The problem with these van, is they can use mini Gatso, radar or lasar, of which lasar can reach upto a mile away.
I did a speed awareness course a few months ago onle, with Doncaster council (if I remember right). It was the cheapest in the country from the list costing £63.50. It was boring but, the course was shorter than going to one of the venues and it saved me the points!