A 50% year-on-year increase in digital sales at Cambridge University Press contributed to a 3.8% overall sales increase (to £245m) for the year to end April 2012, the publisher has reported.
The Press achieved an operating surplus for the year of £3.4m.
Chief executive Peter Phillips said: "The Press is engaged in a wide-ranging process of transformation to make sure we can deliver outstanding scholarship and learning materials globally in an increasingly digital environment. That takes time and investment. But the year to April 2012 shows that we have made a good start."
For the first time, academic materials delivered digitally exceeded 30% of CUP's output, with sales of its digital products up 50% year on year, CUP said. New publications with accompanying e-books, interactive digital books, apps, companion websites, and Touchstone—the digital and blended English-language course—has "continued its high growth with new adoptions by major institutions on several continents", according to the publisher.
Cambridge Books Online, CUP's digital platform for academic books, also saw "another significant increase in sales" over the year. CUP said it was "already reaping benefits" in terms of shared resources and decision-making from the reorganisation of its global publishing into three main groups: Academic, Education and Cambridge English.