If the OP doesn't mind, I'd like to tag another related question onto this thread catering for my specific situation. All of my documentation is in my maiden name, and I haven't started using the married name, but am trying to determine the best time to change names legally, as I will likely want to have one family name once we get around to having children.
I have a FLR(M) BRP valid until Jan 2015, at which point I will apply for ILR under the old rules. After receiving ILR, I think I will be able to apply for citizenship pretty much straight away (based on my PSW visa from Feb 2012-- as last I checked, time on a T4 didn't count towards residency, but PSW did, right?).
However, my US passport expires in May 2015. I will certainly have to renew this prior to applying for ILR, and will likely do so sometime around Oct 2014. If I decide to renew in the married name, I would then have to apply for a new FLR(M) BRP, wait for ~4 months to receive this (Jan-Feb 2015), then apply for ILR straight after, thus really restricting my ability to travel in this time frame. To save on hassle/stress/time/frustration, I would like to renew in my maiden name. However, I have questions regarding the implications of this:
1. When applying for ILR, is this also issued as a BRP, and therefore have to match my US passport?
2. When applying for UK Citizenship, does the name used for that have to match up with both the BRP and US Passport?
3. If applying for UK Citizenship in my maiden name, how easy(cost, time, etc) is it to change to a married name once I decide to do so?
4. If applying for UK Citizenship in the married name, how does this affect:
a) US identity (passport, drivers license, SSN/tax info, banking details, etc)
b) UK identity (drivers license, NIN/tax info, banking details, lease/bills, etc)
I guess this was sort of a long-winded explanation, but mostly, does anyone have a recommendation on the easiest path forward in this instance?