case laws?

As per your query, let me tell you that the constitution of the United Kingdom or British constitution consists of written and unwritten arrangements that led to the formation of the United Kingdom of Great Britain and Northern Ireland as separate political bodies.

I've laid down a few links for your persual through which you can attain crucial knowledge about the constitution of United Kingdom, do check the links for more input —

https://www.ucl.ac.uk/constitution-unit/what-uk-constitution/what-uk-constitution

https://www.bl.uk/magna-carta/articles/britains-unwritten-constitution

Hope It Helps

Regards
Kevin M. Paul

thank you so much sir it will help