I am applying for certificate of entry to London embassy, do I need to have bought insurance before i apply to complete the process, or can you add after they give COE?
TLDR : Answer Summary
To apply for a Certificate of Entry (COE) for Thailand, you must have already purchased insurance. Various comments confirm that having insurance is a requirement before your application can be processed. You also need to provide other documents such as a passport copy, visa, ASQ hotel confirmation, flight details, a Fit to Fly certificate, and a negative COVID-19 test within 72 hours of travel.