How can British passport holders transfer their immigration stamps to a new passport in Thailand?

This conversation discusses the process for British passport holders to transfer their immigration stamps to a new passport in Thailand. It highlights that a letter from the British consulate is typically needed to confirm the issuance of a new passport, although some users mention that this may not be required for Australian passport holders. Users share experiences and advice regarding the sharing of this letter, emphasizing the importance of protecting personal information when doing so.