Nonsense.
“An act of Parliament can be enforced in all four of the UK constituent countries (England, Scotland, Wales and Northern Ireland); however as a result of devolution the majority of acts that are now passed by Parliament apply either to England and Wales only, or England only;”
https://en.m.wikipedia.org/wiki/Act_of_Parliament_(UK)#:~:text=An act of Parliament can,generally acts only relating to
“Laws do not necessarily apply to the whole of the UK as different countries within the UK have devolved powers for different areas of government, like health or education. Laws can sometimes apply to only England, Wales, Scotland or Northern Ireland.”
https://eachother.org.uk/how-do-laws-become-law/