You will need the Thai BC translated in to English then Submitt the paper work both you and your partners BC's all translated if need to be..
You DO NOT NEED yo be married ..I did this with both my Children the British Conulate section were very good all done and sorted in less than a 3 weeks..Birth registration certs and UK passports .. you just have to show you are a couple in a civil partnership..
correct ..I dont show anymoney .. Grace has done mine for four years.. at a fee less than 20k.. like afew guys who do the same.. Not really talking out of my arse as you put it..was just trying to highlight some of the truth about the 800k.. it is the legit way of doing it ..but this is Thailand there is always an alternatvie.. as you are obviously aware..
800,000 baht in a Thai bank account thats about it..non of these fancy documents.. I've been on retirement now 4 years no hassle..funds in bank will suffice.. and Grace the agent..life saver..👍👍