Do you have an appointment?
I always find it funny when you have the news stories about people having an appointment at the Police station, whereupon they get arrested.
Whilst it is nothing like as dramatic as "Metropolitan Police storm Coulson's house, Coulson arrested after Taser discharge", it certainly feels a lot more British!
The only thing missing to make it the ultimate British experience is if it were a mass arrest, and you had five suspects all in the waiting room in an orderly queue waiting for their turn to be arrested.