ASL vehicle offender

Unfortunately the law is a bit vague here (as outlined up there ^), so even if they did know what they were doing, the rozzers could't do anything.

Well, the law is actually fairly clear. The problem is that it makes enforcing ASLs more difficult (not impossible, as police sometimes claim).

Don't get too caught up in demanding ASL enforcement as a kind of token return gesture in exchange for RLJ enforcement and the like. ASLs aren't a very good idea in any event (they were created partly in response to the fact that many cyclists always try to filter to the front, regardless of circumstances, when it is much better advice to sometimes stay back and take up a clear and visible position in the queue), and there are much more important types of enforcement that we should demand, such as speed enforcement or vehicle checks (insurance, HGV safety, etc.).

I'm personally quite relaxed about ASL encroachment, as I think that the basic concept simply isn't very good.