He subsequently played liberal working-class Lancastrian barrister James Kavanagh in Kavanagh QC (1995–99, and a special in 2001). Thaw also appeared in two sitcoms—Thick as Thieves (London Weekend/ITV, 1974) with Bob Hoskins and Home to Roost (Yorkshire/ITV, 1985–90). Thaw is mainly known in America for the Morse series, as well as the BBC series A Year in Provence (1993) with Lindsay Duncan.