risk in your home, or the home of someone you care for. It only takes a few minutes to get tailored advice to keep yourself and loved ones safe from fire.”