The UK has a constitution. But like most documents of it's kind, it's changed pretty regularly.
The Constitution of the United States of America is pretty unique among it's kind. The average lifespan of a constitution is seventeen years IIRC.
Charles? I'm pretty sure Charles hates Islam at least. Pretty sure I've heard about scandals of him throwing shade at Islam and reminding everyone his title is the Sword of the Faith. Singular. The rest of the woke bullshit? Not so sure.