David joined ExCeL in 2008 as Managing Director and, following the appointment of Kevin Murphy as chairman, was appointed chief executive officer in early 2013.
ExCeL’s executive director of Exhibitions, Jeremy Rees, has been appointed acting CEO with immediate effect.
ExCeL chairman, Kevin Murphy, said: "We are looking forward to another successful year in 2018, especially with the opening of the Elizabeth line, which will connect ExCeL to central London is just 15 minutes. I would like to thank David for his contribution to ExCeL and to wish Jeremy every success in his new role."
Rees will be acting CEO for the next 12 months.