the UK allows it if for example, you live somewhere which the law says you must have a passport on your person, or you need to travel, and your work requires that for visa applications you need to send a passport away.
gbp requirement, or proof of a state pension. As the OP is of pensionable age, is this not an option??
“Non-Immigrant Type O (Retirement (pensioner aged 50 or above with a state pension who wants to stay in Thailand for no longer than 90 days) - single entry only)
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
Confirmation of legal residence in the UK or Ireland”