Baker has represented England at under-19, under-20 and under-21 level. He made his debut for the under-19 side on 18 November 2008 as they beat Germany 1–0. He made 9 appearances for the under-19's and was part of the England squad at the 2011 under-20 World Cup, playing in all of England's games at the tournament. He made his debut for the under-21 squad in 2011 against Iceland in Preston. His other two caps came in wins against Israel and Norway during 2013 UEFA European Under-21 Football Championship qualification.
