This checklist might help you to identify which documents you should submit with your application you can print it out with you and bring it to your visa appointment. It is not a list of documents which you must provide but rather an indication of the types of documents that are commonly submitted. Further guidance is available at www.gov.uk/ukvi
Important Note : Before submitting your application please make sure your passport / travel document is valid for travel by checking the expiry date. If you have legally changed your name under Thai law you must submit a passport in your current name. If you submit a passport / travel document which is not in your current name, the application may be refused.