A fresh plea for information has been made over an unprovoked attack in Doncaster which left a man needing brain surgery.
The 27-year-old victim was with friends on High Street when he was knocked unconscious causing a fracture to the skull and bleeding to the brain.
South Yorkshire Police said as a result of surgery the man had been left with a 10in scar on his head.
The attack happened on 7 August. Witnesses should contact police.