How does the American health care system differ from the British health care system?

In Britain we don't have to pay for our lives to be saved. We pay taxes to the National Health Service (NHS) that looks after us for free - in the US they pay health insurance, and whenever they want something done they must try and get a payout from their insurance company, and insurance companies are notorious for being difficult - as in reluctant to pay out. Of course if you have a heart attack, they will pay out.

Hospitals in the US are run by private companies, funded by insurance premiums. In the UK, they are funded by government money/taxes.