The showrunner is Chris Chibnall, who also just happens to be taking over from Stephen Moffat as showrunner on Doctor Who when he leaves at the same time as Capaldi.
Doctor Who returns to BBC 1 and BBC America on April 15th.
Talk has been rumbling of Chibnall wanting to hire someone he’s worked with previously as the new Doctor, and Colman certainly fits the bill.
Broadchurch is about to air its third and final season in the U.K., with Tennant and Colman once again reuniting to play D.S. Hardy and D.I. Miller.