Police have appealed for witnesses after a collision with a bus in Oxford Street left a pensioner fighting for her life.
A 73-year-old woman remains in hospital in a critical condition following the crash near Bond Street Tube station on Tuesday (May 24) afternoon.
Police said they were called to the scene at around 4.50pm and attended along with London's Air Ambulance and paramedics from the London Ambulance Service.
They said a female pedestrian was taken to hospital with head injuries.
The driver of the route 73 bus stopped at the scene and has been assisting police with their enquiries.
Detectives from the Met's Serious Collision Investigation Unit are looking into the incident and have appealed for anyone who was in or around the area at the time to get in touch by calling them on 020 8247 6935.
Tony Akers, Transport for London's head of bus operations, said: "At around 16:45 yesterday (Tuesday, May 24), a route 73 double deck bus, operated by Arriva, was involved in a collision with a pedestrian on Oxford Street close to the junction with Gilbert Street, W1. Emergency services attended the scene. There will be a full investigation into the incident."
The crash on Tuesday followed another serious collision in Oxford Street the previous day, involving a male pedestrian and a route 159 bus.