運動科學
Before becoming a full-time footballer, Sills graduated at Portsmouth University, earning a degree in Sports science, whilst he was also playing part-time football with Basingstoke Town. And, even after graduating, Sills continued to lead his 'double life', playing football for Kingstonian while he was working as a Sports Council development officer. At the age of 24, Sills became a full-time professional footballer, giving up his job as a marketing executive. In February 2009, Sills appeared as a contestant on the game show Wogan's Perfect Recall, finishing as runner-up.