I am a British citizen who has recently moved to the US with my American wife on a K3 visa.

We are concurrently applying for my permanent resident status via the I-130 filing which, until recently was being processed at the NVC. The NVC has completed it's part of the process and passed our filing on to the consulate in London as we elected not to adjust status in the US (we were advised that this was far quicker).

My question is: Can my filing be processed at the US consulate in London if I now reside in the US and not the UK?

As the NVC passed our filing along with our US address to the London consulate with no questions asked, I assumed there was no problem. However, I have just read that I have to be resident in the UK to use the London Consulate.

Any advice from people who have also done or are doing this is especially welcome.

You are still a resident of the UK, because you are in the USA in a K-3 visa and do not have a green-card yet.

With the K-3 you either Adjust status in the USA abandoning the CR-1/IR-1 visa process, or wait for the I-130 to continue to the consulate or embassy in your home country and then travel back home to interview for the CR-1 or IR-1 visa depending on length of marriage.

Thank you very much. That's what I thought, but there is just so much conflicting information out there!