Looks like the GP is in the UK.

I tried to go private (also not 50), but everyone just refused. Pharmacy, GP, private GP.

Currently I'm arranging it in the third country because WTAF.

(UK becoming the dirtiest and sickest country of Europe one more time)

I think the bigger thing is that the vaccine has a peak response window, and the current medical guidance lines that up with when you're epidemiologically most likely to experience a shingles outbreak (for most people, that's very unlikely when you're young, because your immune system is so jumpy, but that wanes with age). If you get the vaccine early, its effect can be attenuated right when you need it most.

(I don't like this logic and if I had the option of just going to Walgreens and getting vaccinated, I'd do that this afternoon. I'm just saying, there's a logic to it.)