It is a common misconception that police around the world read from the same script when making an arrest. It had got to the point that there was a traditional response among Fiona's coworkers in Staines when, in a movie, a British copper read someone their very-American Miranda rights. That response was throwing popcorn at the screen followed by humming "God Save the Queen," for reasons no-one still around could remember.
There was a script they were supposed to follow, however, although Fiona may have editorialized it somewhat.
"You're under arrest under suspicion of murder, conspiracy to commit murder, witchcraft, carrying an offensive weapon, having an offensive face, being an ugly git, being a part of a criminal organization, and for numerous general counts of being a really obviously bad guy. You have the right to remain silent, but anything you do say—what was that?"
The dark wizard groaned inaudibly.
"You say you're resisting arrest?"
The wizard moaned in discomfort, his eyes unfocussed and dazed. His ears were bleeding slightly.
"You say you're a danger to yourself and others? That you need to be sedated for your own safety? Well, if you insist. How convenient that we all just so happened to be issued just such a drug in addition to our standard equipment. Must have been in error. I'm sure the guys in Logistics will sort it out. But in the meantime..."
Fiona shot Amycus Carrow full of enough juice to down a rhinoceros and called in the arrest on her radio.