Penguin Random House is marking its fifth anniversary since the merger that formed the publisher in 2013. Its global c.e.o. Markus Dohle discusses its achievements, and its plans for the future.

Five years on from the merger, how would you say things stand with Penguin Random House? What would you pick out as having gone particularly successfully? And what has your biggest challenge been when bringing the two companies together?

Five years into the merger, Penguin Random House is in an even better place than I would have ever imagined on 1st July 2013. The merger has been an extraordinary...