We just applied yesterday in Suratthani for my daughters Thai passport (father is Thai)
We needed
- fathers ID
- my passport
- tabien baan where our daughter is registered
- birth certificate
It cost 1040 Baht and we were in and out in 30 minutes, told we will have the passport within 5 days. The most simple of all processes Iβve ever been through here
my land lady was kind enough to write me another rental agreement with my mums name on it, stating the house has been paid by her for the time she is requesting the visa for..
May or may not work but worth a try. I can let you know if the application is accepted with that
Not having much luck with the London embassy with specific questions, just keep getting directed at the online application, so wanted to see if anyone has done something similar first