Question: In what year was the English poet, writer, and broadcaster who described himself in "Who's Who" as a "poet and hack", and had a poem included in the 1956 book "Noblesse Oblige: An Enquiry Into the Identifiable Characteristics of the English Aristocracy", appointed Poet Laureate of the United Kingdom?

Context paragraphs:
Bruce Isaacson: Bruce Isaacson (born 1956) is an American poet and publisher.  He was appointed the first poet laureate of Clark County, Nevada, a community of more than two million people where Las Vegas is located, June 1, 2015 He initiated the Poets of National Stature series there, which includes readings by Juan Felipe Hererra, the sitting Poet Laureate of the United States and Beat Legend Michael McClure.  Other poets Isaacson brought previously to Las Vegas include beat feminist icon Diane di Prima, San Francisco Poet Laureate Jack Hirshman and others.

United States Poet Laureate: The Poet Laureate Consultant in Poetry to the Library of Congress—commonly referred to as the United States Poet Laureate—serves as the official poet of the United States.  During their term, the Poet Laureate seeks to raise the national consciousness to a greater appreciation of the reading and writing of poetry.  The position was modeled on the Poet Laureate of the United Kingdom.  Begun in 1937, and formerly known as the Consultant in Poetry to the Library of Congress, the present title was devised and authorized by an Act of Congress in 1985.  The Poet Laureate's office is administered by the Center for the Book.

Noblesse Oblige (book): Noblesse Oblige: An Enquiry Into the Identifiable Characteristics of the English Aristocracy (1956) is a book that purports to be edited by Nancy Mitford, illustrated by Osbert Lancaster, caricaturist of English manners, and published by Hamish Hamilton.  The anthology comprises four brief essays by Nancy Mitford, Alan S. C. Ross, “Strix” and Christopher Sykes, a letter by Evelyn Waugh, and a poem by John Betjeman.

Stephen Spender: Sir Stephen Harold Spender CBE (28 February 1909 – 16 July 1995) was an English poet, novelist, and essayist who concentrated on themes of social injustice and the class struggle in his work.  He was appointed Poet Laureate Consultant in Poetry to the United States Library of Congress in 1965.

List of U.S. states' Poets Laureate: Many of the states in the United States have established the post of poet laureate to which a prominent poet residing in the respective state is appointed.  The responsibilities of the state poets laureate are similar to those of the Poet Laureate of the United Kingdom and the equivalent Poet Laureate Consultant in Poetry to the Library of Congress in the United States, to make public appearances at poetry readings or literary events, and to promote awareness of poetry within their geographical region.

John Betjeman: Sir John Betjeman, CBE ( ; 28 August 190619 May 1984) was an English poet, writer, and broadcaster who described himself in "Who's Who" as a "poet and hack".  He was Poet Laureate of the United Kingdom from 1972 until his death.

Henry James Pye: Henry James Pye ( ; 10 February 1744 – 11 August 1813) was an English poet, and Poet Laureate from 1790 until his death.  He was the first poet laureate to receive a fixed salary of £27 instead of the historic tierce of Canary wine (though it was still a fairly nominal payment; then as now the Poet Laureate had to look to extra sales generated by the prestige of the office to make significant money from the Laureateship).

Thomas Shadwell: Thomas Shadwell (c. 1642 – 19 November 1692) was an English poet and playwright who was appointed poet laureate in 1689.

Alfred Austin: Alfred Austin DL (30 May 1835 – 2 June 1913) was an English poet who was appointed Poet Laureate in 1896, after an interval following the death of Tennyson, when the other candidates had either caused controversy or refused the honour.  It was claimed that he was being rewarded for his support for the Conservative leader Lord Salisbury in the General Election of 1895.  Austin’s poems are little-remembered today, his most popular work being prose idylls celebrating nature.

Marilyn Taylor: Marilyn L. Taylor (born October 2, 1939) is an American poet with six published collections of poems.  Taylor's poems have also appeared in a number of anthologies and journals, including "Able Muse, Measure, The American Scholar", "Smartish Pace", "The Formalist, Poetry", and "Poetry"' s 90th Anniversary Anthology.  Her second full-length collection, "Subject to Change" (David Robert Books, 2004), was nominated for the Poets' Prize.  She served as the city of Milwaukee's Poet Laureate in 2004 and 2005, and was appointed Poet Laureate of the state of Wisconsin for 2009 and 2010.  She also served for five years as a contributing editor for "The Writer" Magazine.  A retired Adjunct Assistant Professor at the University of Wisconsin–Milwaukee, she taught poetry and poetics for the Department of English and later for the Honors College.  She currently lives in Madison, Wisconsin, where she presents readings and facilitates workshops throughout Wisconsin and beyond.

Supporting paragraphs: Noblesse Oblige (book) John Betjeman
Answer: 1972