David Richard Bull is an English television presenter, medical doctor, author and politician who has served as Deputy Leader of Reform UK since 2021. He was a Member of the European Parliament for North West England from 2019 to 2020.
Bull studied at St Mary's Hospital Medical School at Imperial College London and worked as a pre-registration and then senior house officer at St Mary's Hospital, Ealing Hospital and Whittington Hospital. He began a career in broadcasting in 1995 and appeared on The Jeremy Vine Show, Watchdog, The Alan Titchmarsh Show, Newsround, Most Haunted Live!, Richard & Judy, Tomorrow's World, This Morning and The Wright Stuff. As well as appearing on British television, he has presented Sugar Dome and appeared on The Rachael Ray Show in the US.
In 2006, Bull was nominated as the Conservative candidate for Brighton Pavilion in the following general election. He stood down in 2009 to head up a Conservative policy review on sexual health and was replaced by Charlotte Vere. He joined the Brexit Party, later Reform UK, in 2019 and was elected as one of their MEPs for North West England at that year's European Parliament election.