ITV director of drama Steve November is set to leave the broadcaster after 16 years.
The news is the latest in a string of high-profile departures announced by the broadcaster, following head of factual Richard Klein and director of entertainment and comedy Elaine Bedell.
November, who was appointed to his current position in April 2013, oversaw the likes of Downton Abbey and Broadchurch, as well as forthcoming series such as Brief Encounters and Cold Feet.
November said, "It has been an honour and a privilege to be involved with ITV drama for 16 years and to have worked with so many great people, from runners to writers, through such exciting times for drama.
“ITV is going through a period of change, which affords me the perfect opportunity to move on to new adventures. I wish ITV drama every success in the future."
Prior to joining the ITV commissioning team, November produced soaps Emmerdale and Coronation Street.
ITV director of television, Kevin Lygo, who is set to unveil a new commissioning team at ITV, said, "I'd like to thank Steve for all his work as director of drama and particularly for the raft of upcoming dramas on ITV which look as strong as ever.
“His contribution to the success of ITV over many years has been huge and I wish him all the best for the future.”