In 2006, Clark formed a group (originally a duo) called, Solid White Line with members, Jake Long and James Brown.

[6] For his portrayal of Ringo, Clark earned a nomination for the Logie Award for Most Popular New Male Talent.

[12] In 2016, Clark made his U.S. television debut as Leo "Craterface" Balmudo in the Fox/Paramount live musical television special Grease: Live, alongside Vanessa Hudgens, Julianne Hough and Aaron Tveit under the direction of Tommy Kail (Hamilton).

[3] This single included the bonus track of "Suddenly", Clark's modern take on the original song by Angry Anderson, which was played in an episode of Neighbours during his character's (Ringo Brown) wedding to Donna Freedman (Margot Robbie).

[12] The following year, he made an appearance at Bents Park as part of the South Tyneside Summer Festival concerts, alongside Matt Cardle and Ryan O'Shaughnessy.