@Stephen ********
>and going to the local authorities to add your name to the Tambien ban
Nobody can be added to a Tambien Ban. You can go on a Tambien Ban if you're a Thai citizen :\
>my partner is in actual fact my ex wife. We were married and divorced in Thailand,
For a non-O visa, the marriage must be legal with a marriage certificate. For an extension of stay based on marriage to a Thai national, it must be legal, and you must be living with her.
>On the advice given by the Thai embassy in London they said it would be easier to marry again in BKK as all the original marriage/divorce papers are there.
They are *probably* right.