David wrote the screenplay for the 2011 film adaptation , directed by Lone Scherfig and the book has sold over two million copies worldwide .
The 2009 publication of David Nicholls ' One Day heralded another international success .
David Nicholls wrote the screenplay for the 2011 film adaptation , directed by Lone Scherfig and the book has sold over two million copies worldwide .
The 2009 publication of David Nicholls ' One Day heralded another international success .