 He made his debut on 15 September 2018 in a 2–0 home win against Ipswich Town when he came on as an 87th-minute substitute for Fraizer Campbell.Martin's performances for Norwich in the 2006–07 season saw him win a place in the England Under-19 squad, in which he scored a debut goal in a 1–0 victory over Turkey on 21 March 2007.He featured in England's 2007 UEFA European Under-19 Championship elite qualification campaign making his competitive début against Russia in May 2007.