In his place comes Marc who returned to the Trinity Mirror Midlands business in a publisher role last year after a spell pursuing other projects.
It completes a notable comeback for an editor who initially quit TM when the Post went from daily to weekly in 2009.
Marc left along with the then Birmingham Mail editor Steve Dyson, with David, then editor of the Coventry Telegraph taking over as editor-in-chief of all three titles.
Now it appears the tables have turned with Marc succeeding David in the editor-in-chief role.
Simon Edgley, managing director, Trinity Mirror Midlands, said: “David has made a significant contribution to our titles and the business over many years, including very successful tenures editing the Coventry Telegraph, the Sunday Mercury and of course the Birmingham Mail.
“He has led the editorial team through some very challenging times, and is in very large part responsible for making our newsrooms the multi-media pioneers they are today. His hard work and leadership leaves the business well prepared to hand over and I am looking forward to working with Marc in his new role.”
Added David: “The last few years have seen tumultuous change in the way we produce and publish content and I am incredibly indebted to the talented journalists in the newsroom who have worked tirelessly to achieve fantastic digital growth.
“I will miss the buzz of the newsroom but I have had the privilege of working with some truly amazing journalists over the years.”
Since leaving TM, Marc he has run his own public affairs consultancy and helped set up TheBusinessDesk.com’s West Midlands operation.
He returned to the company as publishing director, Midlands in July 2013.