Jacqueline Wilson, Judy Murray and Kate Atkinson are also on the festival's programme.
The line-up has been confirmed, with Bridget Jones creator and Life of Pi author among the stars.
One talk by Arday is "cancelled at the request of the speaker" and others are removed from listings.
Literary events for all ages will take place across the town at the latest WordFest event.
The bestselling author on what new data reveals about America’s steep decline in reading for pleasure.
Cher explains why she has finally written her memoir and who it's for.
Stephen Shames' photography offers a radically new and candid picture of the militant black power organisation.
What happens to our brains when we learn to read Braille?
The African town of Chinguetti is home to a large collection of forgotten ancient books.
As the world goes digital, paper might seem increasingly obsolete – but it is anything but.
