 Corker signed for Conference National side Cambridge United on 21 March 2012 until the end of the season.On 1 May 2012 it was announced that due to agreement between the player and U's boss Jez George Corker would not be taking up the one-year contract extension offer to remain at the U's for the 2012–13 season and he would be leaving the Abbey Stadium outfit with immediate effect.In September 2012, Corker joined Northern Premier League side Whitby Town.