At junior level, Scott played for the England Under-19s side, scoring three times in three games as England won through the first round of qualifying for the 2006 UEFA Under-19s tournament. Her first call-up to the England senior squad came in May 2006, having captained the Under-19s side for the previous 18 months. She made her debut for the England senior team against the Netherlands in August 2006, coming on as a late substitute for Kelly Smith in a 4–0 win. She made the squad for the 2007 World Cup, coming on as a substitute in England's opening match against Japan. She went on to start the remainder of England's matches in the tournament, scoring her first international goal in the 6–1 demolition of Argentina in the group stage. England bowed out at the quarter-final stage after a 3–0 defeat against the United States.