Apologies for the intrusion into this thread but I have a little bit of experience of how sudden unexpected deaths in Scotland are dealt with. After the paramedics attended and the PF was satisfied it was a natural sudden death, the body would have been placed into a bodybag and conveyed directly to the police mortuary (probably Dundee) by the on-call undertaker. It would have been booked in and the first detailed examination - which could have been hours or days later - would have been by the pathologist who gave evidence at the trial. It wouldn't have gone to a hospital and no doctors or other medical staff would have seen it.
The big issue here is around how the paramedics, police and PF all decided at the scene that the death was a natural one!