A teenager was hospitalised after being found stabbed on Rye Lane on Tuesday night.
Police say the young man, believed to be in his late teens, was found at 8.14pm after reports of a stabbing. His condition is not believed to be life-threatening.
No arrests have been made and officers say they are still working to establish how he came to be injured.
The Met appealed for anyone with information to call police on 101, or Crimestoppers anonymously on 0800 555 111.