[1] Clark was born in Bridgend to a Welsh mother and English father.
[2] Clark made his league debut for Bath on 17 October 2015, in a win over Exeter Chiefs, having previously played in the Anglo-Welsh Cup.
[4] Ahead of the 2022–23 United Rugby Championship, Clark joined Welsh club Dragons RFC.
[2] Clark played for the England Under-20 side that finished runners up to New Zealand in the final of the 2015 Junior World Cup, scoring the opening try of the game.
[7] Clark turned down an approach from Wales to be a member of their 2017 summer tour.