Sanderson has played for England at the Under-15, 17, 19 and 21 levels. On 3 May 2006, she was called up for the England first team. She hit the crossbar with a shot from 25 yards, shortly after coming off the bench for her debut against Hungary. She was drafted into the squad for the World Cup qualifying play-off against France in September 2006 as a replacement for the injured Jo Potter.