Being myself, a boring, law-abiding sod, I've never had a run-in with a British copper, so don't have a problem with what they do. As for docking wages, this shouldn't have to apply to any employee. You sign up for a job, you expect to get the wages you signed up to, regardless of the line of work.
The Nog variant of a copper, on the other hand, is a power-abusing machoman, prone to going on strike (unbelievably legal for them here) if he gets asked to work a couple of lunchbreaks extra, undeniably corrupt, and one for taking revenge against certain citizens that stand for other views that the aforementioned. The Nog police 'force' are that far behind the criminals that most heinous crimes would probably go unsolved. I would love to dock some of their wages, until the point they grow up and start acting in the greater public interest.