You can research the UK Visa / Passport legislation on UK Government Websites for the definitive answer.

Until the day you die....As long as you meet the financial criteria, are not deported / incarcerated or change your "visa".😉

UK Embassy should be able to furnish you with a list of "Court Approved" translators?

Most international law firms have notary / translation services?

Tax return documents?

For UK Expats it's easy to use a P60 form to evidence income and tax payments. Accepted by Thai IO.

@Andy ***********

HMPO on Strike for 5 weeks April-May 2023...

Online 90 day report guidelines....

5.1 Update and present bank passbook to show required deposit remains in account or shows required 12 X monthly Foreign Telegraphic Transfers (FTT).

5.1 Bank statement for the 12 month qualifying period. (If using BKK bank this will take a week to prepare).

5.1 Bank will issue a letter / current balance confirmation (dated the same day as application) when you collect your 12 month statement.

5.1 So either make a deposit or small withdrawal to confirm your account is live.

(I usually withdraw the amount it costs for the renewal and single re-entry permit).

5.2 Photo copy all pages of passbook, showing either deposit, or FTT monthly income. (Copy the last page after updating passbook where you either made a deposit or withdrawal on the application date)

5.3. Evidence of foreign currency fund. (AML / CRS regulations).

My IO accepts my P60 from my pension provider as evidence of legitimate foreign funds.

Try Lithuania, 98.7% acceptance rate for Schengen Visa. Then just travel to Italy from there?