There was an article in the Sunday Express about villages in England but near the border with Scotland being encouraged to apply to join Scotland as on average there is £1500.00 per head more spent on the people than in England.
This gives rise to free care in old peoples homes , free dentistry and prescriptions. So no loosing your house if you live long enough to need care in your old age.
So no there is not one National Health Service it appears to be very much a postcode lottery , trouble is it affects, in some cases, whether you live or die and this is not good enough.
After all you don’t pay different rates of National Insurance or Tax depending on which part of the UK you live in so why should spending on treatment be different.