Detectives are investigating an attempted burglary at a home in Greenford.
A woman returned to her house in Oldfield Lane North on Thursday May 28 at around 5.40pm and saw a man standing in her garden by the back door.
The man ran off, before the woman ran down an alleyway outside her house and confronted two other men leaving her garden.
She shouted at the suspects and they ran off towards Clare Road.
The first man walked off towards Rugby Avenue, where he was seen getting into a silver car.
It was subsequently discovered that a back door of the premises had been forced, but no property had been taken.
The first suspect is described as male, white, 5ft 6ins tall, 28 to 30-years-old, with short cropped hair. He was wearing a navy blue hoody.
Suspect two is described as male, white, 5ft 8ins tall, around 18 to 20-years-old with brown cropped hair, and was wearing a tracksuit.
Suspect three is described as male, white, medium build, in his early 20s and had brown spiky hair. He was wearing a blue hooded top.
Ealing police are appealing for witnesses and information.
Anyone who can help is asked to call Detective Sergeant Mark Hunt of Acton CID on 101 or Crimestoppers anonymously on 0800 555 111.