Likewise. The Smallfilms animations, narrated by Oliver Postgate were a special part of my childhood. I bought most of them on DVD for my own kids when they were little: The Clangers, Ivor the Engine, Bagpuss.
I would include Mr Ben and The Magic Roundabout in this category. Odd, engrossing, non-violent, very reassuring late 60s-early 70s independent British productions ( Magic Roundabout animation was French but the script and narration was British.)
I don’t know if any of these made it across the pond. They are deeply cherished in the UK.