How can I certify my UK pension documents without British Embassy services?

The British Embassy no longer certifies documents for pension verification purposes. Several alternatives were suggested, including using a South African Commissioner of Oaths based in Hua Hin for certification. For Thai Immigration, a copy of the annual DWP award letter may suffice, and it's important to note that UK pensions cannot be used to verify income; only banked monies are accepted. Another option includes getting a certified translation through a service like Othello online, followed by legalizing the document at the MFA Legalisation office in Central World, which takes three days.