[3][4] Despite impressing selectors as a 17-year-old, Kingston missed out on playing for the Australian Schoolboys side in 2008, following a collarbone injury.

[5] In 2011 he made his debut for the New South Wales Waratahs, and later that year was selected in the Australian Under 20s side to play in the 2011 IRB Junior World Championship in Italy.

[6] He was also selected for the Australian Sevens side in 2011, but had to forgo the opportunity to tour due to his commitments with the Waratahs.

On the back of strong performances, he was named in the media as a potential candidate for the Wallabies but did not gain selection.

[8] In late May 2013, he signed a two-year deal to join the Melbourne Rebels, starting in the 2014 Super Rugby season.