[3][4][5] On television, his roles have included Ham Peggotty in David Copperfield; guest appearances in Survivors, The Life and Times of David Lloyd George, Rab C. Nesbitt, and Doctor Who, first as an extra in The Enemy of the World (1967–1968), then as a soldier in The War Games (1969), both times alongside his father who played the Second Doctor, and in a considerably larger role as King Peladon in The Curse of Peladon (1972) alongside Jon Pertwee as the Third Doctor; as Sergeant Pritchard in the BBC television sitcom Hi-de-Hi!
[6][7][8][1][9][10] In the television adaptation of Alan Ayckbourn's trilogy The Norman Conquests (1977), Troughton appeared as Tom, the veterinarian.
During 1977/8 he starred as Royal Flying Corps Observer Lieutenant Richard Bravington in two seasons of the television series Wings.
[12][13][14] He appeared in the first episode of the TV adaptation of The Last Detective in which his A Very Peculiar Practice co-star Peter Davison (also ex-Doctor Who) starred.
He toured alongside Alison Steadman in a production of Enjoy by Alan Bennett, playing the role of Dad.
[22] He starred alongside Kevin Spacey in a production of Inherit the Wind by Jerome Lawrence and Robert Edwin Lee at London's Old Vic theatre which ran from 18 September to 20 December 2009.
[26] In November 2013, Troughton appeared in the one-off 50th anniversary comedy homage The Five(ish) Doctors Reboot.
[33][34] Troughton co-starred with Fiona O'Shaughnessy in the romantic horror comedy film Nina Forever (2015).