Emergency services were called to a fight in Sevenoaks Way in Orpington at midnight yesterday (August 2).
A man was found at the scene with stab wounds and taken to hospital.
His condition has been confirmed as both non life-threatening and non life-changing.
No arrests have yet been made and investigations are ongoing.
A spokesperson for Metropolitan Police said: “Around 00:00hrs on Saturday, 2 August, officers attended Sevenoaks Way, Orpington, alongside the London Ambulance Service and London’s Air Ambulance following reports of an altercation.
“A man was treated at the scene for stab wounds. He was taken to hospital.
“No arrests have been made at this early stage of the investigation.
“Anybody who witnessed the incident – or who has information – should contact the police on 101, quoting 9031/02AUG.”