John le Carré, real name David Cornwell, is arguably the most prominent spy novelist in British history. He has a number of classics to his name – including The Spy Who Came in from the Cold, A Perfect Spy, and Tinker Tailor Soldier Spy. 

Now le Carré’s son Nick Harkaway has ranked his father’s top five best books to mark the release of his own novel, Karla’s Choice – featuring George Smiley.