The editorial director of the north east regional division of Trinity Mirror Paul Robertson is to leave after 22 years working for the publisher.

In a statement Robertson, who was also editor of the Newscastle Evening Chronicle, said he was after a “fresh challenge”.

Having project managed the recent change in the Chronicle publishing schedule, I think it’s now the right time for me to seek a fresh challenge. The team in the north east is outstanding and I would like to thank them all for their support. I will miss the place but most of all the people I have worked with, many of whom are friends as well as colleagues. I wish everyone at ncjMedia and GMC the best of luck and success for the future.

According to Trinity Mirror, under Robertson’s editorship many new platforms and campaigns have been created, such as Your Health, Community Champions and the Great Family Read. He was also “centrally involved in driving the multimedia agenda, overseeing the launch of ChronicleLive”, a release added.