The publishing firm Geoffrey Bles, led by its founder of the same name, was recognised as a publisher which published selectively and successfully within defined areas of interest. These included detective fiction, fine arts, foreign translations, and religion and theology. The firm published the work of Australian crime novelist 'Margot Neville'.

Geoffrey Bles had a good eye for previously unpublished authors, and from 1940 published the religious writing of C. S. Lewis. Lewis was encouraged to write and publish books for children, including the 'Narnia' series, which was an outstanding commercial success for Bles.

The company was acquired by William Collins, Sons and Company in 1953 and Bles retired in 1954. The Geoffrey Bles imprint continued until at least 1974.