The younger brother of former England Under-21 ‘keeper and Tottenham player Ben Alnwick. Jak has featured for the Young Lions previously at U16 and U17 level, and actually started out as a youngster at Sunderland before making the short move across the north-east to St. James Park.
He was then called into the U20 squad by Brian Eastick for the FIFA U20 World Cup in Colombia in July 2011.