The CCRC said its decision followed a detailed review of what it described as a "complex and difficult case".
It noted the case against Norris, who was jailed for a minimum of 30 years, was "wholly circumstantial" and "heavily reliant on expert opinion evidence".

As a result of new expert evidence, the CCRC said: "There is a real possibility that the Court of Appeal will decide that that Mr Norris's conviction for the murder/attempted murder of one or more of the four patients is unsafe."

If overturned will the NMC examine their decision to strike off following the conviction and if so how long will this take?

Amanda Jenkinson took a further 10 years after her own criminal conviction was overturned to get the NMC to revoke hers.

The damage will have already been done and of course the families involved will again face not having answers to what happened to their relatives. But if he is shown to be innocent what does damage has this also done to this nurse?