No-one is suggesting that the memorandum etc. gives a legal interpretation, that's a matter for the courts. But what cannot be dismissed at a stroke is that they clearly give an indication of rationale, which is my point. If one looks at the other elements they all seem to have been ported across without change or the reason behind the change explained, not the legal interpretation but the department's reason for seeking to make the change.
I mention this only because weight is being placed on the revised wording and revisions normally have a purpose, but in this case unexplained.
The court will decide and let's hope their decision is clear-cut and prompt.