The NHS costs are limited to £9 per prescription (England only, waivable on low income). Hospital visits are free; people complain about having to pay for parking, because they lack all perspective on how bad it might be.

The tax is not hypothecated but is about £3k each. https://www.bbc.co.uk/news/uk-42950587

(Dental and optical you may have to pay up to a few hundred £ for)