If you believe the Crown Prosecution Service is not leant on by the government and security agencies on cases that have a significant "political" bent then I am afraid you are away with the faeries.

Now the link below you can take at face value or you can probe a little deeper and come up with an entirely different agenda.
https://www.mi5.gov.uk/news/intelligence-security-and-the-law

Let us take a couple of examples.
Tommy Robinson was arrested for contempt of court, hauled before a judge, sentenced and incarcerated in the space of an unprecedented 5 hours. Do you seriously believe it all happened "just like that"?
Tommy Cooper's magic or government complicity?
or
https://www.theguardian.com/world/2012/feb/14/mi6-licence-to-kill-and-torture

The real world is a dirty place at times, luckily most of the time we are shielded from the reality.