Claim: Kenneth Bulmer was the editor of the French New Writings in SF 26 (1955) which had 190 pages.
Evidence: New Writings in SF 26 United Kingdom English 
New Writings in SF was a series of thirty British science fiction original anthologies published from 1964 to 1977 under the successive editorships of John Carnell from 1964 to 1972 (the last volume with the aid of Diane Lloyd) and Kenneth Bulmer from 1973 to 1977.