I know this has been covered before but I can't seem to find the thread

I understand when you get your new passport you have to go to the British Embassy and get a letter from them. Has anyone been through this and how did they do it .. Is it true you can't go without an appointment ?

Any help and advice would be greatly appreciated

You ask for this letter at the time you apply for the passport or when you pick it up. The consular section of the British embassy in Bangkok knows about this immigration requirement and has a template it can use to print out the letter.

The letter confirming you have a new passport and requesting Thai Immigration to transfer any visa stamps is now given out with the new passport when you get it back at the VFS Office at the Trendy Building.

The letter is now already stamped with the vice-consul's stamp, and so does not require you to go to the British Embassy, (although no-one there bothers to tell you that!) - it used to be that you filled out the details on the form and took it to the Embassy for validation.

Now you simply fill in the details yourself in the spaces provided and take the letter to your immigration office with your old and new passports, with the relevant pages copied, and the form requesting stamp transfer.

The letter confirming you have a new passport and requesting Thai Immigration to transfer any visa stamps is now given out with the new passport when you get it back at the VFS Office at the Trendy Building.

The letter is now already stamped with the vice-consul's stamp, and so does not require you to go to the British Embassy, (although no-one there bothers to tell you that!) - it used to be that you filled out the details on the form and took it to the Embassy for validation.

Now you simply fill in the details yourself in the spaces provided and take the letter to your immigration office with your old and new passports, with the relevant pages copied, and the form requesting stamp transfer.

partington that's great news... thanks for sharing