Bloomsbury Academic is to stop signing new book projects in politics, international relations and sociology.
The publisher has written to its authors in the field, saying: "We're very proud of the work we've published in these areas since 2008 but have decided to focus our publishing energies on our other existing subjects in the Humanities and Social Sciences."
Politics senior commissioning editor Caroline Wintersgill will depart the company this week. Bloomsbury Academic told authors she had been "a tremendous advocate for your work both in-house and in the wider academic community, and..a strong advocate for our ongoing experiments with Open Access publishing."
All book projects currently under contact "will continue to receive our full care and attention," the publisher assured authors.
Bloomsbury has built up wider strengths in arts and humanities publishing than in the social sciences through recent acquisitions such as Continuum, Berg, Methuen and Fairchild.