The UK’s Investigatory Powers Act allows the State to tell lies in court

‘Blighty’s freshly passed Investigatory Powers Act, better known as the Snoopers’ Charter, is a dog’s dinner of a law. It gives virtually unrestricted powers not only to State spy organisations but also to the police and a host of other government agencies.
The operation of the oversight and accountability mechanisms in the IPA are all kept firmly out of sight – and, so its authors hope, out of mind – of the public. It is up to the State to volunteer the truth to its victims if the State thinks it has abused its secret powers. “Marking your own homework” is a phrase which does not fully capture this.
However, despite the establishment of a parallel system of secret justice, the IPA’s tentacles also enshrine parallel construction into law. That is, the practice where prosecutors lie about the origins of evidence to judges and juries – thereby depriving the defendant of a fair trial because he cannot review or question the truth of the evidence against him.’
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