Flying to Belfast International from Southampton. As we will have luggage in the hold, passports will be needed. Our passports expired 25 years ago so new ones needed. I don't know what surname to use on passport. I was born before 1983 so I know I need my full birth certificate. So that has my maiden name, I married and divorced, I then re married. So I have a maiden name, I never changed driving licence, or bills or bank to second marriage name. All my documents have first marriage name on. Therefore if any other documents are needed they are all in first marriage name. Do I apply under first marriage name.