Those comments are based on concerns that were raised about the automated system for DNA testing. Several of the scientists in the labs were raising concerns that the automated process was not detecting DNA, whereas the manual extraction process was.
One would expect that if concerns are raised by the scientists and technicians in the labs, a quality management system should have a structured approach to clearly identify a potential problem, ascertain whether that truly is a problem, and then work to resolve the issue.
We actually gave a case study of one police investigator who brought in a piece of clothing, which I think had a hundred stains on it. The automated process didn't pick it up. The police officer didn't accept that, asked that it be retested, and it was with the manual extraction.... But of course there were long delays.
These concerns were being raised for quite a while. They were never reported through the quality management system. It didn't follow that kind of rigorous processing. After the fact, I think a year later, they did start to discover some of the causes of this. It shows that the system wasn't being applied as it should have been. The problem was that there could have been DNA in some of these samples that wasn't being detected.
That might be a question to ask them: what have they done about this.
I think they have written to some of the crown prosecutors and police forces to ask if they want retesting done. In a couple of cases, that has been requested.