Very undercover traffic cops (Derbyshire)

Just thought you’d like to know (as I was majorly shocked when I saw it!) that theres a silver people carrier undercover traffic cop car hanging around Matlock Bath and Derbyshire roads recently. Saw 2 bikers pulled up by it and felt really sorry as no-one in their right mind would think it was a traffic cop. Can’t recall the make or plate, all i can say is beware of a silver people carrier with blacked out windows!