@Tony *********
it looks like London are now issuing non immigrant O visas again. They did stop.
Just check the financial requirements that sound a little strange.
Financial evidence e.g. A copy of pension statement if the applicant is a pensioner, or a copy of 1-month bank statement showing your income from pension, or 3-month bank statement of at least £10,000
The way this reads is that you only need one month proof of income (65, 000 Baht equivalent) or you need £10,000 in your account for 3 months. This is a definite change of requirements.