One of his biggest successes was landing a leading part in the television show, The Girl From U.N.C.L.E, in the early 1960s.
Though the show was probably his biggest television role, he has continued acting and made his latest TV appearance in 1999.
Noel played the character Jerrold Hicks in this television movie.
The film tells the story of former CIA operative John Tagget, played by Daniel J Travanti, who has flashbacks to his last operation in Vietnam.
Playing the part of a failed British spy, Noel makes two appearances in the film before being murdered by one of his contacts.
The film was only released on video.
In his only known appearance as a cartoon character, Noel played Volarius in the popular children's cartoon based on the legend of King Arthur.
The Young Riders (one episode 1990)
Playing the evil character Deforest Whitcomb, Noel puts in one of his best ever acting performances.
His character is the evil owner of a small western town's saloon and mine.
The story revolves around Whitcomb's corrupt method of forcing people to work in his mine by having them arrested under false charges.
The show is available on DVD. It also starred a young Stephen Baldwin and Josh Brolin.
Gideon Oliver (one episode, 1989)
Only five episodes of this short-lived American detective drama were ever made.
The show starred Louis Gossett JR as professor Gideon Oliver, an anthropology professor at Columbia University who used his knowledge of other cultures to solve crimes.
Noel played a fellow professor at the University, but only appeared in one episode called Tongs. The episode, which covered Chinese gang wars in New York, was released as a stand-alone film in the UK under the title Tongs.
Alfred Hitchcock Presents: Murder in Mind (one episode 1989)
A 1980s remake of a series of classic Hitchcock stories saw Noel star as Charles Blanchard in the episode Murder in Mind.
The story sees a writer imagine how Blanchard is planning to murder his wife. It was broadcast in America on January 28, 1989. The series is not yet available on DVD.
Kate and Allie (one episode 1985)
Noel featured in one episode of the long running comedy, playing the author Owen Ives.
He was Kate and Allie's former English teacher who had written a book about being in love with one of his former students, leading both women to assume they were his inspiration.
The episode is available on DVD.
Hart to Hart (one episode, 1981)
In the episode Murder in Paradise, Noel played a mysterious detective on the hunt for a killer.
Starring in the episode of the long-running show brought him back together with his Girl From U.N.C.L.E co-star Stefanie Powers and It Takes a Thief co-star Robert Wagner.
The episode is available on the DVD box-set for series two of the TV show.
Ironside (one episode, 1972)
Noel played the character Paul Buckler in one episode of the long-running detective show.
He is one of two bored jet-setters who devise a crime 'chess game' in which the final move is murder.
The episode, from season six of the series, was broadcast on November 30, 1972. It is not yet available on DVD.
Noel played Quinn in one episode of the hip, crime-fighting show.
The Name of the Game (one episode 1970)
Noel starred in one episode of this long running American drama. He played the character Steven Talbot, an English scholar and Shakespeare expert investigating the legend of a lost Shakespeare play written in America.
The unusual story, which was first broadcast on February 20, 1970, is not available on DVD.
Mission: Impossible (three episodes 1970)
Noel Harrison features as the character King Nicolai in episodes one, two and three of the story The Falcon.
He stars as a young, clock-obsessed monarch in the only three-part adventure in the history of Mission: Impossible.
The story sees the evil General Ramon Sabattini attempt to steal the throne of an unnamed Eastern European country by murdering King Nicolai and the other heirs to the throne.
The three episodes are available on the DVD box-set for series four of the TV show.
Love American Style (one episode 1969)
Noel starred alongside English actress Judy Carne in one segment of the comedy sketch show Love American Style.
The story, Love and the Burglar, saw Noel's unnamed burglar attempting to rob Carne's broke young woman.
The show is available on DVD.
It Takes a Thief (one episode 1968)
Wagner played suave cat burglar Alexander Mundy, who worked for the U.S. Government.
In the episode A Case of Red Turnips, it was Mundy's job to retrieve Griffin's latest film, which contained footage of a number of secret agents. The episode was broadcast on November 26, 1968.
The show was released on DVD in 2011.
Funny You Should Ask (game show 1968)
A game show from America, hosted by Lloyd Thaxton. In this edition, Noel is confused by contestants for his father, Rex Harrison.
Miss Teen International Pageant (1968)
Miss Teen International Pageant programme in 1968 with Davy Jones from the Monkees and actress Sally Field.
He is pictured here in a publicity picture presenting the award to Alice Alfheim from Norway.
He also hosted Dream Girl of 67 the previous year.
Hollywood Squares (game show 1967-1969)
Between 1967 and 1969, Noel made 12 appearances on the celebrity quiz show alongside the likes of Zsa Zsa Gabor, Maureen O'Hara and William Shatner.
Password (game show 1967)
Noel appeared alongside Hollywood actress Barbara Rush on the May 22, 1967 episode of the long running American television quiz show, Password.
The episode was the last to be broadcast in a prime-time slot.
The Man from U.N.C.L.E. (one episode, 1966)
In the episode, The Galatea Affair, Noel appeared as Mark Slate, the role he also played in The Girl From U.N.C.L.E. The other guest star in the episode was Joan Collins.
All the Man From U.N.C.L.E. episodes are now available on DVD.
For more on The Girl From U.N.C.L.E. go to the show's dedicated page.
Man of the World (One Episode 1962)
Noel made one appearance in the British TV show, Man of the World.
The series followed the adventures of Michael Strait, a freelance photographer and reporter, played by Craig Stevens.
Noel appeared in an episode called The Runaways, which was first shown on October 20, 1962.
He played the character Lord Allwood and the episode includes one of the earliest pieces of film footage available of him singing and playing guitar.
The show is available on DVD from www.networkdvd.net.
Tonight (1958 - 1960)Noel's first big break in television came on the BBC programme Tonight.
In the show, he sung songs based on topical news stories in a calypso style. His appearances on the programme alternated with the West Indian folk singer Cy Grant.
The 40-minute show went out every weekday between 6pm and 7pm until 1965 and was one of the early forerunners of modern, satirical television shows.
He is pictured here in a publicity photograph from the show.
This is just a selection of the television appearances made by Noel, for more go to the Internet Movie Database.