Question: We Joined the Navy the actor best known for being in what BBC sitcom?

Context paragraphs:
Iain McKee: Iain McKee is an English actor best known for his role as Frank Gadney in BBC1 drama series Lilies and Michael in BBC sitcom The Visit.  He is originally from Bolton and now lives in North London, UK.

Owen Brenman: Owen Brenman (born 17 December 1956 in London) is an English actor best known for his role as next-door neighbour Nick Swainey in the multi-award-winning BBC sitcom "One Foot in the Grave", which ran for ten years (1990–2000) and was written by David Renwick.  He currently plays Dr. Heston Carter in the BBC drama series "Doctors"

James Beck: Stanley James Carroll Beck (21 February 1929 – 6 August 1973) was an English actor best remembered for his role as Private Walker, the cockney spiv in the popular BBC sitcom "Dad's Army".

John Le Mesurier: John Le Mesurier ( , born John Elton Le Mesurier Halliley; 5 April 191215 November 1983) was an English actor.  He is perhaps best remembered for his comedic role as Sergeant Arthur Wilson in the BBC television situation comedy "Dad's Army" (1968–77).  A self-confessed "jobbing actor", Le Mesurier appeared in more than 120 films across a range of genres, normally in smaller supporting parts.

Felix Bowness: Felix Bowness (30 March 1922 – 13 September 2009) was an English comedy actor best remembered for his portrayal of the jockey Fred Quilley in the BBC sitcom "Hi-de-Hi! ."

We Joined the Navy: We Joined the Navy is a 1962 British comedy film produced by Daniel M. Angel and directed by Wendy Toye which stars Kenneth More, Lloyd Nolan, Joan O'Brien, Derek Fowlds, Graham Crowden, Esma Cannon and John Le Mesurier.  It was based on the novel of the same name by John Winton.

John Clegg (actor): John Walter Lawrence Clegg (born 9 July 1934) is an Indian-born English actor best known for playing the part of 'Mr. La-di-da' Gunner "Paderewski" Graham in the BBC sitcom "It Ain't Half Hot Mum".

Mark Powley: Mark Powley (born 4 October 1963) is a British actor best known for his work on television.  He appeared in 88 episodes of police drama "The Bill" as P.C Melvin (1987–1990), and as builder Tom in BBC sitcom "Next of Kin" for 2 series (1995–1996).

Laura Aikman: Laura Holly Aikman (born 24 December 1985) is an English actress and daughter of stunt coordinator and film director Stuart (known professionally as Stuart St. Paul) and Jean.  She has been appearing in TV and films since childhood.  She is best known for her role in "The Mysti Show" as title character Mysti as well as her role as May Phelps in BBC medical drama "Casualty".  She is now most well known for playing Deputy Headteacher Lorna Hutchinson in BBC's "Waterloo Road".  She is also recently known for playing Captain Ellen Best ATO in the BBC Three series "Bluestone 42".  She also appeared in the BBC sitcom "Josh" in 2016.

Rowan Atkinson: Rowan Sebastian Atkinson, CBE (born 6 January 1955) is an English actor, comedian, and screenwriter best known for his work on the sitcoms "Blackadder" and "Mr. Bean".  Atkinson first came to prominence in the BBC's sketch comedy show "Not the Nine O'Clock News" (1979–82), receiving the 1981 BAFTA for Best Entertainment Performance, and via his participation in The Secret Policeman's Ball from 1979.  His other work includes the 1983 James Bond film "Never Say Never Again", playing a bumbling vicar in "Four Weddings and a Funeral" (1994), voicing the red-billed hornbill Zazu in "The Lion King" (1994), and featuring in the BBC sitcom "The Thin Blue Line" (1995–1996).  His work in theatre includes the 2009 West End revival of the musical "Oliver! ".

Supporting paragraphs: We Joined the Navy John Le Mesurier
Answer: Dad's Army