Police said they shot the man after they were called for reports of action movie on free.
Residents heard shots out after the police confronted the suspect on bridge in Creek Road, Greenwich, 2:30 p.m. on Friday.
Pictures show silver car surrounded by police as a man lies in a pool of blood is treated for gunshot wound.
Police said they received several 911 calls after locals spotted the man. with firearms.
Specialists in firearms arrived at the scene. found suspect.
Scotland Yard said the officers opened fire with their weapons and the man was wounded.
His injuries are not considered life-threatening.
Gary Clark who lived on neighboring estate for more three decades, said: “I just heard gun fired, I heard a bang from my bedroom.
“Four minutes later I heard air ambulance, police called up. My daughter walked over there and she said “Someone got shot on bridge’.
“She was very shocked and a little overwhelmed. up. You don’t expect someone to do this in broad daylight – it’s pretty shocking.”
Gemma Daly, 31, from Whitstable but stayed in Greenwich said she heard some screams and then big explosion,” which she thought was a gunshot.
She said she immediately heard police sirens, adding that emergency services then began to arrive.
“The police served a man on in side of bridge,” she said, adding that he was “obviously injured.”
“They are removed his clothes,” she said, describing how “a lot of of people”Worked on man before he was imprisoned on stretcher.
Ms Daly said the police “started to bypass” the silver car, which was still on bridge.
A spokesman for Scotland Yard said: “He was treated on the spot before being taken to the hospital.
“No other injuries have been reported. Significant cordons in place. We ask members of in public to avoid in area.
“While the investigation is going on in in the early stages, this incident is not considered terror connected or that there is a constant threat to the wider public”.
A spokesman for the London Ambulance Service said: “We sent the number of resources including ambulance crew, advanced paramedic, motorcycle paramedic, medic in a fast response car and Incident Response Officer, and we also sent medics from the London air ambulance.
“We assisted the man at the scene and took him as a priority to a major trauma center.”
Directorate of Professional Standards Supervisory Body Informed of shooting.