The Birth Certificate has a Crown Copyright stamp in the middle of it. You do not own it, Her Majesty The Queen does. The Crown Copyright Reserved commenced on 1 July 1912, The Copyright Act 1956, The Crown Copyright is now defined in section 163 of the Copyright Designs And Patents Act 1988, The Statutory Register and Records, Birth Marriages Death Land Title and Company Registers. So now you know that the Birth Certificate is not yours. but hold on, my Name(s) and Surname is on that Document.
Now this is where it gets very interesting. Your Birth Certificate has Name(s) in the top left side followed by the word “AND” and then Surname. Your Name is what you were given at Birth by your Mother or Father or Both. Your real living name.