In 2008 he was signed by the New Zealand Warriors and played in the Toyota Cup, finishing the season as the competition's second highest points scorer.

[6] On 27 June 2010, Locke grabbed his first hat-trick in first grade, bagging three tries as the Warriors defeated the Sydney Roosters 20–18 at AMI Stadium in Christchurch.

In May 2014, Salford Red Devils RLFC of the Super League announced Locke had signed a three-year deal to play for them, beginning in October 2014 ahead of the 2015 season,[11][12] having rejected offers from Union clubs Edinburgh Rugby and Glasgow Warriors.

On 26 June 2015, he signed for then-bottom Super League club Wakefield Trinity Wildcats until the end of the season, pending a visa being granted.

In December 2015, video footage was revealed of Locke being the passenger in a car driven by fellow Wakefield player Tim Smith who had crashed the vehicle into wall of a house.

[15][16] In June 2016 Locke signed a deal with Shute Shield rugby union side Southern Districts & agreed to join the Western Sydney Rams in the NRC, however failed to get accustomed to the code-switch & spent most of the season playing in the lower grades, he was subsequently left out of the NRC squad for the Rams.

[17] He was released and returned to New Zealand to play for the Point Chevalier Pirates in the Fox Memorial Shield mid season, 2016.

Due to the presence of Sam Tomkins at the Warriors in 2014, Locke languished in the Warriors NSW Cup side and as a consequence lost his place in the NZ test team to well performed Manly Sea Eagles utility back Peta Hiku for the 2014 Anzac Test at the Sydney Football Stadium.