You need to complain, immediately. First, they are obviously spreading misinformation for their own purposes. It is patently incorrect that these Thai surgeons perform the same, outmoded, outdated procedures as the NHS; both have published on their surgeries. Indeed, there is far less information on the NHS techniques than any popular private surgeon. And threatening you with the prospect care would be declined is not only immoral, but illegal. I hope you have some record of this conversation, but even if not, you still need to complain. The longer the NHS is allowed to get away with appalling and frequently illegal trans-related care (as it is now recognised in the very recently published government report [House of Commons Women and Equalities Committee] "Transgender Equality"), the worse it is for all of us. The NHS CANNOT in ANY SITUATION decline necessary, especially life saving care. Even if all staff involved know the person has NO recourse to public funds (for instance, exaggeratedly, they've just washed up on a beach, are apparently stateless, don't speak any English) they CANNOT decline care - they simply are obligated to attempt to recoup the costs of the procedure after fact, but as I assume you DO have recourse to public funds, this is another matter entirely, simply to make the point what that nurse told you is beyond rubbish.