Police are appealing for information to try and identify a woman pulled out of the River Thames near Lambeth Bridge in the early hours of Friday morning.
Shortly after midnight on Friday Lambeth PCSOs on routine patrol near the River Thames became aware of a person motionless in the river near Lambeth Bridge.
Officers from the Marine Support Unit and a lifeboat crew were summoned and an unconscious woman was rescued from the water.
First aid was administered and an ambulance took the woman to a central London hospital where her condition is described as critical.
The woman is described as white, of medium build, aged approximately 55-65 and approximately 5'5' tall. She has brown hair, slightly grey at the front which could have been dyed.
She was found wearing black trousers, a pale blue jumper with another pale blue jumper with dark horizontal stripes over the top. A further woollen cardigan in two tones of blue was worn over these. She was wearing black Reebok trainers.
Possessions found on the woman were an Oyster card purchased on 6 June which shows extensive travel in the Northolt and Ealing areas with other journeys in the Catford and Bromley area.
The other possession was a key fob with a picture of a baby on one side and a handwritten name on the back of key fob with the name 'Kennedy' and a date of 14/10/06.
Anyone with any information on the identity of the woman should call the missing persons unit at Lambeth on 020 8721 3557.