 They were beaten 2–1 by Croatia U21s on aggregate.On 17 November 2004, Hammell made his full international debut for Scotland under caretaker manager Tommy Burns in a 4–1 friendly defeat to Sweden, coming on as a 54th-minute substitute for Hearts centre-back Andy Webster.In May 2013, after a nine-year absence from international duty, Hammell was drafted in to the Scotland squad for their FIFA World Cup qualifier against Croatia following injury doubts over other full backs.