Oshor Williams played three league games for Exeter City in the late 1970s when on loan from Southampton. He later appeared in nearly 200 league games for Stockport County before finishing his professional career with Port Vale and Preston North End. He later worked for the Professional Footballers’ Association. 

He joined  Middlesbrough as an apprentice in 1974 but when the club didn't offer him a professional contract he accepted the offer to sign for Manchester United in 1976. Released after a year he then played for Billingham Synthonia and Gateshead before returning to the professional ranks with Southampton in 1978. Subsequently, after a handful of reserve games, he was loaned to Exeter City for the start of the 1978-79 season. In his month at Exeter, he made three appearances with his debut being against Brentford on 2 September 1978.

Eventually playing seven league games for Southampton, he moved to Stockport County on a free transfer in September 1979 where he made 193 league appearances scoring 26 goals along the way. Leaving for Port Vale in 1984, where he enjoyed a promotion success, he later played for Preston North End before  retiring from playing but not before enjoying promotion again.

Moving into coaching, as well as the commercial side of the game, he later completed a degree in history and politics and worked for the Professional Footballers' Association offering advice to footballers on qualifications, training and life after football.