2005 he also played Sgt. Clive Harvey, side-kick to the title character of the ITV detective show Jericho. He appeared in an episode of Agatha Christie's Poirot in 1993 ("The Yellow Iris"), and in two separate episodes of Midsomer Murders, in 1998 and 2007, playing two separate characters. 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. Troughton appeared in the TV film All the King's Men, playing King George V. He appeared in the 2008 series of Doctor Who as Professor Hobbes, in the episode "Midnight". He has also performed in a Big Finish Doctor Who audio production titled Cuddlesome where he plays the Tinghus. He also played the Black Guardian in two audios: The Destroyer of Delights and The Chaos Pool. Finally, he returned as King Peladon in The Prisoner of Peladon audio, and in 2011 in The Crimes of Thomas Brewster. He will reprise the role in 2022’s Peladon audio collection. In 2011, it was announced that David Troughton would be taking on his father's role as the Second Doctor in two audio plays, also featuring Tom Baker as the Fourth Doctor. He has also performed regularly as a notable villain in the BBC series New Tricks. In the same year he appeared (uncredited) in the US remake of The Girl with the Dragon Tattoo alongside Daniel Craig. He toured alongside Alison Steadman in a production of Enjoy by Alan Bennett, playing the role of Dad. 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. In 2011, he appeared as Stan Astill in the Sky1 comedy series The Café. In 2012, he guest starred in an episode of Holby City as a character named Ritchie Mooney. Although they did not appear in the same episode, his real-life son Sam Troughton appeared five weeks later as his character's son Nick Mooney. In November 2013, Troughton appeared in the one-off 50th anniversary comedy homage The Five(ish) Doctors Reboot. In January 2014, he took on the role of Tony Archer, from Colin Skipp who, for 46 years, had played the part in the BBC radio series The Archers. In November that year, fiction caught up with reality