Get a non o visa why u back in uk very cheap will give 90 days and u will need it to get your retire visa cheaper and easier to do o visa in uk u don’t need all that money in thsi bank account to get retirement visa if u use agent they will do it for u and only cost about 1500 baht
Invest uk better returns open thai bank account and keep what you need fantastic value if you rent property in Thailand i would for first year at least give you plenty of time to find area you like and what you like . Lots of building going on in Thailand now and may being over done lots of empty properties and value not likely to go up may be come down For good advice I contact Neil Walter’s has huge experience in all aspects of investing insurance etc here in Thailand if u want his contact details pm me