I hate when we adopt these americanisms too. Like, when they misbehave, children are now 'grounded' - thats an import. I also think the writers are trying to copy Waterloo Road - but not in a successful way!
I remember watching the Bill a couple of years back and they were sat discussing a case a looking at pictures of terrorists when one of the policemen said, "Look out for him, he's a known suicide bomber".