A Question for British Archaeologists

British archaeologists are engaged in a process or "bridge-building" and compromise with all manner of artefact hunters and portable antiquity collectors. I'd like to address a question to those among them that support, advocate and actively pursue such policies, including the Council for British Archaeology and the Portable Antiquities Scheme:

"when is personal collecting of portable antiquities "archaeology for all" and when is it not?"

A straightfoward question; getting an answer to it from British archaeologists seems not so simple, I wonder why? They talk of compromise, but seem unwilling to disclose the limits to the degree to which they will compromise archaeological principles to avoid any form of confrontation with the artefact collecting lobby.