Police believe a missing mother and her six-week-old baby could be in Hampshire.
They say they are becoming “increasingly concerned” for Isobel Hughes, 20, and her daughter Mya, who were last seen at 10pm on Friday, Scotland Yard said.
Officers said they are concerned for baby Mya, who has a heart condition and requires regular medical checks.
Ms Hughes is 5ft 8ins tall, of slim build and has links to Windsor, Slough, Reading and Hampshire.
Officers urge anyone with information on her whereabouts to call Ealing police on 101 or Missing People on 116000, with the reference 16MIS013225.