AIBU to find it incredibly frustrating that there are basically no resources in the UK for people like me?

Thats also worth thinking about. Why do you think?

Shakespeare was extraordinary. Not because of his IQ (no idea whether that was high or not) but because of his achievements. He gave so much to society through his writing and has made a lasting impression.
Imagine, if he'd sat at home thinking about how special he was and never actually got round to doing anything.

It sounds to me that you are proud of how gifted/exceptionally able you are and can't find anybody to help you understand why. Why not put your very able brain to good use and do a degree/MA/doctorate in the subject when you can research, become an expert and write about it yourself? There's obviously a gap in the market.

So you lack focus.

You have to have impairment to be diagnosed with autism or ADHD. It's part of the diagnostic criteria so without impairment you do not have autism or ADHD.
You said you have been assessed and found to be gifted. So this assessment has looked at how your brain works. Did you not get a report based on this assessment?
Why don't you simply do your own research around how gifted brains and synaesthesia work?
You can pay for a neurodevelopmental assessment which includes a cognitive assesment.

try searching ‘google scholar’.
wish I’d not wasted the 6 minutes i’ve been on this thread.

What you seem to be after, @Maybeasd , is a service that isn't provided for the purposes of healthcare but is simply available for the curious. A bit like DNA testing for people who idly wonder about their percentage of Mongolian or Western European or African ancestry, etc.

Why is this different from (for example) wanting there to be more paintballing facilities or Armenian restaurants? Unless a service is required for health or some other social-justice-related purpose, it is provided (or not provided) on the capitalist basis of effective demand.

If enough people with the money to gratify their curiosity wanted the services that you also want, then they would be provided. If there is not enough demand to make servicing this type or recreational self-investigation a viable business, then why would you expect it to be provided?

Did a funding organisation pay the course fees for you, or did you take out a loan or self-fund?

I went to a university where an alumni has won an Oscar (quite recently) and more than a couple of Nobel nominees, one an acknowledged important poet.

Doesn't make me any brighter.

Plenty of psychology avaliable online if you look for it. Try PsyPost for starters.

Oh help, DH was assessed as having an IQ of 146 aged 7 (told and shown the documented proof by his lovely proud aunt, he'd have burned it)

He is a very bright man IMO but with gaps in his knowledge (like everyone) and vaguely embarrassed by having been formally assessed, it is a joke. It was a thing for a couple of decades, hopefully we will move beyond such arbitary and selective 'proofs' of intelligence, because they really don't mean doodily.

Shakespeare was not a good scholar by his own account, 'small Latin and less Greek'. He was still Shakespeare.

And when this intelligence is assessed, analysed and you get some ideas about how it works and how to maximise its potential power, what do you plan on doing?

Having great brain power is one thing. Making good use of it, quite another.

Its not relevant, but it is of interest. The fact that alumnni of these establishments have won Oscars, is, however, irrelevant.

So do you think you met a perfect cross section of the population at MIT and LSE, where the vast majority of people were much less intelligent than you?

That still makes zero sense, especially from an allegedly intelligent person:

i said that after asking on Reddit, and how they reacted and what they said, it seems that it was more likely that the giftedness was more likely to explain my experience than ASD.

You thought all your life your were on the spectrum but because of some Reddit people (who you no doubt simply irritated with your attitude) you decided it's not ASD but your 'giftedness' that explains it all. Why the heck would anyone base such a belief on the say of some Redditors? And the retreat into 'oh well, it must just be down to how super special I am' is just... well... not very intelligent at all.

LSE has a good reputation. Did you feel you were more gifted than the others on the course?

Try us, we're quite clever, you know.

You'd think that someone who is supposedly "gifted" would perhaps be able to figure this out quite easily.

On a previous post, you said you decided you were gifted after some people on reddit decided you weren't ASD. It's a big leap from that to this. No idea what your diagnosis is, but any adult who goes around describing themselves as gifted like this has definitely got something missing.

Exactly, that’s common sense.
OP hasn’t answered the question about where she got her degrees. I wonder why?

I think the first world is suffering from an epidemic of navel gazing.

That's ridiculous. Most people with IQs in the top 5% of the population will meet far more than just "a few" others like them.

For example, those who end up going to top universities etc will likely be surrounded by people just like them. Many career paths will also bring people into contact with others just like them.