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 Peter's Hospital, Chertsey included the accident & emergency department, the ITU and the orthopaedic unit was opened by Prince Edward in the summer of 1998. The Duchess of Kent Wing was extended to include two further wards in 2006. The hospital radio station, Radio Wey started broadcasting to patients and staff from St. Peters in 1965 and today also serves an area beyond the hospital's main catchment area. St Peter's Hospital is SSW of Chertsey railway station and has regular bus services to a wide range of towns. A free shuttle service is also available for patients, staff and visitors between Ashford Hospital