Police were called at around 03:40hrs on Saturday, 29 February, to reports of an incident in Wood Street, Kingston.
A 19-year-old-man from Barnes was found at the scene suffering from stab injuries.
Officers administered first aid and the injured man was taken by LAS to a west London hospital where he remains in a critical condition.
His family have been informed.
Four men have been arrested in connection with the incident.
[A] Aged 20, [B] aged 18 and [C] aged 20, have all been arrested on suspicion of attempted murder.
[D] Aged 19, has been arrested on suspicion of affray.
The man [A] was arrested on Saturday, 29 February at an address near the scene and has since been charged with possession of an offensive weapon and possession of points and blades. He will appear in custody at Wimbledon Magistrates’ Court today. (02.03.2020)
The man [B] was arrested on Saturday, 29 February and taken to hospital for treatment to injuries apparently sustained during the incident. Following treatment, he was taken to a west London police station and has since been bailed to return on a date in late March.
The man [C] was arrested on Sunday, 1 March after he surrendered himself to west London police station and he remains in custody.
The man [D] was arrested on suspicion of affray on Saturday, 29 February at a west London hospital, where he was being treated for minor injuries. He has been bailed to a date in late March.
A crime scene remains in place in Wood Street and officers will be on patrol in Kingston town centre throughout the day.
The investigation is being led by detectives from the South West Command Unit.
Sally Benatar, the South West Commander, said: “My thoughts are with the victim of this senseless attack in Kingston Town Centre, and with his family and friends. We are determined to work with our communities and local partners to take weapons off the streets of south west London and to prevent violence in all its forms. Local officers are patrolling in Kingston town centre and I would encourage anyone who has concerns to speak to them or to contact their local policing team. ”
Officers are appealing for anyone who was in the area and witnessed the incident, or who has images or footage of the incident, to contact them.
Any witnesses or anyone with any information is asked to call police on 101 or contact via Twitter @MetCC. Please quote CAD 1255/29Feb.
To give information anonymously contact Crimestoppers on 0800 555 111 or online at crimestoppers-uk.org.
+ Do you know someone who is carrying a knife? If you have information that could help keep your community safe, but don’t want to speak to police, please contact the independent charity Crimestoppers 100% anonymously on 0800 555 111. They do not ask your name and cannot trace your call or I.P address.
Any young people who have information about violence or knife crime, can visit www.fearless.org where they can pass on information anonymously – your I.P address will not be traced. Fearless is part of the Crimestoppers charity, and is independent of the police.