Lee is an English professional rugby union player who plays at scrum-half for Bedford Blues in the RFU Championship. Dickson played 49 times for Newcastle Falcons between 2004–2008 and 256 games for Northampton Saints between 2008–17. He played for the England national side 18 times between 2012–14.

In 2008, Dickson played for England Saxons in the side that defeated Ireland A. He was also called up to the England squad for the 2008 Six Nations Championship.

In 2012, Dickson made his debut for the full national team off the bench in England’s 6 Nations match with Scotland, in which England won 13-6 and retained the Calcutta Cup. Subsequently, the England scrum half played four of the five games on the South African tour in June 2012. His last appearance in the England jersey is when he played against the All Blacks during the 3-test series in summer 2014. Dickson has since earned 18 caps for England.