A far superior version to the remake.
The security guard at the hospital is played by Lennard Pearce who played "Grandad" in Only Fools and Horses. When he died suddenly in 1984 he was replaced on the sitcom by Buster Merryfield who also features in this series as pathologist Sir Miles Honeyman.
Natalie Ogle (Nurse Dakers) would go on to play a character named Esmee Dalgliesh in an episode of Poirot.