Science Fantasy, - British fantasy and science fiction magazine

Science Fantasy, which also appeared under the titles Impulse and SF Impulse, was a British fantasy and science fiction magazine, launched in 1950 by Nova Publications as a companion to Nova's New Worlds. Walter Gillings was editor for the first two issues, and was then replaced by John Carnell, the editor of New Worlds, as a cost-saving measure. Carnell edited both magazines until Nova went out of business in early 1964. The titles were acquired by Roberts & Vinter, who hired Kyril Bonfiglioli to edit Science Fantasy; Bonfiglioli changed the title to Impulse in early 1966, but the new title led to confusion with the distributors and sales fell, though the magazine remained profitable. The title was changed again to SF Impulse for the last few issues. Science Fantasy ceased publication the following year, when Roberts & Vinter came under financial pressure after their printer went bankrupt.

Gillings had an inventory of material that he had acquired while editing Fantasy, and he drew on this for Science Fantasy, as well as incorporating his own fanzine, Science Fantasy Review, into the new magazine. Once Carnell took over, Science Fantasy typically ran a long lead novelette along with several shorter stories; prominent contributors in the 1950s included John Brunner, Ken Bulmer, and Brian Aldiss, whose first novel Nonstop appeared (in an early version) in the February 1956 issue. Fantasy stories began to appear more frequently during the latter half of the 1950s, and in the early 1960s Carnell began to publish Thomas Burnett Swann's well-received historical fantasies. Carnell felt that the literary quality of Science Fantasy was always higher than that of New Worlds, and in the early 1960s his efforts were rewarded with three consecutive Hugo nominations for best magazine. Under Bonfiglioli more new writers appeared, including Keith Roberts, Brian Stableford and Josephine Saxton. In the opinion of science fiction historian Mike Ashley, the final year of Impulse, as it was titled by that time, included some of the best material ever published in a British science fiction magazine.