A prolific writer, Bulmer penned over 160 novels and numerous short stories, both under his real name and various pseudonyms.

Bulmer's works are popular in translation, particularly in Germany, to the extent that in some cases they have been published only in German editions, with the original English-language versions remaining unpublished.

[2] Paul Grist's comics series Jack Staff acknowledges this in the real name of its character The Claw, Ben Kulmer.

Bulmer was also active in science fiction fandom, including travelling to the United States in 1955 as the TransAtlantic Fan Fund (TAFF) delegate.

Bulmer's pseudonyms include Alan Burt Akers, Frank Brandon, Rupert Clinton, Ernest Corley, Peter Green, Adam Hardy, Philip Kent, Bruno Krauss, Karl Maras, Manning Norvil, Chesman Scot, Nelson Sherwood, Richard Silver, H. Philip Stratford and Tully Zetford.