Gerald Gary Mercurio is a British television writer, producer, director and novelist. A former hospital doctor and Royal Air Force officer, Mercurio has been ranked among UK television's leading writers. In 2017, Mercurio was awarded a Fellowship of the Royal Television Society and the Baird Medal by RTS Midlands. Mercurio's works for television include the series Line of Duty, Bodyguard, Bodies, The Grimleys, and Cardiac Arrest.