Hey all. Does having dual nationality bar you from entry? I was born in Spain on a U.S naval base. My Father is American and my Mother is Scottish. I have lived in Scotland for the past 25 years(excluding a few months abroad living/working in 2012) and the only valid passport that I have is a British one. I do have have an out of date American one that is very old and has the cuts in the corners. I have searched high and low for my birth certificate and I cannot find it. Its an American birth certificate.Also it is proof of birth abroad.An American birth certificate detailing that I was born abroad. Will I need the certificate to progress through application? Best Regards. C.Morgan.