John Nettleton (born 5 February 1929) is an English actor best known for playing Sir Arnold Robinson, Cabinet Secretary in Yes Minister (1980–84) and President of the Campaign for Freedom of Information in the follow-up Yes, Prime Minister (1985–88). Another political role for Nettleton was a Conservative Party Member of Parliament (Sir Stephen Baxter) in the sitcom The New Statesman. A veteran actor with a career spanning many decades, Nettleton is easily at home playing troubled or flawed aristocratic gentlemen or can be seen amongst a comic ensemble.
Other TV roles included a Ministry of Defence department chief in The Avengers (episode “The See-Through Man“, 1967), a police sergeant in Please Sir! (1969), Froggett in the office comedy series If It Moves File It (1970), Francis Bacon in Elizabeth R (1971), a Detective Superintendent in Doctor at Large in 1971, Upstairs, Downstairs (1972), The Country Wife (1977), Brideshead Revisited (1981), The Flame Trees of Thika (1981), The Citadel (1983), Martin Luther, Heretic (1983), Brass (1983), East of Ipswich (1987), Reverend Ernest Matthews in the Doctor Who serial Ghost Light (1989), Longitude (2000), Midsomer Murders (2005) and Kingdom (2008).
On stage, he has appeared in the Lyttelton Theatre of the National Theatre in the 2006 productions of Harley Granville Barker’s The Voysey Inheritance, directed by Peter Gill. He also voices Grandpa in the PC Game The Scruffs.
He is married to the actress Deidre Doone.