A man spotted with a gun in Creek Road, Greenwich sustained a gunshot injury after been shot by firearms officers.
Police said firearms officers attended the scene and the man was located around at 2.31pm on Friday.
Police said there does not appear to be an ongoing threat to the wider public and no other injuries have been reported.
A Metropolitan Police spokesperson said: “At 14:31hrs on Friday, August 5, police received multiple 999 reports of a man with a firearm in Creek Road.
“Firearms officers attended the scene. The man was located. A police firearm was discharged and the man sustained a gunshot injury.
“London Ambulance Service and the Air Ambulance also attended.
“He was treated at the scene before being taken to hospital. We await an update on his condition.
“No other injuries have been reported.”
“The investigation is in its early stages.
“At present, there does not appear to be an ongoing threat to the wider public.”
The London Ambulance Service sent paramedics, including medics from the London’s Air Ambulance to the scene.
A London’s Air Ambulance Service spokesperson said: “We treated a man at the scene and took him as a priority to a major trauma centre.”
“Our advanced trauma team was dispatched via aircraft by London Ambulance Service at 1447 today to reports of a shooting in the Greenwich area.
“After treatment on scene the patient was transferred by road to a major trauma hospital accompanied by London’s Air Ambulance.”