I note that the current equivalent values now stand at £1,483 for the monthly income requirement and £18,250 for the lump sum. Nevertheless, the official requirements published on the embassy’s website appear to remain conveniently unchanged.
To qualify for a Non-O visa based on retirement through the Thai Embassy in London, you must be over 50 years of age and have either a lump sum of £ 18,000 OR a monthly income of £ 1500.
Just make sure he has your full address in Thailand. He’ll need it to complete the TDAC arrival card and in case Immigration asks, which they rarely do.
The processing time stated on the website is 10 business days; however, this is merely an estimate. You may wish to wait a little longer and contact them if you have not yet received any update by email.
Good and clear comment, but he still wanted a Non-O visa based on marriage to a Thai national. He just got a bit unsure about the financial requirements and thought it required both income and a lump sum.