Name	Known for
Jean Anderson Mrs. Baird, John's mother Mrs. Baird, John's mother See fewer	Solomon and Sheba (1959)
John Barrard Third scientist Third scientist See fewer	We'll Think of Something (1986)
Ian Colin Chief engineer Chief engineer See fewer	The Quatermass Experiment (1953)
Allan Cuthbertson Capt. George O'Hara Capt. George O'Hara See fewer	The Guns of Navarone (1961)
Kenneth Edwards First scientist First scientist See fewer	The Venusian (1954)
John Gill Mr. Twigg Mr. Twigg See fewer	Doctor Who (1963)
Michael Gwynn John Logie Baird John Logie Baird See fewer	Jason and the Argonauts (1963)
Mark Heath Coloured assistant Coloured assistant See fewer	Operation Thunderbolt (1977)
Andrew Irvine John Logie Baird, as a boy John Logie Baird, as a boy See fewer	Saturday Playhouse (1958)
Glenda Jackson Iris Jones Iris Jones See fewer	Women in Love (1969)
Edward Jewesbury Second scientist Second scientist See fewer	Richard III (1995)
Stratford Johns Engineer Engineer See fewer	Cromwell (1970)
Clive Marshall William Taynton William Taynton See fewer	The Wild Duck (1983)
Beaufoy Milton Bearded scientist Bearded scientist See fewer	Mutiny on the Elsinore (1937)
Leslie Phillips Guy 'Mephy' Robertson Guy 'Mephy' Robertson See fewer	Venus (I) (2006)
Robin Ranson Guy 'Mephy' Robertson - as a boy Guy 'Mephy' Robertson - as a boy See fewer	BBC Sunday-Night Theatre (1950)
John Salew Will Day Will Day See fewer	Time Flies (1944)
Ewen Solon Sydney Moseley Sydney Moseley See fewer	The Hound of the Baskervilles (1959)
Gwen Watford Mrs. John Logie Baird Mrs. John Logie Baird See fewer	Cleopatra (1963)