Watching the last season right now. What a beautiful young man.
Funny story - he was working as an usher in a London theater right up to his casting in The Crown and I saw him serving ice cream to some ladies sitting one row ahead of me when I was at Cabaret literally one week before he was announced as William. I immediatedly recognized him when websites started reporting his casting because he was striking even while selling ice cream, he certainly made an impression!