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,
Prince of Wales Hospital has treated 139,975 patients in the Accident and Emergency Department, 158,195 inpatients and day-patients, 766,386 specialist outpatients, and 466,390 general outpatients. Besides subsidised public services, the hospital has been providing private specialist outpatient services and private inpatient services since its opening in 1984 in collaboration with the Faculty of Medicine of CUHK. Charged at market rates, the private services are intended for patients who want to have access to the expertise and facilities of the hospital, which may not be available at private hospitals. Private service income is shared between the Hospital Authority, CUHK, and the departments and the doctors