These guys would play just fine on my Region 2-adjusted Oppo Bluray player, which is still back in West Hollywood. Not "fine", in fact...great. They won't play on the domestic 4K Sony Bluray player, of course, and so they're just dead tissue...sad, mute and forlorn. Blurays left to their own devices aren't Blurays at all. No spin, no purpose. For Whom The Bell Tolls is HD streaming, of course. A Kind of Loving is streamable, but apparently not in HD. I'd be fine with streaming The Day The Earth Caught Fire, but apparently the only HD option is to buy the Kino Bluray, which popped in July 2020.