In 2006, Gidley travelled to Papua New Guinea to play for the Prime Minister's XIII against the Kumuls. Gidley had a productive season in 2007. He scored multiple times for the Newcastle Knights as well as having done well at converting goals. He scored 15 points against the South Sydney Rabbitohs in their round 5 clash including 2 tries 3/4 goals and a field goal. He has also represented NSW in 2007 State of Origin. In the final round of the 2007 season, with scores level at 24–24, he kicked a penalty goal 12 seconds before full-time to give the Knights a 26–24 victory over the Wests Tigers (who needed to win to book a finals spot), which also ended a 7 match losing streak and allowed Newcastle to avoid the wooden spoon.