 He struggled for games during the 2009–10 season as manager Paul Buckle went about reshaping his squad mid-season and Sills was deemed surplus to requirements at Plainmoor.He signed for Hertfordshire side Stevenage in January 2010 for an undisclosed fee, playing an important part in the club's end of season run, as Stevenage won promotion to the Football League for the first time in the club's history.Sills was also a PE teacher at both Marriotts School and Poole High School.