Recently announced in a tube station

"Young ladies who have just exited the escalators: We can see you. And we have taken the liberty of sending the British police in your direction for your prompt arrest."

Even when letting someone know that they are about to be arrested, the Brits still maintain the upmost respect and etiquette. I mean, "young ladies"? I always thought that you had to earn that title, like by not committing felonies in public.