Morris made his international debut for the England U17 team on 5 February 2016, in a 1–1 draw with Portugal. He scored his first international goal in a 2–0 win over France on 9 May 2016. He was part of the England under-17 side the competed at the 2016 UEFA European Under-17 Championship, coming off the bench in a 1–0 loss to Spain in the quarter-final of the tournament.