If it's all so confidential then why is JD being so forceful and open with his theory?
Also, whistle-blowing is a thing nowadays for any officers who have concerns about the way things were done back in the 80s.
Personally, I don't think the police are covering up a murder, of course not. I do think the police cover up their own failures though, as do most institutions when errors have occurred albeit unintentional and without malice.
JD has now retired. He can comment on the case, but he will choose his words carefully as he is aware of what is in the public domain and what is not. To maintain the integrity of the investigation, the confidentiality of witnesses and dignity of SJL, the vast majority of the information/evidence will stay under wraps for when/if there is ever a Crown Court trial.
Whistleblowing is a thing. There is a significant Employment Tribunal taking place involving Greater Manchester Police and whistleblowing at present.
The two alleged gang leaders have never faced justice - the senior detective turned whistleblower who was in charge of the investigation blames his bosses in evidence provided to an employment tribunal
www.manchestereveningnews.co.uk
Where police corruption has always been a problem is with investigations into serious organised crime. It has long been a strategy of OCG's to set up/compromise/identify weaknesses/use honey traps and then 'encourage' officials to be corrupt, be that police detectives (the more senior the better), CPS, court officials, judiciary, prison officers etc. This is now very robustly monitored, particularly with certain police/NCA departments and investigations that target OCG's.
I accept that police have not been forthcoming with being up front about their mistakes and failures. Many organisations are the same, as you say. I feel it is a massive problem and requires a change of culture.
Airlines use black box thinking, which is to openly admit errors and address them to eliminate them. It is not a blame culture but one of learning because mistakes in the sky can cause hundreds of lives to be lost.
I find it hard not to believe that the SJL review was one of ideas and frankness. One where all thoughts were encouraged and thrown into the mix. After the errors of the initial investigation they would have gone to great lengths to make sure that they got things spot on.
I find it enormously disappointing that there is so little confidence in the work of JD's investigation team.
People seem to feel that if there is no body and no conviction then the police must have got it all wrong. How about that the original errors that lost evidential opportunities, the limitations of forensics, the absence of ANPR, CCTV, mobile phone data etc, and the sheer luck of the offender allowed him to get away with it? It was 1986 not 2016.....investigators just didn't have all the tools they do today.