Certainly. That is my wheelhouse these days—governance and public administration. I've written a book on the tradecraft of politics.
To the premise of your question, in a free, democratic society, it's very important that the justice system operate independently. That includes the police, the prosecutorial service and the courts. Parliament—you—create the framework of laws within which they operate, but in terms of their actual practice of investigations, arrests and prosecutions, those should be conducted fully independently.