Mark Ravenhill

Terry Pratchett is the acclaimed creator of the Discworld series, started in 1983 with The Colour of Magic, and which has now reached 37 novels with Unseen Academicals. Worldwide sales of his books are 60 million, and they have been translated into 37 languages. Terry Pratchett was knighted for services to literature in 2009. Visit www.terrypratchett.co.uk for further news and information.

Mark Ravenhill is an Associate at the National Theatre, and author of many plays including the controversial Shopping and F***ing and Mother Clap's Molly House.