Paul Twite, publishing director of Haymarket's Meeting and Travel Group, will take on additional responsibilities for the Print & Packaging Group from 1 January 2010.
Manning said: "The past 11 years have been an incredible learning experience and developing the PrintWeek and Packaging News brands in the UK and globally has been hugely exciting. However, I have decided that now is the perfect time to expand my horizons even further."
Martin Durham, chairman of Haymarket Business Media, praised Manning's contribution to the phenomenal growth of the Print & Packaging Group.
"Under Wayne's leadership, the print group grew from one magazine to a global portfolio of 13 products through acquisitions, launches and licensed products," he said.
Publishing director Manning to leave Print & Packaging Group
Wayne Manning, publishing director of Haymarket's Print & Packaging Group, will be leaving Haymarket at the end of 2009 after 11 years of service.