The same ones, who as I experienced very early one morning, will pull you over on the pretext "you looked to have been going a bit fast" in order that they might have the excuse to breathalyse and check licence, rego etc. I wasn't speeding nor had I been drinking and once he had given his weak excuse to my question as to why I had been stopped speed wasn't mentioned again. It was an illegal fishing exercise predicated on him saying he thought I was speeding.
Err, no. Stop making rubbish up.
A police officer has the right to stop you to exercise his or her conferred powers under the Land Transport Act 1998 and regulations enacted under it.
Feel free to post with facts but don't make inflammatory BS comments. A police officer may further require you to submit to a breath screening test by virtue of you driving on the road under s 68(1) of the Act. These kinds of things are known (in broad outlines) by anyone who's ever read the Road Code. Perhaps time for less typing and more thinking?