 It is more likely that the real reason was that the US edition of "F&SF" was by then easily available in the UK, and that circulation was falling.Atlas also published an Australian edition, which was identical to the British edition except that it was dated two months later; the issues ran from November 1963 to February 1966.A little over ten years after the first US edition ceased, a new version appeared, again as a companion to "F&SF".