I was caught by them too, Steve. Easter Monday at 7AM. Road works on the M61 near Bradford. No traffic. No-one working. I think at times they are just a money making scam. But, still, I did break the rules :-(

One of the Lada estates I owned had quite a unique feature that assisted greatly with tailgaters. Before the era of reversing lights coming on automatically, this one had a reversing spotlight with a switch on the dashboard. Often contemplated fitting one to other cars since :-)