David Nicholls talks to James Naughtie and a group of readers about his enormously successful novel One Day.

The book has now sold over 5 million copies worldwide since its first publication in 2009. It's the will-they-won't they story of Dexter and Emma, who get together on their last day at Edinburgh University in the late 80s, and whom we meet in the novel every July 15th for the next twenty years. It is in turns moving, stylish and funny.

David Nicholls discusses how cinema and tv and his work as an actor influenced the writing of this novel, as well as his love of Hardy and Dickens. Looking back at the novel, having not read it for four years, he is honest about how he might write it differently, if he was allowed.

Presenter : James Naughtie

October's Bookclub choice : Married Love by Tessa Hadley (2012).