Mark Jones (22 April 1939 – 14 January 2010) was an English actor, who appeared frequently in various films and television series.Credits include: A Family at War, Z-Cars, Van der Valk, Doctor Who (in the serial The Seeds of Doom), The New Avengers, The Onedin Line, Target, Secret Army, Tales of the Unexpected, Buccaneer, Blott on the Landscape, Casualty, Call Me Mister and Dempsey and Makepeace.He also appeared in the films Tell Me Lies (1968), Connecting Rooms (1970), Under Milk Wood (1972), Layout for 5 Models (1972), Keep It Up, Jack (1973, title role), The Sexplorer (1975), Secrets of a Superstud (1976), The Medusa Touch (1978), Can I Come Too? (1979), Bear Island (1979), Don't Open till Christmas (1984), and the Star Wars saga film The Empire Strikes Back (1980).