>>>I'm told the modern day Scotland Yard has armed officers who carry fully automatic weapons. Of course, I guess I could spare a few....
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>>You'll see plenty at the airports, and with Heckler-Kosche semis slung across their chests.
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>>You should be able to smuggle it all in easily too. After all, it's not as if we've suffered terrorist atrocities her, as you have, and are thus geared up for such security.
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>>BTW, the ONLY resemblance to the traditional police uniform left here now is the bobby's helmet.
>
>I'll need to trade one of those guys some Jack Daniels for a helmet!<g>

In many US cop shows the captain often has a collection of police headgear on his dresser, usually with a London bobby's helmet. (I'm surprised you haven't already got one, with the head still in!). You'd probably get one in a bric-a-brac shop, or one of the big London street flea markets