Dozens of stations across London's Tube network will today be closed as the capital braces for a lockdown over the coronavirus.
Mayor Sadiq Khan said journeys should not be made "unless absolutely necessary" as he unveiled plans for reduced services.
From Thursday, up to 40 London Underground stations that do not interchange with other lines will be closed until further notice.
Transport for London (TfL) services will from then on be gradually reduced in a move designed to allow only critical workers to make essential journeys.
It comes after Boris Johnson on Wednesday refused to rule out the possibility of “further and faster measures” to control the spread of the virus in the capital, where the epidemic is running ahead of the rest of the nation.
From Friday there will be no Waterloo & City line, while the Night Tube will not run until further notice.
London buses will operate fewer services, but still run at night, and everyone will be urged not to use public transport for anything other than essential journeys.
London Underground stations facing closure:
Bakerloo Line: Lambeth North, Regents Park, Warwick Avenue, Kilburn Park, Charing Cross
Central Line: Holland Park, Queensway, Lancaster Gate, Chancery Lane, Redbridge
Circle Line: Bayswater, Great Portland Street, Barbican
District Line: Bow Road, Stepney Green, Mansion House, Temple, St James's Park, Gloucester Road
Jubilee Line: Swiss Cottage, St John's Wood, Bermondsey, Southwark
Northern Line: Tuffnell Park, Chalk Farm, Mornington Crescent, Goodge Street, Borough, Clapham South, Tooting Bec, South Wimbledon, Hampstead
Piccadilly Line: Caledonian Road, Arsenal, Covent Garden, Hyde Park Corner, Bounds Green, Manor House
Victoria Line: Pimlico, Blackhorse Road
Mr Khan said: "People should not be travelling, by any means, unless they really, really have to.
“Londoners should be avoiding social interaction unless absolutely necessary, and that means they should be avoiding using the transport network unless absolutely necessary.
"London will get through these extraordinarily challenging times, and ensuring the capital's critical workers can move around the city will be crucial.
"Frontline staff across our health and care service - as well as those ensuring Londoners stay safe and can access food and other essentials - should be commended for their hard work. We owe it to them to do whatever we can to help them do their jobs effectively.
"I'm urging Londoners to only use public transport for essential journeys. Everyone should follow this and the other advice to help keep themselves and each other safe."
