As I mentioned above, whilst true, the cover you need is still next to nothing compared to US cover. When the NHS sends you a bill, it is a very modest sum - nothing like the ludicrous numbers you would pay in the US. Even hiring a 747 to take you back to the US would not, I imagine, be more than $100,000 so the cover you need, if you are ultra cautious and decide to pay some, is very modest.

And wouldn't your US insurance cover you anyway, as per the poster above?

I'm not even sure about the A&E restrictions, despite what the website says. The UK has had a problem for a long time, for example, of pregnant women from overseas coming here to give birth because the system is free and better than they would receive at home - although I do remember promises a few years ago to clamp down on this.