Career
Born in Kettering, Waller is a product of the Academy and made his debut in November 2009 against the Ospreys. He scored the controversial winning try in the 2014 Premiership Final as Saints beat Saracens 24–20 in extra time. In January 2014 he was named as an injury replacement in the England Saxons squad for the game against the Ireland Wolfhounds.
The call up marked his first inclusion in any of England"s representative teams.
He made his debut in the match as the Saxons slipped to a 14–8 defeat, and earned a second cap the following week against Scotland A. In May that year, Waller was among a group of 16 players called up after the Premiership Final to join up with the senior England squad for the three Test summer tour of New Zealand. Waller was named on the bench for the non-capped England XV game against the Barbarians on 31 May 2015.