London appear to change their minds on a daily basis of how they do it and what they do or don't require.
The other issue is the person who you speak with on the telephone, may not be the person who deals with your application.
Other than doing it the way they have laid it out on their website, it's a game of chance on the day. They appear to treat each application on an individual basis with no set pattern.
Here are the requirements. If they never really wanted them, I guess they wouldn't of listed them or said that although we require 6 months of evidence, 2 or 3 months is ok if you cannot supply it?
Here's another thing, if you cannot meet the requirements, they don't refund your visa application fees.
For Multiple Entries (stay up to 60 days for each entry within the period of 6 months)
A current passport with validity not less than 6 months beyond the date of depature from Thailand and at least 2 blank pages. Applicants must fill in online visa application with their given name(s) and surname as appear in their passports.
Printout of visa application form submitted online, with bar code
Financial evidence e.g. original bank statement of the applicant showing a balance of at least £5,000 (for 6 months) or a print out with official stamp of the bank
A letter from the applicant's employer (in the UK and addressed to the Royal Thai Embassy)
If you are self-employed, your self-assessment and a company registration document are required.
Travel booking confirmation
Proof of accommodation in Thailand e.g. hotel booking, invitation letter from family or friend in Thailand
Confirmation of legal residence in the UK or Ireland (if applicants are not nationals of these countries) e.g. long stay visa, residence permit, BRP card
you better hope that a simple bank statement is enough. If they actually want a letter from your pension provider showing the amount of income, that normally takes anywhere between 4 and 6 weeks to produce due to needing to work the future figures out.
I don't think its the bedding in of the system is what the problem is.
The problem imo, is them not requiring hard copys of the documents in the first place when using the postal option. That in my mind is all to do with them not wanting to store it, post it all back, needing A4 envelopes, weighing it all and due to costs, the £10 probably wouldn't cover the postage.
This isn't the first time. London are now asking more and more, where the future income is actually coming from. They list an 'Income Certificate'. In the UK, this means a letter of income from a pension provider.
Although they issue an O-A visa at 50 years old, very few people can draw a private pension until they are 55 year's old. People not already drawing a state pension at 65 year's old, will now need to be 66 and 67, depending when your born. Now they are legislating, and if they get their way, you will be working until your 75.