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,
St. Luke's General Hospital St. Luke's General Hospital St. Luke's General Hospital, Kilkenny (also known as "Carlow/Kilkenny General Hospital" and "Kilkenny District Hospital") (Irish: "Ospidéal Ginearálta Naomh Lúcás, Cill Chainnigh") is a public hospital located in Kilkenny, Ireland. Founded in 1942, it is managed by the Irish Government's Health Service Executive and provides acute hospital services, including a 24-hour emergency department, for the population of County Kilkenny, County Carlow, and part of County Tipperary. In 2008, the hospital served 51,804 out-patients, 15,957 in-patients, and 9,260 day cases, with an average stay of 5.2 nights. In 2007, there were 33,590 accident and emergency department presentations.