Born in Leeds, West Yorkshire, England, Played youth team football with Y.M.C.A of St Anne's and then he progressed through the youth ranks at Oldham Athletic in the Football League where he eventually went on to make 222 appearances, before leaving in 2002 after ten years at the club.

After his release from Chester McNiven spent time with Morecambe, Fleetwood Town and Guiseley respectively.

McNiven joined Conference National newcomers Farsley Celtic ahead of the 2007–08 season.

In July 2008 Scott joined AFC Fylde on a Free Transfer from Farsley Celtic.

In 2007 whilst he was at Mansfield Town he was diagnosed with testicular cancer, but made a full recovery.