
Hay-on-Wye, or Hay, is a market town and community in Powys, Wales, in the historic county of Brecknockshire. With over twenty bookshops, it is often described as a "town of books"; it is both the National Book Town of Wales and the site of the annual Hay Festival. The community had a population of 1,675 at the 2021 census.

Joanne Michèle Sylvie Harris is a British author, best known for her 1999 novel Chocolat, which was adapted into a film of the same name.

The Baillie Gifford Prize for Non-Fiction, formerly the Samuel Johnson Prize, is an annual British book prize for the best non-fiction writing in the English language. It was founded in 1999 following the demise of the NCR Book Award. With its motto "All the best stories are true", the prize covers current affairs, history, politics, science, sport, travel, biography, autobiography and the arts. The competition is open to authors of any nationality whose work is published in the UK in English. The longlist, shortlist and winner is chosen by a panel of independent judges, which changes every year. Formerly named after English author and lexicographer Samuel Johnson, the award was renamed in 2015 after Baillie Gifford, an investment management firm and the primary sponsor. Since 2016, the annual dinner and awards ceremony has been sponsored by the Blavatnik Family Foundation.
Craig Edward Moncrieff Brown is an English critic and satirist, best known for parliamentary sketch writing, humorous articles and parodies for newspapers and magazines including The Times, the Daily Mail and Private Eye.

The Edinburgh International Book Festival (EIBF) is a book festival that takes place during two weeks in August every year in the centre of Edinburgh, Scotland. Described as The largest festival of its kind in the world, the festival hosts a series of cultural and political talks and debates, along with a well-established children's events programme.

Anna Funder is an Australian author. She is the author of Stasiland, All That I Am, Wifedom: Mrs Orwell’s Invisible Life and the novella The Girl With the Dogs.

Philippe Joseph Sands, KC Hon FBA is a British and French writer and lawyer at 11 King's Bench Walk and Professor of Laws and Director of the Centre on International Courts and Tribunals at University College London. A specialist in international law, he appears as counsel and advocate before many international courts and tribunals, including the International Court of Justice, the International Tribunal for the Law of the Sea, the European Court of Justice, the European Court of Human Rights and the International Criminal Court.

Sheikh Nahyan bin Mubarak Al Nahyan is an Emirati royal and politician, who currently serves as the minister of tolerance of the United Arab Emirates. Al Nahyan previously served as the minister of culture and the minister of higher education.

Hallie Rubenhold is an American-born British historian and author. Her work specializes in 18th and 19th century social history and women's history. Her 2019 book The Five, about the lives of the women murdered by Jack the Ripper, was shortlisted for the Wolfson History Prize and won the Baillie Gifford Prize for Non-fiction. Rubenhold's focus on the victims of murder, rather than on the identity or the acts of the perpetrator, has been credited with changing attitudes to the proper commemoration of such crimes and to the appeal and function of the true crime genre.

Benedict Richard Pierce Macintyre is a British author, reviewer and columnist for The Times newspaper. His columns range from current affairs to historical controversies.

Margo Lillian Jefferson is an American writer and academic.

Peter Kenrick Florence CBE is a British festival director, most notable for founding the Hay Festival with his father and mother, Norman Florence and Rhoda Lewis, funding the first festival with winnings from a poker game.
Baillie Gifford & Co is an investment management firm which is wholly owned by partners, all of whom work within the firm. It was founded in Edinburgh, Scotland, in 1908 and still has its headquarters in the city. It has corporate offices in New York and London.

Richard George William Pitt Booth was a British bookseller, bibliophile and micronationalist known for his contribution to the success of Hay-on-Wye as a centre for second-hand bookselling and founder of The Kingdom of Hay-on-Wye, a micronation that claims the town as an independent kingdom.
Kate Summerscale is an English writer and journalist. She is best known for the bestselling narrative nonfiction books The Suspicions of Mr Whicher, which was made into a television drama, The Wicked Boy and The Haunting of Alma Fielding. She has won a number of literary prizes, including the Samuel Johnson Prize for Nonfiction in 2008.
Sarah Bartlett Churchwell is a professor of American Literature and Public Understanding of the Humanities at the School of Advanced Study, University of London, UK. Her expertise is in 20th- and 21st-century American literature and cultural history, especially the 1920s and 1930s. She has appeared on British television and radio and has been a judge for the Booker Prize, the Baillie Gifford Prize, the Women's Prize for Fiction, and the David Cohen Prize for Literature. She is the director of the Being Human festival and the author of three books: The Many Lives of Marilyn Monroe; Careless People: Murder, Mayhem and the Invention of The Great Gatsby; and Behold America: A History of America First and the American Dream. In April 2021, she was long listed for the Orwell Prize for Journalism.

Sultan Ahmed Al Jaber, is an Emirati politician who is the minister of industry and advanced technology of the United Arab Emirates, head of the Abu Dhabi National Oil Company (ADNOC), and chairman of Masdar.

Katherine Rundell is an English author and academic. She is the author of Impossible Creatures, named Waterstones Book of the Year for 2023. She is also the author of Rooftoppers, which in 2015 won both the overall Waterstones Children's Book Prize and the Blue Peter Book Award for Best Story, and was shortlisted for the Carnegie Medal. She is a Fellow of All Souls College, Oxford and has appeared as an expert guest on BBC Radio 4 programmes including Start the Week, Poetry Please, Seriously.... and Private Passions.

Sudhir Hazareesingh, GCSK, is a British-Mauritian historian. He has been a fellow and Tutor in Politics at Balliol College, Oxford since 1990. Most of his work relates to modern political history from 1850; including the history of contemporary France as well as Napoleon, the Republic and Charles de Gaulle.

Cristina Fuentes La Roche OBE is International Director at Hay Festival, which she has worked at since 2005. She has been involved in creating and directing these festivals in areas including Colombia, Spain, Mexico, Ukraine, Lebanon, and Perú.