A man has been left seriously injured after falling 15-feet off Westminster Bridge in central London.
The victim plummeted from the bridge onto a concrete walkway below while trying to take a photo, witnesses said.
An air ambulance was scrambled to Parliament Square, metres away from the Houses of Parliament, and paramedics rushed to the scene.
They treated the injured man for serious head injuries before delivering him to a nearby major trauma centre.
The incident happened at around 12:00pm on Tuesday.
A police and RNLI boat also attended the scene.
Peter Heaton-Jones, a Conservative MP, posted a picture of the air ambulance from his office in nearby Portcullis House.
The vehicle took off at around 1pm, 1 hour after the original incident happened.
A London Ambulance Service spokesman said in a statement: “We were called at 12.03pm to an incident at Westminster Bridge involving a man falling approximately 15 feet onto concrete near the Houses of Parliament.
“We sent a number of resources including an ambulance crew, our hazardous area response team, an advanced paramedic in a car and London’s Air Ambulance.
“We treated the man at the scene for a serious head injury and took him by road ambulance to a major trauma centre”
A spokeswoman for the Metropolitan Police also said: “Police were called at 12:07hrs on Tuesday, 3 May to reports of a man having fallen from Westminster Bridge onto concrete steps close to Speaker's Green.
“London's Air Ambulance attended.
“The man was taken by ambulance to a central London hospital with a head injury.
“The incident is not being treated as suspicious.”