Apparently nobody here knows what to do with someone who is married and doesn't share a last name with their spouse.
I never had any issues with the fact that I kept my maiden name in the States, but it has raised eyebrows and led to some bizarre assumptions on several occasions here (banks, leasing agency, landlord), most recently with my local surgery and NHS. They've called at least 3 times to confirm that, yes, I am married, and yes, I don't share my husband's (and son's) last name, and no, I don't mind that you can't put me down as a Mrs. in the system because our names don't match (I've never even used the title of Mrs. anyway)
It seems like a strange fixation for a place that seems far more tolerant and welcoming towards unmarried partners than in certain parts of the U.S. *shrug*