Ronald Leigh-Hunt trained for acting at the Italia Conti School. He made his debut in regional repertory theatre. In films from 1950, he was rarely out of work, usually cast in subtle authoritarian or aristocratic roles. Cultured and dapper, latterly white-haired, he was particularly noted for his resonant voice .
Considered for Sir Percy and the Pathologist in Lifeforce.
Acted in both The Avengers and The New Avengers.