Short answers, pulled from the story.
The Tudor dynasty collapsed with the death of Elizabeth I on the 24th of March 1603. King James I replaced the red dragon of Wales with the unicorn of Scotland, effectively demoting Wales from a co-equal partner to a subordinate status in the visual language of the monarchy.
The Laws in Wales Acts of 1535 and 1542 fully incorporated Wales into the legal system of England. These Acts created a single jurisdiction that treated the two nations as one unit for administrative purposes and updated outdated Welsh laws.
The Wales and Berwick Act of 1746 cemented the legal merger by specifying that references to England in legislation would by default include Wales. This definition remained in place until the Welsh Language Act of 1967 began to carve out distinct statutory identities for the two nations.
Edward I conquered the Principality of Wales in 1283 and the Statute of Rhuddlan of 1284 aimed to replace Welsh criminal law with English law. Welsh law continued to be used for civil cases until the 16th century.
The devolved Senedd, previously named the National Assembly for Wales, was created in 1999 under the Government of Wales Act 1998. A referendum on the 3rd of March 2011 granted the Senedd direct law-making powers without the need to consult Westminster.
A registered office must be specified as in Wales if the company wishes to use a name ending in cyfyngedig or cyf rather than Limited or Ltd. The Companies Act 2006, Subsection 9(2), formalized this requirement to ensure the choice of registration location has tangible legal consequences.