Da Vinci Code author Dan Brown's books are the most donated to secondhand charity bookstores, it has been found.

A survey of Oxfam’s 700 stores found that his books including Angels & Demons and Deception Point were those most likely to be handed in a unwanted reads.

Second place on the donated list went to John Grisham, with Ian Rankin coming in third.

Other authors which people seemingly don't want to keep on their book shelves were Danielle Steel, Stephen King and Catherine Cookson.

However the fact that Jeremy Clarkson wasn't anywhere on the list is a mystery worthy of a Robert Langdon investigation.