Waterboarding in Britain?

According to the TimesOnline, London Metropolitan police are under investigation for allegedly waterboarding suspects, among other things.

senior policing officials are most alarmed by the claim that officers in Enfield, North London, used the controversial CIA interrogation technique to simulate drowning.

It's interesting that UK police would think of using the tactic but so far there haven't been any similar incidents in U.S. policing. Our police just shoot people with tasers at the drop of a hat.