In 2010, he appeared on the small screen in The Tudors as the doomed Francis Dereham, former lover of Catherine Howard. Leech also appeared in ITV 2010s television series Downton Abbey as chauffeur Tom Branson, whose twin beliefs in socialism and Irish Republicanism clash with those of the British upper class.
In 2010, he made a brief appearance on television in The Tudors as the ill-fated Francis Dereham, former paramour of Catherine Howard. Leech also appeared in the ITV series Downton Abbey in 2010 as chauffeur Tom Branson, whose radical views on socialism and Irish nationalism conflict with those of the British aristocracy.