J.K. Rowling is the author of the much-loved series of seven Harry Potter novels, originally published between 1997 and 2007. Along with the three companion books written for charity, the series has sold over 500 million copies, been translated into over 80 languages, and made into eight blockbuster films.

Originally written by J.K. Rowling in aid of Comic Relief as a Hogwarts textbook, Fantastic Beasts and Where to Find Them became the inspiration behind a new and original five-film series for Warner Bros., the first of which was released in 2016. The second film in the series, Fantastic Beasts: The Crimes of Grindelwald, was released in November 2018.

J.K. Rowling has collaborated with playwright Jack Thorne and director John Tiffany on a stage play, Harry Potter and the Cursed Child, which opened in London's West End in 2016 and on Broadway in 2018, and will have further worldwide openings in 2019.

J.K. Rowling also writes the Cormoran Strike crime novels, under the pseudonym Robert Galbraith. The fourth in this series was published in autumn 2018. The Strike books have been adapted for television for BBC and HBO television by Brontë Film & Television. J.K. Rowling is also the author of The Casual Vacancy, a standalone novel for adults, published in 2012.

John Tiffany directed Once, for which he was the recipient of multiple awards both in the West End and on Broadway. As Associate Director of the Royal Court, his work includes The Twits, Hope and The Pass. He was the director of Let the Right One In for the National Theatre of Scotland, which transferred to the Royal Court, West End and St Ann's Warehouse. His other work for the National Theatre of Scotland includes Macbeth (also Broadway), Enquirer, The Missing, Peter Pan, The House of Bernarda Alba, Transform Caithness: Hunter, Be Near Me, Nobody Will Ever Forgive Us, The Bacchae, Black Watch, for which he won the Olivier and Critics' Circle Best Director Awards, Elizabeth Gordon Quinn and Home: Glasgow. Other recent credits include The Glass Menagerie at ART and on Broadway and The Ambassador at BAM. Tiffany was Associate Director of the National Theatre of Scotland from 2005 to 2012, and was a Radcliffe Fellow at Harvard University in the 2010-2011 academic year.