Dyfed Powys aren't much better
Dyfed Powys came up with a stop all bikers thing a few years ago. Ended up stopping the same bloke, on his way to work from Brynaman to Swansea, every day for a week. The bloke was on the front of the local rag holding all of his producers.
Also - got stopped, for a reason that was never made clear to me, just outside of Llandovery. Plod then had a field day when he found that the car was registered to the G/Fs mum. Of course plod was deflated when he found that the car wasn't reported stolen, was taxed and MOTed, I was insured to drive it, had no defects and after several phone calls confirmed that she knew I was driving the car (I was dropping something off for her).
After this whole thing I was told by Plod - "Don't do it again". When I asked what I had actually done wrong, and should not do again, Plod replied "That" and got in his car and drove off.