If you earn £150k a year (top 2% of salaries in the UK) you pay £6,964.16 a year. That's an astounding deal. There are no deductibles, no co pays for hospital stays, GP visits are free, as are any tests and investigations.
You do pay £9 for each item on a prescription, but if you get more than 3 items a month you can pay a flat rate of £104 a year for a prepayment certificate.
Private health insurance is still a thing - it just gets you a nicer room in a private hospital and quicker treatment for non life-threatening conditions.