I can tell you why it would always be Oldchurch... Oldchurch is the area's Neurological unit, so if you have someone with a major head injury, they would be taken there. Consequently they are more likely to have brain dead patients. It's one of those things that can make a hospital look bad - speciality units which have a high death rate can drag down a hospitals rating. Of course, I dislike Oldchurch for a much better reason - they can make an ambulance look after a patient for 8 hours before accepting a handover - something I'll be posting about shortly.