Holby City cast as Greg Douglas in series twelve. "Holby City" and "Casualty" are both set in Holby City Hospital, in the fictional county of Wyvern, in the southwest of England close to the Welsh border. The city exterior is represented by Bristol, though "Holby City" is filmed at BBC Elstree Centre in Borehamwood, Hertfordshire. The "Casualty" set in Bristol was not large enough to encompass the surgical ward and operating theatre required for "Holby City", and as a result, some crossover scenes in the first episode had to be shot twice, first on the "Casualty" set and then again at Elstree,
Holby City succeeded by Kathleen Hutchison from 2002 to 2004, Richard Stokes from 2004 to 2006, McHale from 2006 to 2010, Belinda Campbell from 2010 to 2011, Johnathan Young from 2011 to 2013, Oliver Kent from 2013 to 2017 and Simon Harper from 2017. Since the show's initial development, it has become a weekly fixture in the schedule. Holby City airs once a week, all year round, and each series now contains 52 episodes. The show follows the lives of medical and ancillary staff at the fictional Holby City Hospital. It began with eleven main characters in its first series, all of