British Transport Police are appealing for witnesses after a woman was assaulted and knocked unconscious by a man in the subway tunnel at Swindon rail station.

Officers are urging anyone with information about the incident which took place at 10.30pm on Saturday, May 8, to come forward.

After the incident a 43-year-old man from Swindon was arrested, and has been released on police bail until June 8.

Detective constable Richard Day said the incident began when the offender attacked a man in the subway underpass at Swindon rail station. He said: “The victim sustained cuts and bruises to his face. The offender then turned on two women, who were trying to walk past, and set upon them in a completely unprovoked attack.”

Both women were punched in the face, with one, a 33-year-old from Swindon, being left unconscious and requiring emergency medical treatment.

DC Day added: “This was a completely unacceptable and violent incident, and I would urge anyone who witnessed it to come forward.”

Anyone with any information is asked to contact British Transport Police on 0800 405040, quoting incident number 577 of 08/05/2010, or Crimestoppers anonymously on 0800 555111.