The 24-year-old told Hello! Magazine he was concentrating on a novel while his fiancée, Emma Noble, is away playing a model desperate for fame in a touring production of Ben Elton's play Popcorn.
He told the magazine he is working five to six hours a day on the book, which he says has a groundbreaking plot.
He said: "I think I've got a unique idea for my novel and, though there are said to be only five plots in fiction, may I dare joke that I've found a sixth."
![[ image: width=150]](/olmedia/260000/images/_263315_john_and_norma_major150.jpg)
His father, John Major, is currently writing his memoirs, which many hope will lift the lid on the Thatcher years and his own six-and-a-half year term as prime minister.
But it is his mother Norma that has blazed a literary trail, writing books on the prime minister's country retreat Chequers and the actress Joan Sutherland.
Margaret Thatcher's journalist daughter Carol had her own stab at being an author - writing a biography of her father Denis.
Meanwhile, James told the magazine his "greatest ambition" was to start a family when he and Emma, 27, get married in June.
The couple met last year when she was working as a model and game show hostess and he was a manager at the Café Royal in London.
John Major's son to marry
(26 Jan 99 | UK)