John was born in Manchester and began his career with Crewe Alexandra, making his debut in August 1999. First team opportunites were somewhat limited, and he went out on loan to Hyde United. He arrived at Nene Park at the beginning of November 2001 on a one month loan spell as Diamonds were adjusting to life in the Football League. He made just two appearances however before returning. John also went out on loan to Northwich Victoria in February 2002.

He was eventually released by Crewe the following summer after just 11 appearances, and signed a year long contract with Hereford United. The following season he was with Telford United, before moving to Shrewsbury Town in July 2004. In March 2005, he joined Halifax Town and then in July 2006, moved to Aldershot Town where he made his mark as a striker. In his first season, he was voted the fans 'Player of the Season' and in some four seasons, he scored 51 goals in 143 appearances and helped the side to the Conference title in May 2008. He also made appearances for the England C team. Towards the end of his time with the Shots, he joined Oxford United on loan in February 2010 until the end of the season, before being released. He had several trials in the summer of 2010 and was expected to join AFC Wimbledon, but the deal fell through. After training with Conference side Barrow AFC, he joined them on non-contract terms on 18 November 2010.