Excuse if I don't know what I'm talking about, but to be honest I don't..
Bradford, a building which I was responsible for a tenants floor of, had a ground floor occupied by some sort of speed partnership outfit.
Vans fitted with speed cameras, marked up police, but orange flashers on top and driven by not the police. You would often see them parked up by the road side around Bradford, doing their thing.
Anyone tell me what outfit they were please?
Google and Wikipedia seems not very helpful on this...