WATCH this CCTV video to help South Yorkshire police find the man who knocks out his victim with just one punch.
The 35-year-old suffered a broken jaw and head injuries after falling backwards and banging his head on the floor.
He underwent surgery and was detained for several days in hospital but he is now recovering from his ordeal at home.
Detectives today released CCTV footage in attempt to trace the attacker who struck outside Doncaster railway station.
The victim, a local man, had approached the station entrance near the Frenchgate Centre and was crossing the station car park when he was struck.
A man, who had been walking close to him, turned and punched him in the face.
Det Con Ian Grice, the officer investigating the incident, said the area was busy at the time - around 5.45pm - and he hopes people who saw the attack, or know who is responsible, will help police find the attacker.
It happened on Thursday, December 29.
DC Grice said: “This was a violent unprovoked assault on a man who was simply walking to the station to catch a train home.
“As the footage shows the station car park and surrounding area was very busy at this time of the assault and I’d appeal for anyone who may have witnessed this nasty incident or who may know who is responsible to come forward and help police with their investigation.
“The victim fell to the floor and banged his head. He was taken to hospital by ambulance suffering from a fractured jaw and head injuries.
“He remained in hospital for a few days while he underwent surgery before returning home to recover from his ordeal.”
The attacker is described as white, around 6ft, with short dark hair. He was wearing a blue jacket and blue denim jeans.
He was also carrying a black and white JD Sports drawstring bag over his shoulder.
* Anyone with information should contact British Transport Police on 0800 405040, quoting background log B2, of 16 January 2012. Information can also be passed to the independent charity Crimestoppers, anonymously, on 0800 555 111.