Question: Who won a more prestigious prize, Hugh MacDiarmid or Harold Pinter?
Context: Works of Harold Pinter provides a list of Harold Pinter's stage and television plays; awards and nominations for plays; radio plays; screenplays for films; awards and nominations for screenwriting; dramatic sketches; prose fiction; collected poetry; and awards for poetry.  It augments a section of the main article on this author. The PEN Pinter Prize and the Pinter International Writer of Courage Award both comprise an annual literary award launched in 2009 by English PEN in honour of the late Nobel Literature Prize-winning playwright Harold Pinter, who had been a Vice President of English PEN and an active member of the International PEN Writers in Prison Committee (WiPC).  The award is given to "a British writer or a writer resident in Britain of outstanding literary merit who, in the words of Pinter’s Nobel speech ['Art, Truth and Politics'], casts an 'unflinching, unswerving' gaze upon the world and shows 'a fierce, intellectual determination … to define the real truth of our lives and our societies'."  The Prize is shared with an "International Writer of Courage," defined as "someone who has been persecuted for speaking out about [his or her] beliefs," selected by English PEN's Writers at Risk Committee in consultation with the annual Prize winner, and announced during an award ceremony held at the British Library, on or around 10 October, the anniversary of Pinter's birth. Characteristics of Harold Pinter's work identifies distinctive aspects of the works of the British playwright Harold Pinter (1930–2008) and gives an indication of their influence on Anglo-American culture. Christopher Murray Grieve (11 August 1892 – 9 September 1978), known by his pen name Hugh MacDiarmid ( ), was a Scottish poet, journalist, essayist and political figure.  He is best known for his works written in 'synthetic Scots', a literary version of the Scots language that MacDiarmid himself developed.  However, Grieve's earliest work -- such as "Annals of the Five Senses" was written in English, and from the early 1930s onwards much of the poetry published under MacDiarmid's name was written in an English that was supplemented to varying degrees by scientific and technical vocabularies. Harold Pinter ( ; 10 October 1930 – 24 December 2008) was a Nobel Prize-winning English playwright, screenwriter, director and actor.  One of the most influential modern British dramatists, his writing career spanned more than 50 years.  His best-known plays include "The Birthday Party" (1957), "The Homecoming" (1964), and "Betrayal" (1978), each of which he adapted for the screen.  His screenplay adaptations of others' works include "The Servant" (1963), "The Go-Between" (1971), "The French Lieutenant's Woman" (1981), "The Trial" (1993), and "Sleuth" (2007).  He also directed or acted in radio, stage, television, and film productions of his own and others' works. Bibliography for Harold Pinter is a list of selected published primary works, productions, secondary sources, and other resources related to English playwright Harold Pinter (1930–2008), the 2005 Nobel Laureate in Literature, who was also a screenwriter, actor, director, poet, author, and political activist.  It lists works by and works about him, and it serves as the Bibliography ("Works cited") for the main article on Harold Pinter and for several articles relating to him and his works. The Harold Pinter Archive in the British Library is the literary archive of Harold Pinter, which Pinter had first placed "on permanent loan" in the British Library in September 1993 and which became a permanent acquisition in December 2007. Langrishe, Go Down, the novel by Aidan Higgins (1966), was adapted for the screen by Harold Pinter, directed by David Jones, filmed for BBC Television in association with Raidió Teilifís Éireann, and first broadcast in September 1978 as a 90-minute BBC2's "Play of the Week".  On 17 July, 2002, "Langrishe, Go Down" was re-released as a theatrical 16mm feature film, after being shown in The Spaces Between the Words: A Tribute to Harold Pinter, by the Film Society of Lincoln Center, as part of the Harold Pinter Festival of the Lincoln Center Festival 2001, held at Lincoln Center for the Performing Arts, in New York City, from 21 July – 31 July 2001. Professor Duncan Munro Glen (11 January 1933 – 20 September 2008) was a Scottish poet, literary editor and Emeritus Professor of Visual Communication at Nottingham Trent University.  He became known to the literary world through his first full-length book, "Hugh MacDiarmid and the Scottish Renaissance".  He published many collections of poetry, from "Kythings and other poems" (1969), "In Appearances" (1971) and "Realities Poems" (1980) to "Selected Poems 1965–1990" (1991), "Selected New Poems 1987–1996" (1998) and "Collected Poems 1965–2005" (2006).  His "Autobiography of a Poet" was published by Ramsay Head Press in 1986.  He edited "Akros" magazine through 51 numbers from August 1965 and did much to promote Scottish poets and artists.  He was a friend and early champion of Hugh MacDiarmid and Ian Hamilton Finlay among others, and produced several volumes of poetry, some of which was translated into Italian. The Dreaming Child is a screenplay by Harold Pinter (1930–2008), the 2005 Nobel Laureate in Literature, which he completed in 1997 and published in volume 3 of his "Collected Screenplays" (2000).  It has not yet been filmed.  It is an adaptation of the short story "The Dreaming Child" by Danish author Karen Blixen (aka Isak Dinesen).  Pinter's manuscripts for this work are housed in The Harold Pinter Archive in the British Library.
Answer: Harold Pinter