A 93-year-old who is blind and suffers from dementia has been missing since yesterday.
David Lewin has not been seen since approximately 4pm at his home in Chamberlayne Road, Brent, yesterday.
He is believed to have his freedom pass on him and might have boarded a train at Mill Hill Broadway Station.
Mr Lewin is described as balding with white hair, and was wearing beige trousers and glasses and uses a walking stick.
Police have said his family are “extremely concerned”, adding it is imperative he is found quickly due to his age and physical condition.