I'd opine, like here, older less educated want out of the EU. They rant on about invaders from the former Empires of a diminished Europe. It appears Scotland and most of Northern Ireland didn't want the exit. How many delays did the conservatives need to hammer out the exit???
Now you greatly downplay the socialism in the so-called 'United Kingdom', I've visited your tiny country several times. Your social give-aways go far beyond health care. From all manner of benefits, subsidies, and pensions. I recall a VAT tax to pay for all the 'free-bees' the British receive. The NHS is the BEST part of your socialized system but far from it's only. One way to tell a socialist country- single digit defense spending- where is the rest going????
As far as the rest, I found the food pretty good (baked beans for breakfast????) and any head on a pint was forbidden.... ✌