Jason Hughes is a Welsh actor, best known for his role as Sergeant Ben Jones in the ITV television series Midsomer Murders (2005–2013) and for his role as lawyer Warren Jones in the BBC drama This Life (1996–1997). Hughes has also worked extensively in theatre, including in a production of the play Our Country's Good (1999) as Second Lieutenant Ralph Clark. Hughes was born in Port Talbot, Wales, and spent much of his early childhood there with his family. He has Welsh and Italian roots. His grandfather, Raldo Carpini, was the son of an Italian immigrant from Bardi, Emilia-Romagna, who settled in Ammanford. Hughes's great-grandfather was originally trained in railway track laying but eventually went into the ice cream business. Hughes's maternal grandfather was a policeman in Port Talbot. As a teenager, Hughes played rugby and cricket and hoped to make a career in sport, playing county cricket until the age of 18.

He became interested in acting while attending drama classes at his local comprehensive school, and a teacher advised him to apply to the National Youth Theatre of Wales. Hughes was also greatly inspired by the Welsh actor Anthony Hopkins. In 1987, at the National Youth Theatre of Wales, the 16-year-old Hughes met and befriended Michael Sheen, who lived in the same dormitory. They had much in common, as both came to acting from a sporting background and had musical inclinations. Hughes had previously learned to play the guitar and piano. He also met the actors Ruth Jones, Rob Brydon and Hywel Simons; the latter was a school friend of Sheen. Hughes studied drama at the London Academy of Music and Dramatic Art, where he lived in the same house as Sheen and Simons. In 1999 he appeared in a production of Look Back in Anger with Sheen at the National Youth Theatre and in Caligula at the Donmar Theatre.