Legal issues arising – it is in part connected to non disclosure, which led to the downfall of ex Det Ch Supt Dave Cook, but also – as hacking is in vogue, especially with Peter “The Armenian Shakespeare” Jukes, the state sanctioned hacking of targets such as Jonathan Rees and Glenn Vian.
https://www.theregister.co.uk/2016/12/06/parallel_construction_lies_in_english_courts/
The use of recordings in the miscarriage of justice surrounding Kim James and Simon James is pertinent, only one side of the conversation is heard (Jonathan Rees) so what do New Scotland Yard have to hide when it comes to the other voice that of paid informer Derek Haslam?