Do you live in the UK? If so, here is a cool petition you can sign.
Even if the government ignore us in terms of making laws and things, and they probably will, it’ll be an interesting experiment to see how many people use or support the availability of a gender-neutral title. I’ll be able to say “also over 357,000 people like Mx; put it on your form, Tesco Online!” etc.
So far: 5 signatures. *cough*