Holby fictional hospital within the city in which "Casualty" and "Holby City" are set. It is based on the Bristol Royal Infirmary which the original script writers spent time observing in the 1980s in order to garner ideas for "Casualty". Although both shows are set in the same hospital, "Casualty" is primarily filmed in Cardiff, whilst "Holby City" is filmed in Hertfordshire at BBC Elstree Centre. The indoor shots for the first series of "Casualty" were filmed at BBC Television Centre in London. The exterior shots of the hospital used in "Casualty" were formerly filmed at the City of Bristol College;
General Hospital (UK TV series) episodes 1, 2, 3*, 4, 6*, 7*, 8*, 9*, 10*, 11*, 12*, 13*, 15*, 16*, 17*, 18*, 19*, 21*, 22*, 23*, 24*, 25*, 26*, 29, 32, 100, 126, 231, 232, 233, 234, 235, 236, 237, 238, 239, 240, 258 (episodes marked with a "*" were made in colour but now only survive in Black and White). A second volume containing the first prime time series was due for release in April 2013 but did not appear. General Hospital (UK TV series) General Hospital is a British daytime soap opera produced by ATV that ran on ITV from 1972 to 1979.