Savanakhet was recommended by the university. I think Vientianne require a thai police check and Penang requires both home and Thai police checks.... I haven't got an issue with getting the Thai one but it's the turn around time and I want to get working asap.
Update regarding this. I returned to Bangkok without the visa. HR phoned the MoE to get said paper. The MoE said they can't issue it without the visa. I'm in a catch 22... Any advice?
Ok, thank you guys. I have communicated this and the fully competent HR thinks I need a non b first for this letter to be issued. Can anyone tell me what it is called in thai? I'm not sure if apples suggestion is correct