Traffic officers are appealing for information and witnesses to come forward following a serious road traffic collision in Hall Road, Isleworth .
Police were called at 1.40pm on Monday (February 1), to reports of a pedestrian in collision with a green Ford Fiesta in Hall Road near the junction with Whitton Dene.
Officers, London Ambulance Service and London's Air Ambulance attended the scene and found a 51-year-old woman in a critical condition. She was taken to an east London hospital where she remains in a serious condition.
Police say the driver of the Fiesta and his passenger left the scene on foot shortly after the collision.
Two men, aged 20 and 22 respectively, were arrested a short time later in Warren Road and taken to a west London police station.
They were subsequently released on police bail to return on a date in mid-April pending further enquiries.
Anyone with any information is asked to contact the Serious Collision Investigation Unit at Merton on 020 8543 5157.