Police are appealing for witnesses after two people were stabbed at approximately 10.15pm on Friday near the junction of Tooley Street and Bermondsey Street.
Two male victims were taken by ambulance to separate hospitals.
Southwark Police believe that one victim is in his thirties and the second victim is believed to be in his mid-teens. Neither of their conditions are thought to be life-threatening.
Officers say that the circumstances of the incident are unclear at this stage.
Anyone who can assist police should call Southwark CID on 020 7232 6277.
Nine people have been arrested in connection with the incident.