We've got the "Diplomatic Protection Squad". Same deal really, although they are concerned with all members of parliament and also look after foreign VIPs that come here. I think they're more of a "jump in the way of a bullet" type of security than a spy cameras and secret files type.
I've actually seen them training in a gym at the RNZAF base in Auckland, they are massive guys. Oh and the huggest mean ass looking woman I have ever seen!