I believe you can get international guaranteed renewable insurance if you are young and healthy. As an older person, or with pre-existing conditions it is either unavailable or too expensive.
Try insurance for ex-pats is medically underwritten and not guaranteed against rate increases or non-renewal. So the older we get the harder it’s going to be to manage this.
I have account at Sukhumvit 31, near Emquartier. I brought USA embassy letter of residency, condo contract, printout of USA accounts with large balance, 60 day tourist visa which I later changed to non O retirement. I got savings account and debit card, mobile app and internet banking. I dressed professionally.
You can a) apply for new O visa in London, if they still issue them, or apply for O-A visa there, needs medical and police check from UK (thai medical might be ok). b) get new 60 day tourist visa in London or a nearby Asian country. Convert to Non-O retirement, which will get you additional year after first 90 days. You will need proof of ฿65K/month income or ฿800K in Thai bank. No medical, police, or health insurance as of now. I have this one.
I did it that way. Saved getting police clearance and medical in home country, and may not be affected by new requirements for medical insurance (฿800k method).
Steven de Blaquiere they don’t have that anymore apparently. I’m US citizen, but I avoid posting anything against him. My angry generation in USA, UK, France, few other places, got to die off. As Springsteen said in a song, “foreman said these jobs ain’t coming back.”