A man was found unconscious suffering head injuries in Croydon town centre last night.
Police were called shortly before 6pm after the 38-year-old was found lying opposite Barclays bank in North End, at the junction with George Street.
The man was taken to a south London hospital by London Ambulance Service where he remains.
His injuries are not thought to be life threatening or life changing.
At this early stage of the investigation, officers believe the man had been assaulted and are appealing for witnesses.
No arrests have been made and detectives from Croydon CID are investigating.
Did you see what happened? Email email@example.com
Anyone who witnessed the incident or has any information is asked to contact detectives on 101 or via Twitter @MetCC