There's a set of rules that have been established and everyone will be working to those rules. Personally, I think that Stonehenge will prove to be have far more value than can be proven to the satisfaction of archaeologists at this point in time, so what we do now may be thought to be a mistake by people in the future.

However, as the "archaeo 21" note, nothing much happens very fast in archaeology and we're dealing with a highways system that, whilst very slow compared to ordinary business, is very fast in an archaeological sense.

My guess is that the "archaeo 21" are the best hope objection: Their submission alludes to new knowledge which was not accounted for in the consultation. If the archaeos can prove that their new knowledge materially affects the value of the monument/WHS (value as measured by the consultants), then they will have a compelling argument.