Question: Yes, Uncle! is a musical comedy that starred an Australian stage, screen and television actor best remembered for his performance as who in "Peter Pan"?

Context articles: Return to Never Land
Cyril Ritchard
Sebastian Elmaloglou
Peter Pan (1950 musical)
List of works based on Peter Pan
J. M. Barrie
Peter Pan (1976 musical)
Yes, Uncle!
Kevin Colson
Wayne Jarratt

Return to Never Land (also known as Peter Pan 2 or Peter Pan In: Return to Never Land) is a 2002 American animated musical fantasy-adventure film produced by Walt Disney Television Animation, and released by Walt Disney Pictures and distributed by Walt Disney Studios Motion Pictures.
 The film is a sequel to Walt Disney Feature Animation 1953 film "Peter Pan", It is based on J. M. Barrie's novel "Peter and Wendy", and had a worldwide gross of $109 million.
Cyril Ritchard (1 December 1898 – 18 December 1977) was an Australian stage, screen and television actor, and director.
 He is probably best remembered today for his performance as Captain Hook in the Mary Martin musical production of "Peter Pan".
 In 1945, he played Gabriele Eisenstein in "Gay Rosalinda" at the Palace theatre in London, a version of Strauss's "Die Fledermaus" by Erich Wolfgang Korngold in which he appeared with Peter Graves.
 The show was conducted by Richard Tauber and ran for almost a year.
Sebastian Elmaloglou (born 29 September 1989) is an Australian stage, film and television actor best known for portraying the role of Max Sutherland on the long-running Australian soap opera "Home and Away" from 2002 to 2004.
Peter Pan is a 1950 musical adaptation of J. M. Barrie's play "Peter Pan, or The Boy Who Wouldn't Grow Up" with music and lyrics by Leonard Bernstein; it opened on Broadway on April 24, 1950.
 This version starred Jean Arthur as Peter Pan, Boris Karloff in the dual roles of George Darling and Captain Hook, and Marcia Henderson as Wendy.
 The show was orchestrated by Hershy Kay and conducted by Benjamin Steinberg.
 The show ran for 321 performances, closing on January 27, 1951.
Peter Pan, his fellow characters, and the setting of Neverland have appeared in many works since the original books and play by J. M. Barrie.
 The earliest were the stage productions of the play, and an adaptation to silent film, done with Barrie's involvement and personal approval.
 Later works were authorised by Great Ormond Street Hospital, to which Barrie gave the rights to the Peter Pan works; these include adaptations of the main story in both animated and live-action films, musical stage productions, and a sequel novel.
 In addition, there have been numerous uses of Barrie's characters, settings, and storylines which challenged or took advantage of the changing copyright status of these elements, including reinterpretations, sequels, prequels, and spin-offs in a variety of media, including film, television series, and books.
Sir James Matthew Barrie, 1st Baronet, {'1': ", '2': ", '3': ", '4': "} ( ; 9 May 1860 19 June 1937) was a Scottish novelist and playwright, best remembered today as the creator of Peter Pan.
 He was born and educated in Scotland but moved to London, where he wrote a number of successful novels and plays.
 There he met the Llewelyn Davies boys, who inspired him to write about a baby boy who has magical adventures in Kensington Gardens (included in "The Little White Bird"), then to write "Peter Pan, or The Boy Who Wouldn't Grow Up", a "fairy play" about an ageless boy and an ordinary girl named Wendy who have adventures in the fantasy setting of Neverland.
Peter Pan is a 1976 musical adaptation of J. M. Barrie's "Peter Pan, or the Boy Who Wouldn't Grow Up", produced for television as part of the "Hallmark Hall of Fame", starring Mia Farrow as Peter Pan and Danny Kaye as Captain Hook, and with Sir John Gielgud narrating.
 Julie Andrews sang one of the songs, "Once Upon a Bedtime", off-camera over the opening credits.
 It aired on NBC at 7:30pm on Sunday, December 12, 1976, capping off the program's 25th year on the air.
 The program did not use the score written for the highly successful Mary Martin version which had previously been televised many times on NBC.
 Instead, it featured 14 new and now forgotten songs, written for the production by Anthony Newley and Leslie Bricusse.
 The story was adapted by Andrew Birkin (who would subsequently become a leading Barrie scholar) and Jack Burns.
 Although it was an American production with two American stars, most of the cast was British.
Yes, Uncle!
 is a musical comedy by Austen Hurgen and George Arthurs, with music by Nat D. Ayer and lyrics by Clifford Grey (who also wrote "The Bing Boys are Here" and the following series of highly successful reviews).
 The story is based on the farce "Le truc du Brésilien" by Nicolas Nancey and Paul Armont, and the musical takes its title from the catch-phrase used by Bobby Summers and Mabel Mannering, addressing Uncle Brabazon Hollybone.
 It was produced by George Grossmith, Jr. and Edward Laurillard and opened at the Prince of Wales Theatre in London on 16 December 1917 and ran for a very successful 626 performances.
 The piece starred Fred Leslie as G.B. Stark, Margaret Bannerman as Joan and Leslie Henson as Bobby Summers.
 Later, Madge Elliott and Cyril Ritchard starred in the musical.
Kevin Colson (born 28 August 1937) is an Australian stage, film and television actor best known for his portrayal of Sir George Dillingham in the musical "Aspects of Love", for which he received a Tony nomination, and his early role as Cliff in the original London production of "Cabaret" opposite Judi Dench.
 He was a television presenter and stage actor in Sydney before moving to London.
 He left acting for 16 years from 1969, but returned to the stage in 1985.
Wayne Jarratt (19 April 1957 – 14 May 1988) was an Australian stage and television actor in the 1980s, remembered for his role of friendly prison officer Steve Fawkner in the soap opera "Prisoner".
 He played the part for about seventy episodes between 1981 and 1982, but opted to leave the series to take a stage role.