Four fire engines and around 20 firefighters and officers were called to a house fire on Victoria Square in Westminster last night.
Half of the ground floor and first floor were damaged by fire with part of the second floor and third floors of the four floored property also damaged in the blaze.
A smoke alarm in the property alerted the resident to the fire prompting her to call the Brigade and leave before fire crews arrived on the scene. She was treated by London Ambulance Service crews before being taken to hospital as a precaution.
Watch Manager Steve Hockin who was at the scene and said:
“On arrival the ground floor and first floor of the property were well alight with flames coming out of the door and windows. Crews worked extremely hard to stop the fire spreading to neighbouring properties.
"Yet again smoke alarms alerted a resident who then dialled 999. Everyone should have at least one working smoke alarm on every level of their home. This will give the earliest warning if there is a fire in your home."
The Brigade was called at 0046 and was under control by 0200. Fire crews from Chelsea, Lambeth and Soho fire stations were at the scene.
The cause of the fire is under investigation.