Three fire engines and around 15 firefighters tackled a flat fire on Curtis Drive in Acton.
A small part of a three-roomed flat on the first floor of a residential building was damaged by the fire. Firefighters wearing breathing apparatus led two women and a child to safety via an internal staircase. They were treated on scene by London Ambulance Service crews.
The Brigade was called at 2058 and the fire was under control at 2133. Fire crews from Acton, Park Royal and Willesden fire stations attended the scene.
The fire is believed to have been accidental caused by clothes left on an extractor fan.