A former junior World Champion, Mitchell burst on to the senior scene as a starter at the 2010 Commonwealth Games, winning a silver medal.

[2] That year, he also won a bronze in the men's team sprint at the World Championships, with Sam Webster and Eddie Dawkins.

[1] In 2014, Mitchell, Webster and Dawkins finally won World Championship gold in the men's team sprint.

[3] At the 2016 Rio Olympics, he won a silver medal alongside Sam Webster and Eddie Dawkins in the team sprint.

[1] At the 2018 Commonwealth Games, Mitchell won Gold in the team sprint event alongside Sam Webster and Eddie Dawkins.