To quote Homer Simpson: 'Oh Marge, the American health system is the best in the world, except for Japan, Sweden, Great Britain...well all of Europe, but you can thank your lucky stars we don't live in Paraguay!!' or something to that effect
I guess the US could never adopt a British style system really. Ours was founded in 1948, when things were simpler and people were more trustworthy, and it has adapted and changed since then, and still only costs a few percent of our GDP. In the US, it would be almost impossible to start from scratch in the modern climate.