Hi, Monica,
The adoptive mother wrote to the registers office in 1932 asking for a birth certificate of Mona Julia Scott, born 2 April 1916 at Highgate. I am sure that's what she thought the child's name was. The answer, of course, was that they could find no birth registration by that name and suggested at that time that they legally adopt which I guess they hadn't before. Then a new birth certificate was supplied in the adoptive name.