could you you point out the statute exempting the Windsors ? I think you’ll struggle as no such law exists.
Yet you keep referring to ‘not legally required’
Well you’ve said you are a solicitor or a barrister I’m sorry I can’t remember which so surely you’d also point out that the ‘Memorandum of understanding’ re their taxes often referred to here, is of zero legal standing ?
If you actually read my posts, I have already provided the answer at the top of this page: “The Sovereign is not legally liable to pay income tax, capital gains tax or inheritance tax because the relevant enactments do not apply to the Crown”. That is the answer in and of itself - unless an Act is specifically stated to apply to the Crown (and some do) then it is presumed not to apply to it. Tax acts do not state that they apply to the Crown.
This is a rule of statutory interpretation consistently confirmed by the courts, including the highest courts in the UK. As expressed by Lord Keith of Kinkel in Lord Advocate v Dumbarton District Council [1990] 2 AC 580:
“Accordingly it is preferable, in my view, to stick to the simple
rule that the Crown is not bound by any statutory provision
unless there can somehow be gathered from the terms of the
relevant Act an intention to that effect. The Crown can be
bound only by express words or necessary implication”
This passage was recently quoted and approved in Lady Justice Hale’s judgment in the Supreme Court case of R (on the application of Black) v Secretary of State for Justice [2017] UKSC 81.
The UK’s judiciary have not been swift to find that it is necessary to imply that a statute applies to the Crown absent express wording. So if it’s not in the statute, it doesn’t apply.
(I love a bit of Constitutional law! Boris Johnson’s period as Prime Minister was my jam…😀 . So you couldn’t be further from the truth with your ludicrous “you’ll struggle” jibe)