What is the process for applying for a British passport for my daughter who is a British citizen living in Thailand?

The process for obtaining a British passport for a child in Thailand revolves around the fact that if you are a British citizen, your child automatically qualifies for British citizenship and subsequently a passport. You will need to apply through VFS in Bangkok, prior making an appointment via the UK government website. Important documents include the child's long-form birth certificate and other relevant paperwork. While it's preferable for at least one parent to be present for the application, it's possible to use an agent to handle the submission. Additionally, having a Thai passport for your child is not a requirement for the British passport application.