William Boyd on his new Bond: 'He is a middle-aged man, a middle-aged spy, and that’s one of the things that interests me. The as-yet-untitled novel is set in 1969, with Bond aged 45. I’m a realistic novelist and what interests me about Bond is the human being. There will be no mountains filled with atom bombs or global plagues, no gadgets, no superpowers or preposterous enemies - there will be an entirely believable psychopath, not a preposterous psychopath. And similarly with love affairs - in my novel they will be entirely believable.'