A man is fighting for his life in hospital with a head injury police believe he may have suffered in an attack following a football match.
The critically ill 52-year-old was found after the game between Queens Park Rangers and Luton Town at about 9.50pm on Friday, near the Uxbridge Road junction with Devonport Road in west London.
Scotland Yard detectives believe he may have been assaulted or caught up in a fight following the Championship match and have appealed for witnesses.
The man, who is from the Luton area, was taken to hospital by London Ambulance Service (LAS) paramedics, and remains in a life-threatening condition.
Metropolitan Police Detective Constable Arrash Faghihi said it happened in an "extremely busy" area and urged anyone with mobile phone footage that could be relevant to contact the force.
He said: "This man sustained a serious head injury, and it is vital that we make contact with witnesses quickly.
"The area was extremely busy after the match and there will undoubtedly be many people with information that will assist police.
"I need them to get in touch as detectives work to build a complete picture of what happened on Friday night."
No arrests have been made.
Anyone with information and any witnesses should call 101, ref 7888/19nov, or contact Crimestoppers anonymously on 0800 555 111.