We went to America to see some family and we were discussing books and we were shocked that they had never heard of Julia Donaldson and Axel Scheffler who are an absolute staple of UK kids book culture (so much so that they adapt one of her books as animations for each Christmas). So if they aren't on your radar, then they come highly recommended.

https://axelscheffler.com/who-is-he https://www.juliadonaldson.co.uk/books/