It has been learned that the head of Rockstar London, Mark Washbrook, resigned earlier this month. Also leaving the company was Mark Lloyd, the head of Rockstar Lincoln.
Mr. Washbrook’s most notable work with Rockstar was 2007 release Manhunt 2. He is also credited on Nintendo’s Batallion Wars as well as Warhammer 40,000: Fire Warrior in a career that spans well over twenty years. He was also at one point the head of Kuju London (currently Headstrong Games). Mr. Lloyd, due to being the head of a QA company, has an extensive list of credits during his time at Rockstar, including major titles such as Red Dead Redemption, Grand Theft Auto IV and Bully. There are no known plans for the two at this time.
Speaking to IGN UK, a Rockstar spokesperson confirmed the departures, while stating that they would have no effect on any current projects. The company is believed to be working on a currently unannounced PS3/360 project based on 2007 job listings brought up by Gamesindustry.biz (reg required).
As of right now, there are no job postings to replace either head. This leads me to believe that the replacements will come internally, though that is purely speculation.