You're right, I haven't personally, but I do have a friend at work who has suffered migraines and other neurological issues since 2021. He's unable to work anything other than part time, and it may or may not be vaccine related. We have had at least three other staff members who got long COVID that meant late 2020 to end of 2022 was basically nothing but constant doctor visits and attempts at trying to engage with work, and failing.
This is really more of a case-by-case thing, because it's, again, not even as big as long COVID, and it took a while before that got properly accepted in the mainstream as being something worth looking into and not just weaklings wanting to skive off doing work.
The problem, as we see with this thread, is that the only ones who want to lend an ear to your concerns also happen to ally with those who are firmly in the David Icke and Alex Jones camp. And that simply isn't a good look, even if they are (whether through genuine concern or vested interest) listening to that minority.
The NHS is basically this way with a lot of things, though, so I'm not really surprised you're having issues. I have a friend who has been waiting to see a mental health counsellor for two years since moving to this county, and only last month did she even get a call. It's horrible, and yet we have basically allowed the NHS to run into the ground a lot of services that now, more than ever, are absolutely vital. I'm pretty sure a video call with a GP is not going to cut dealing with obscure chronic illness caused by a vaccine, and yet that's the kind of thing you can expect to get when wanting an appointment for many other better known ailments now.