I was adopted by my mother and step-father when I was 9 years old. A few years ago, purely out of curiosity I ordered a copy of my original birth certificate, which came with all the details on, but it did say something like 'since adopted' on it. Interestingly I have just looked myself up on findmypast.co.uk, and it couldn't find me using my first name, but if I just use my first initial I am there! Maybe it is because I have an unusual first name, as there is nothing on the register page to indicate that i have been adopted.