Looks like we need to do this in baby steps.
The Senedd legislated for these restrictions and they are primary law in Wales. The relevant law is here.
https://gov.wales/sites/default/file...tions-2020.pdf
Individuals, organisations and commercial undertakings have the right to challenge that law via Judicial Review. In doing so they will seek to prove that the measures are legally defective and disproportionate. They are challenging the law made by the competent authority which as I say again is involved in zero activity in the market sectors in question that would make it a dominant entity in that sector.