Fiction

I stopped watching after two episodes because I've ready many real biographies of the British Royal Family, and boy, does "The Crown
get stuff wrong. Like presenting Phillip as a kind and loving father to Charles. Nope. He was critical, unkind, and not remotely an affectionate father. Other stuff about Margaret, presenting her as more or less a person of the people. Nope. You read much about her and learn she was essentially an arrogant asshole who demanded everyone treat her with great deference, while she behaved like shit.

Honestly, read some actual biographies of these people and you'll be able to clearly define the difference between fact and fiction.