Karen Ardiff is a Dublin-based actress who has performed on every major stage in Ireland. Her first play, In Skagway, was produced by Guna Nua Theatre Company and the Civic Theatre Dublin under the title The Goddess of Liberty. It won the Irish Playwrights and Screenwriters Guild Best New Play Award, the Stewart Parker/BBC Northern Ireland Award and was nominated for the Susan Smith Blackburn Prize. Karen is also the author of an acclaimed novel, The Secret of my Face.

Aristophanes (born c. 447 BC) was a comic playwright of ancient Athens. His surviving works belong to a genre of comic drama known as Old Comedy, and are some of the most influential comedies ever written.

Aristotle (born 384 BC) was a philosopher, pupil of Plato and author of numerous works including his Poetics, one of the most influential tracts in world theatre.

Gareth Armstrong has worked extensively as an actor in regional theatre, the West End and the RSC and was a founding director of the 'Made in Wales' stage company and of the Sherman Theatre, Cardiff. He often works for radio and has had no fewer than three stints as an actor in The Archers.

Siobhan Arnatsiaq-Murphy has performed traditional Inuit drum dance and has worked as a choreographer for over twenty years. She studied ballet and was in the aboriginal modern dance core at the Banff Centre for the Arts with the Aboriginal Dance Project. In her choreography work, Siobhan melds traditional drum dancing with modern dance. She is a graduate of the University of Victoria where she earned her law degree in 2005. She has worked as a lawyer and also taught drum dancing to youth and children. Siobhan lives in Iqaluit.

Arnold Aronson is a professor of theatre at the Columbia University School of the Arts. He frequently writes about scenography and contemporary theatre, and his books include The History and Theory of Environmental Scenography, American Set Design, American Avant-Garde Theatre: A History, Looking into the Abyss: Essays on Scenography, The Disappearing Stage: Reflections on the 2011 Prague Quadrennial and Ming Cho Lee: A Life in Design, as well as the introductory essay for volume three of The Cambridge History of American Theatre. He served as general commissioner of the Prague Quadrennial in 2007.

Ben Ashenden is an actor, writer and comedian. He is half of the comedy double-act, The Pin, with Alex Owen, with whom he has made four series for BBC Radio 4, winner of the BBC Radio Award for Best Comedy. They have also created an original programme for Audible, The Special Relationship, and an animated series for BBC 3, Oi, Leonardo!

Their play, The Comeback, premiered at the Noël Coward Theatre in London's West End in 2020.

Zawe Ashton is a writer, director and actor.

Her writing and directing credits include short films Lighthouse, The Place We Go To Hide and Happy Toys as well as a short documentary on the artist Lorraine O'Grady that formed part of the Soul of A Nation: Art in the Age of Black Power exhibition at Tate Modern.

Writing credits include: Farrago UK Poetry Slam! Champion (2000), Dream Factor (National Youth Theatre Schools Tour), Have a Butchers, Sweetness and Light (DryWrite), Edible Flowers (DryWrite at Latitude Festival), Girls Aloud (Clean Break Theatre). Zawe's first play Harm's Way was shortlisted for the 2007 Verity Bargate Award and was premiered in 2008 as part of the National Youth Theatre's new writing season at The Lowry, Salford.

Damien Atkins is an actor and playwright who was born in Australia and grew up in Edmonton. As author and performer, his work includes the solo shows miss chatelaine, Real Live Girl, and We Are Not Alone, as well as the full-length plays Good Mother, Lucy, and The Mill, Part Four: Ash.

He has been playwright-in-residence at the Canadian Stage Company, Factory Theatre, Crow's Theatre, and at the University of British Columbia. He is the recipient of four Dora Mavor Moore Awards and six additional nominations for acting and writing. Damien is a member of the Theatrefront Ensemble and a former guest instructor at the National Theatre School. He makes his home in Toronto.

Eileen Atkins is an English actress and occasional screenwriter. She has worked in the theatre, film, and television consistently since 1953. In 2008, she won the BAFTA TV Award for Best Actress and the Emmy Award for Outstanding Supporting Actress in a Miniseries or Movie for Cranford. She is also a three-time Olivier Award winner, winning Best Supporting Performance in 1988 (for multiple roles) and Best Actress for The Unexpected Man (1999) and Honour (2004). She was appointed Commander of the Order of the British Empire (CBE) in 1990 and Dame Commander of the Order of the British Empire (DBE) in 2001.