He had the ability to play fly half (before Saracens) (although in a rather ad-hoc capacity) and did so to great effect in the 2006 Currie Cup season when perennially injured provincial team-mate Butch James was absent from the squad. However, due to the emergence of Francois Steyn at the coastal franchise, Barritt's opportunity to play fly-half was curtailed, leading to a him finding a more settled role as the Sharks' first-choice inside-centre.
Barritt was selected by England coach Martin Johnson to represent the England Saxons at the 2009 Churchill Cup. This was possible because Barritt had not yet had a senior-level cap for another country, and holds a UK passport, thanks to Rhodesian parents, making him eligible for England as well as South Africa. Barritt's family has strong English roots, and many of his aunts and uncles live in England. Barritt's grandparents were born in England, and his grandfather played Rugby Union for English Universities. Barritt made his Saxons debut against the USA, scoring a try.