The latest James Bond novel is titled Solo and will see the world's most famous fictional spy go on an unauthorized mission at the height of the Cold War, the author of the book said on Monday.

The plot of the book focuses on Africa, but spans Europe and the US, as it reveals a realistic, 45-year-old Bond based on the wealth of biographical detail taken from the Ian Fleming novels, British author William Boyd said.

"Events conspire to make Bond go off on a self-appointed mission of his own, unannounced and without any authorization. And he's fully prepared to take the consequences of his audacity," Boyd said.

"He goes on a real mission to real countries and the world he's in is absolutely 1969. There are no gimmicks, it's a real spy story... there is a very precise reason why I chose that year," Boyd added, declining to comment further.

Solo will be published in Britain on September 26 by Jonathan Cape - Fleming's original publisher - and available from HarperCollins in the US and Canada from October 8.

The screen version of the suave spy remains a box-office superstar, with Skyfall becoming the first official Bond film to take over $1 billion at the box office following its release last year.

Boyd is set to please fans of the original novels, not least as he already has two spy novels under his name, but also because he researched both Bond and his creator meticulously.

"Bond is not just a superhero. He has flaws, he has weaknesses, he makes mistakes... that was Fleming's genius," Boyd said at the London Book Fair.

"I am interested in the man, the human being... I had to invent a villain and various antagonists. I had to come up with two very interesting women for him (Bond) to meet and to have a relationship with. I had to populate that world with creatures of my imagination, not just the ones Fleming had."

Fleming wrote his first Bond novel, Casino Royale 60 years ago in 1953 and penned 13 more before he died 11 years later at the age of 56.

When asked to continue the Bond novel series in 2011, Boyd said he immediately jumped at the opportunity.

"It's tremendous fun, but you have to take it really, really seriously."

Reuters