I am a British Citizen. I have a long-term partner who is a Swedish (EU) citizen. We currently live and are resident in Spain for the past 6 years. We have lived together for 21+ years (Since 1999). I work independently for myself as a games programmer for my own game, and both of us are tax registered in Spain. She currently doesn't work but wishes to pursue her artwork online when in the UK.
We've also previously lived together in the UK 2009-2012. Previously to that we lived together in Sweden and also Australia. If that is important.
We want to return to the UK ASAP, as I am looking for a new job, and want to be based back in the UK.
Previously to Brexit, we could just return and live there, but now I'm not sure what to do.
I've read masses of pages and links on the UK Gov website, asked them directly via their online help form, phoned them, and I still am not sure what to do about our situation, and wondered if anyone here could help.
Everything we find seems to be 'if' 'maybe' 'could be' and no definite or straight answers.
Even writing to the Gov site, as myself explaining my situation, the reply I got via email seemed to just be a copy-paste reply, that seemed to ignore my information, and just give info based on my partners perspective, to links on their site. Which I mentioned I had already read, and didn't understand what I needed to do in our situation. So I guess it was AI/bot generated, and of course with a 'noreply' email address.
I think she might need a 'EU Settlement Scheme' visa or a 'Surinder Singh' visa.
But talking to the EU Settlement Scheme help line, they said it's now to late to do that, as we had to previously be in the UK before 31/12/2020. He told me to talk to another Gov line, which charged me 69p per minute to basically tell me 'maybe' you need the 'Surinder Singh' visa.
The 'Surinder Singh' visa seems to be directed to Non-EEA people, but the latest reply from Gov.uk said that was 'probably' what I needed. But after further reading, I'm not so sure.
All of these options seem to be very 'large' decisions to make, and take weeks if not months to do. And rather costly.
It seems like nothing is geared to British Citizens returning to the UK with EU partners. I mean, one of the Visas I was directed to requires English tests, going to Madrid twice (not so easy during Covid restrictions) and all sorts of things.
I can't believe it is this hard to get a straight answer out of my Government on how I can as a Citizen return with my long term EU partner to live in the UK, and why it seems to difficult and complicated

Any help would be appreciated.