The Adventures of James Bond Junior 003½, a novel written by the pseudonymous R. D. Mascott, was later published in 1967 featuring James Bond's nephew; Colonel Sun written by Kingsley Amis under the pseudonym Robert Markham was published in 1968 as the first adult continuation novel following Ian Fleming's The Man with the Golden Gun (1965).
Four draft pages of the manuscript were discovered in 2005, in which we learn that the Double-O Section has been closed down and James Bond defies M on a matter of principle, resigning from MI6 to pursue his mission in South Africa alone.
Jenkins' contract with Glidrose gave him a licence to reuse the material in the novel in the event of its rejection, with the proviso that he could not use any of Fleming's characters.
Jenkins may have done this: his 1973 novel A Cleft of Stars, while not containing any rogue British secret agents, is set in almost precisely the same area of South Africa, involves diamonds and gold, and has the hero temporarily hiding in a baobab tree.
Reportedly he was told that Saltzman had forbidden that any film be made based on Colonel Sun due to Glidrose refusing to publish Per Fine Ounce a decade earlier.
In 2010, previously unreleased extracts from the "lost" Jenkins manuscript Per Fine Ounce were released exclusively on James Bond website MI6.