A quick question about the e-visa situation from Thai embassy London. When applying for a SINGLE ENTRY non immigrant visa o based on Thai wife they ask for proof of either 400k or having a monthly income in the UK of over 40k per month. Everywhere else I've ever applied for my single entry they do not require this. My question is is this the e-visa website failing to properly consider single entry requirements or is this actually the requirements for a single entry from the UK.
TLDR : Answer Summary
When applying for a SINGLE ENTRY non immigrant visa O based on marriage to a Thai spouse, the Thai embassy in London requires proof of sufficient funds. Specifically, applicants must show either 400,000 THB in a bank account or a monthly income of over 40,000 THB. This requirement appears to be standard for applications from the UK, differing from other locations where such proof may not be necessary.