Ian here is the UK list of requirements :
Non-Immigrant Type O- A (Long Stay) 1 Year/Multiple entries
Printout of visa application form submitted online, with bar code
Passport or travel document with validity not less than 6 months and at least 2 blank pages
A medical certificate issued in the UK or Ireland or Thailand, showing no prohibitive diseases as indicated in the Ministerial Regulation No.14 (B.E. 2535) which include Leprosy, Tuberculosis, Elephantiasis, drug addiction, third stage of Syphilis, and the certificate shall be valid for not more than three months.
Certificate of criminal record clearance from the UK (ACRO, DBS, or issued by the police) or Ireland
Financial evidence showing monthly income of not less than 65,000 THB (approx. £1,625) or having the current balance of 800,000 THB (approx. £20,000), e.g. bank statements, proof of earnings, for at least 1 month
If you wish to be accompanied by spouse, the marriage certificate will be attached. But your spouse will be granted Non-Immigrant “O” instead of “O-A”(Long Stay)
Applicant must be of age 50 years old or over.
Note:
- Please submit the originals of bank statement, criminal record check, and medical record, as well as one photocopy of each document. In case that an applicant could not submit the original documents, the Embassy will accept the photocopies which have been certified by a Notary Public officer or Solicitors.
- The consular officers reserve the rights to request additional documents as deemed necessary.
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