So I'm the petitioner for a K-1 Visa with my partner who resides in the UK. Our application has been approved by USCIS, then passed through NVC, then landed in London. He already did his medical, got his police acro, and is about to file the DS-160 and schedule for the actual Visa Interview. This is where we're freaking out a little. We know the i-134 form is needed at the interview, but I, the petitioner have received no letters since NVC let us know it was shipped off to London. Where, when, and how do I even file that in order for my fiancee to have a copy of it with him when he goes to his interview if they do not receive it by the time his interview happens? This is what we're worried about. That they won't get it and deny us or prolong the visa process.