I never officially changed my surname after marriage as it's hard to do in my country unless you do deed poll. I just added my married surname in brackets which does allow me to get a bank account, mortgage under my married surname and use it professionally. It's a very English surname and when I moved back to UK 9 years ago I quite liked the sound of it. I also married in Europe where it is very common for ladies to take on their husband's surname and when I lived in europe, the embassy asked if I would like to add married name to my passport and it was easy to do.
However my maiden name is still in my passport and also the nhs has both my maiden and married names.
I am pregnant now and we have decided we would like a double barrelled surname for our child. I don't have any brothers or male cousins sharing my name so it would be nice if the next generation has my surname. My husband is also the last of his line..