I would advice you to read my posts always carefully.
I didn't write a Thai man was involved
Yes, you did. I would advise you to read your own posts "always carefully" [sic]...
"Being drunk and have a heated conversation with another (Thai) man".
Depending on the type of, probably, light clothing that he was wearing at the time, sea movements can easily remove clothing from a floating body particularly the type shown in the first photo of him in the OP.
Barclays International accounts are not UK bank accounts, they are held in either the Isle of Man or Jersey, neither of which are in the UK, that is why UK residency is not a requirement.
Why don't you SWIFT the funds from your UK bank account to your Kasikorn account? What is a "financial outlet" the the lack of which you seem to be making a stumbling block?
The risk of your UK bank account being closed due to your residency is very slight unless you plan on telling them that you will no longer be UK resident or there is something else that makes it obvious to the bank that you will have moved overseas.
”How do you receive money from your 2 providers, by courier and in cash?"
Perhaps he has not started to receive funds yet?
"What reason do they give to not allow you to transfer money to a UK Wise account?"
They do not have to give any reason but it is probably set out in the pension schemes rules that payments have to be remitted to a bank, Wise is not a bank.
You can't move from the UK to Thailand without first living in the UK. So yes, he does have a UK address.
Does he?...
That clearly suggests that he does not.
Ask them to remit the funds to your Kasikorn account. Or are you implying that they will not send to overseas banks?
If you have two UK pensions how come you have not got a UK bank account to receive funds from which you could SWIFT transfer?