 In early 1964, David Warburton of Roberts & Vinter, an established publisher, heard from the printer of Science Fantasy and New Worlds that the magazines were going to fold shortly. Warburton decided that having a respectable magazine would help him in getting good distribution for Roberts & Vinter's books: Science Fantasy and New Worlds both had distribution arrangements with the two main British newsagents of the time, John Menzies and W.H. Smith. Carnell did not want to continue to edit the magazines in addition to New Writings in SF, and recommended Moorcock to Warburton; Kyril Bonfiglioli, an Oxford art dealer who was a friend of Brian Aldiss, also expressed an interest. Warburton gave Moorcock the choice of which magazine to edit; Moorcock chose New Worlds, and Bonfiglioli became the new editor of Science Fantasy. Roberts & Vinter changed the format from digest to paperback, and the first issue under Bonfiglioli's control was number 65, dated June – July 1964. The schedule was initially somewhat irregular, with each issue dated with two months even when two issues were only a month apart — for example, June – July 1964 was followed by July – August 1964. From March 1965 a regular monthly schedule was begun.
