Question: In what year was the English actor that starred with David Hemmings and Douglas Wilmer in "Unman, Wittering and Zigo" born?

full_context: Document 1: Robert Hardy: Timothy Sydney Robert Hardy, CBE, FSA (29 October 1925 – 3 August 2017) was an English actor who enjoyed a long career in the theatre, film and television.
Document 2: A Little Game: A Little Game is a 1971 ABC Movie of the Week that was first broadcast on October 30, 1971, starring Mark Gruner as a young boy who will do anything to get what he wants. In the movie, the plot suggests that he might be responsible for the death of a fellow student at the military academy he attends, yet his mother (Diane Baker) refuses to believe that he could be guilty of anything. His stepfather (Ed Nelson) begins to wonder if the boy wants to get rid of him. It was based on the 1968 novel of the same name by Fielden Farrington, who also wrote the screenplay. The film was directed by Paul Wendkos, who would film another of Farrington's novels for television the following year ("The Strangers in 7A").
Document 3: Tony Gardner: Dr. Tony Gardner (born 10 January 1964) is an English actor and doctor. He qualified as a doctor at Guy's Hospital in 1987, then as a general practitioner in 1993. He combined medicine and comedy during the 1990s as half of the award-winning comedy duo "Struck Off and Die" with Phil Hammond.
Document 4: David Garrick: David Garrick (19 February 1717 – 20 January 1779) was an English actor, playwright, theatre manager and producer who influenced nearly all aspects of theatrical practice throughout the 18th century, and was a pupil and friend of Dr Samuel Johnson. He appeared in a number of amateur theatricals, and with his appearance in the title role of Shakespeare's "Richard III", audiences and managers began to take notice.
Document 5: Urge to Kill (film): Urge to Kill is a 1960 British B-movie serial killer film, directed by Vernon Sewell and starring Patrick Barr, Ruth Dunning and Terence Knapp. The film is based on the novel "Hughie Roddis" and play "Hand in Glove", both by Gerald Savory. It is regarded as a minor cult film thanks to its unrelenting shabby grimness and some unintentionally comic, dated and politically incorrect dialogue – one suspect is repeatedly referred to as "a mental case", while the police, trying to work out why one hapless victim was selected for her grisly fate, speculate "perhaps she was a Jezebel."
Document 6: The Man Who Haunted Himself: The Man Who Haunted Himself is a 1970 British psychological thriller film written and directed by Basil Dearden (his final film) and starring Roger Moore. It was based on the novel "The Strange Case of Mr Pelham" by Anthony Armstrong.
Document 7: The Man Who Could Not Sleep and Other Mysteries: The Man Who Could Not Sleep and Other Mysteries is a collection of radio plays by the British thriller writer Michael Gilbert, first published in 2011 by the British company Robert Hale and unpublished in the United States. It contains two long, previously uncollected radio plays, as well as synopses of two proposed stage plays that were never subsequently written. It also has an introduction by John Cooper and three appendices. The locales of the plays are mostly in London and its environs. Two of the many recurring characters that Gilbert created over his exceedingly long writing career, Nap Rumbold and Hargest Macrea, are in "The Game Called Justice". As usual with Gilbert, the tone of the stories is civilized and even occasionally light-hearted, but there are always elements of bleakness beneath the urbane surface, particularly in "The Last Chapter". "Michael was an exceptionally fine storyteller, but he's hard to classify," said one of his American publishers after his death. "He's not a hard-boiled writer in the classic sense, but there is a hard edge to him, a feeling within his work that not all of society is rational, that virtue is not always rewarded.". Gilbert, who was appointed CBE in 1980, was a founder-member of the British Crime Writers' Association. The Mystery Writers of America named him a Grand Master in 1988 and in 1990 he was presented Bouchercon's Lifetime Achievement Award.
