His family own a farm at Todenham in the Cotswolds. He studied agricultural farming at Hartpury College. He played junior rugby with Stow-on-the-Wold, before joining the Gloucester academy. He was called up for the England U18s, although the COVID-19 pandemic forced the games to be cancelled.[2]
Clark captained Gloucester in the Premiership Rugby Cup at the start of the 2023–24 season and later in that competition came off the bench as they defeated Leicester Tigers in the final to lift the trophy.[4][5] Clark had made 19 appearances in total for the club prior to signing for Harlequins on a short-term loan in January 2024.[6] After making one appearance for Quins he returned to Gloucester and started in the 2023–24 EPCR Challenge Cup final at Tottenham Hotspur Stadium which saw them defeated by Sharks to finish runners up.[7] He signed a contract extension with Gloucester in January 2025.[8]
In February 2024 Clark was called-up to train with the England A squad.[11] Later that year in November 2024 he started in a victory over Australia A.[12][13]
