Question:  Not Now, Comrade is a 1976 British comedy film directed by Ray Cooney, and featured a number of British comedy actors of the era including which British actor and singer best known as Lofty?

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Peter Ellis (actor): Peter Ellis (born 30 May 1936) is an English actor.  Peter has worked extensively in theatre and television both as an actor and director.He spent four seasons with the RSC.  Three years with the Old Vic Co including playing Benvolio in Zeffirelli's "Romeo and Juliet".  Hotspur in "Henry IV" and later Rosencrantz in a world tour of "Hamlet" starring Derek Jacobi.  He also played Guildenstern in "Hamlet" on the site of the new Globe Theatre.  Five years at the Crucible Sheffield.  In the West End he appeared in "The Tulip Tree" and in Ray Cooney's "Funny Money".  He is perhaps best known for playing the role of Chief Superintendent Charles Brownlow in the long running ITV drama "The Bill".  Has also appeared as a semi-regular in "Emmerdale Farm" and "Coronation Street".  Other series include "Sam" "Lyttons Diary", "Edward and Mrs Simpson", "The XYY Man", "Nolan", "The Les Dawson Show", Victoria Wood's play "Talent" for Granada and "Acorn Antiques" for BBC TV.  He appeared in the David Mercer television play "In Two Minds" (1967), a work which was directed by Ken Loach.

I'm All Right Jack: I'm All Right Jack is a 1959 British comedy film directed and produced by John and Roy Boulting from a script by Frank Harvey, John Boulting and Alan Hackney based on the novel "Private Life" by Hackney.  The film is a sequel to the Boultings' 1956 film "Private's Progress" and Ian Carmichael, Dennis Price, Richard Attenborough, Terry-Thomas and Miles Malleson reprise their characters.  Peter Sellers played one of his best-known roles, as the trades union shop steward Fred Kite and won a Bafta Best Actor Award.  The rest of the cast included many well-known British comedy actors of the time.

The Likely Lads (film): The Likely Lads is a 1976 British comedy film directed by Michael Tuchner, starring James Bolam and Rodney Bewes.  It is a spin-off from "Whatever Happened to the Likely Lads? ", although it shares its title with the earlier 1960s British television series "The Likely Lads", of which "Whatever" was the sequel.

Not Now, Darling (film): Not Now, Darling is a 1973 British comedy film adapted from the play of the same title by John Chapman and Ray Cooney.  The plot is a farce centered on a fur coat shop in central London.  A loosely related sequel "Not Now, Comrade" was released in 1976.

Funny Money (2006 film): Funny Money is a 2006 American comedy film directed by Leslie Greif and starring Chevy Chase, Penelope Ann Miller and Armand Assante.  It is based on the British play "Funny Money" by Ray Cooney.  It was a co-production between Germany, the United States and Romania.  Its plot concerns a couple who accidentally find themselves in possession of a briefcase containing $5 million belonging to the Romanian Mafia.

Doctor in Trouble: Doctor in Trouble is a 1970 British comedy film, the seventh and last film in the "Doctor" series.  It was directed by Ralph Thomas and stars Leslie Phillips as a doctor who gets accidentally trapped on an outgoing cruise ship while it begins a round the world trip.  The cast was rounded out by a number of British comedy actors including James Robertson Justice, Harry Secombe and Angela Scoular.  It was based on the story "Doctor on Toast" by Richard Gordon.

Not Now, Comrade: Not Now, Comrade is a 1976 British comedy film directed by Ray Cooney.  It was a follow-up to the similarly named 1973 farce "Not Now, Darling".  It featured a number of British comedy actors of the era including Leslie Phillips, Windsor Davies, Don Estelle and Ian Lavender.  The film was shot at Elstree studios, and was intended as the second in a series of ‘Not Now’ movies, but box office returns for the film, unlike those of its predecessor, were disappointing.

The Office Party: The Office Party is a 1976 British comedy film directed by David Grant and starring Alan Lake, David Rayner and Chris Gannon.  It depicts the misadventures of staff enjoying an office party.

The Hound of the Baskervilles (1978 film): The Hound of the Baskervilles is a 1978 British comedy film spoofing "The Hound of the Baskervilles" by Sir Arthur Conan Doyle.  It starred Peter Cook as Sherlock Holmes and Dudley Moore as Dr. Watson.  A number of other well-known British comedy actors appeared in the film including Terry-Thomas (in his final screen appearance), Kenneth Williams and Denholm Elliott.

Don Estelle: Don Estelle (22 May 1933 – 2 August 2003) was a British actor and singer best known as Lofty in "It Ain't Half Hot Mum".

Supporting paragraphs: Not Now, Comrade Don Estelle
Answer: Don Estelle