Document 8: Tom Hollander: Thomas Anthony Hollander (born 25 August 1967) is an English actor. He began his career in theatre, winning the Ian Charleson Award in 1992 for his performance as Witwoud in "The Way of the World" at the Lyric Hammersmith Theatre. He is known for his roles in comedic films such as "Pirates of the Caribbean" and "In the Loop" and drama films such as "Enigma", "Pride & Prejudice", "Gosford Park", and "Hanna". He played the lead role in the sitcom "Rev.", which won the British Academy Television Award for best sitcom in 2011. He also played the lead in the ITV's "Doctor Thorne" and won the BAFTA Television Award for Best Supporting Actor for his role as Major Lance "Corky" Corkoran in the BBC series "The Night Manager".
Document 9: Get Carter: Get Carter is a 1971 British crime film directed by Mike Hodges and starring Michael Caine, Ian Hendry, Britt Ekland, John Osborne and Bryan Mosley. The screenplay was adapted by Hodges from Ted Lewis's 1969 novel "Jack's Return Home". Producer Michael Klinger optioned the book and made a deal for the ailing Metro-Goldwyn-Mayer (MGM) studio to finance and release the film, bringing in Hodges and Caine. Caine became a co-producer of the film. "Get Carter" was Hodges' first feature film as director, as well as being the screen debut of Alun Armstrong. MGM was scaling back its European operations and the film became the last project approved before the American company closed its Borehamwood studios. The film is set in north-east England and was filmed in and around Newcastle upon Tyne, Gateshead and County Durham.
Document 10: Sleuth (1972 film): Sleuth is a 1972 British mystery thriller film directed by Joseph L. Mankiewicz and starring Laurence Olivier and Michael Caine. The screenplay by playwright Anthony Shaffer was based on his 1970 Tony Award-winning play. Both Olivier and Caine were nominated for Academy Awards for their performances. This was Mankiewicz's final film. Critics gave the film overwhelmingly positive reviews, and would later note similarities between it and Caine's 1982 film "Deathtrap".
Document 11: Tony Booth (actor): Anthony George Booth (9 October 1931 – 25 September 2017, later known as Tony and Antony) was an English actor, best known for his role as Mike Rawlins in the BBC series "Till Death Us Do Part", and as the father-in-law of the former Prime Minister, Tony Blair.
Document 12: Nigel Hawthorne: Sir Nigel Barnard Hawthorne, {'1': ", '2': ", '3': 'CBE', '4': "} (5 April 1929 – 26 December 2001) was an English actor. He portrayed Sir Humphrey Appleby, the Permanent Secretary in the 1980s sitcom "Yes Minister" and the Cabinet Secretary in its sequel, "Yes, Prime Minister". For this role, he won four BAFTA TV Awards for Best Light Entertainment Performance. He won the BAFTA Award for Best Actor in a Leading Role and was nominated for the Academy Award for Best Actor for portraying King George III in "The Madness of King George" (1994). He later won the BAFTA TV Award for Best Actor, for the 1996 series "The Fragile Heart". He was also an Olivier Award and Tony Award winner for his work in the theatre.
Document 13: Unman, Wittering and Zigo (film): Unman, Wittering and Zigo is a 1971 British thriller film directed by John Mackenzie and starring David Hemmings, Douglas Wilmer and Tony Haygarth. It is adapted by Simon Raven from Giles Cooper's 1958 radio drama "Unman, Wittering and Zigo". A new teacher arrives at a school and begins to suspect his predecessor was murdered by the pupils, though his suspicions are written off as paranoia. He sets out to prevent the same fate from befalling him.
Document 14: The Wicker Man: The Wicker Man is a 1973 British mystery horror film directed by Robin Hardy. It stars Edward Woodward, Britt Ekland, Diane Cilento, Ingrid Pitt, and Christopher Lee. The screenplay by Anthony Shaffer, inspired by David Pinner's 1967 novel "Ritual", centres on the visit of Police Sergeant Neil Howie to the isolated island of Summerisle, in search of a missing girl. Howie, a devout Christian, is appalled to find that the inhabitants of the island have abandoned Christianity and now practise a form of Celtic paganism. Paul Giovanni composed the film score.
Document 15: Tony Haygarth: George Anthony David Haygarth (4 February 1945 – 10 March 2017) was an English television, film and theatre actor.
ground_truth: 1945