Police in Westminster were called Hyde Park, W2, at approximately 05:50hrs on Friday, 12 August, after a member of the public found a man with injuries.
Officers attended and found a man deceased.
This incident is being treated as suspicious.
No arrests have been made and enquiries are ongoing.
Next of kin have not been informed.
Cordons are currently in place at the venue near the mosaic to commemorate The Reformers’ Tree in Hyde Park.
Detectives from the Homicide and Major Crime Command (HMCC) investigate.
Anyone with information or witnesses are asked to call the police non-emergency line on 101 or Crimestoppers anonymously on 0800 555 111.