UK
Book the Life in the UK Test through this website www.gov.uk/life-in-the-uk-test/book-life-in-uk-test
UK Visas and Immigration www.gov.uk/government/organisations/uk-visas-and-immigration
Thailand
The British Embassy in Thailand www.ukinthailand.fco.gov.uk
Official UK Visa application website in Thailand – VFS Global www.vfglobal.co.uk/thailand
Royal Thai Embassy in London www.thaiembassyuk.org.uk
UK Government and Thailand www.gov.uk/government/world/thailand
UK Foreign Office Travel Advice for Thailand https://www.gov.uk/foreign-travel-advice/thailand
Vietnam
Vietnamese Embassy in London www.vietnamembassy.org.uk
UK Government and Vietnam www.gov.uk/government/world/vietnam
UK Foreign Office Travel Advice for Vietnam www.gov.uk/foreign-travel-advice/vietnam