Searxng/Ian Katz Celebrity Channel 4's longest-serving content chief, Ian Katz, steps down after nine years. His departure follows new CEO Priya Dogra's arrival, marking a major leader... April 16, 2026 AceShowbiz - Ian Katz, the long-serving chief content officer at Channel 4, is set to step down from his position at the end of October after nine years in the role. This tenure makes him the longest-serving content chief in the history of the UK broadcaster. Ian Katz previously held the role of editor at BBC Newsnight before joining Channel 4.