Knowing nothing of forensics, but having extensive experience of family history and certificates, I took the usual route.
First established fact is that David Jeffrey Bomford exists and lives in Southern Australia. He is middle-aged. Next he has Alaric Robert Hubert Bomford as a father. His mother (now deceased) was Doreen Betty Bomford (formerly Loxton. She is 31 years at his birth in 1959.
The records at her interment in 2002, state her husband is "Al" Bomford and among her children is David. These are records held at Houghton cementery, in Australia.
My reasoning (sans forensics) is this. Since we have a live David Jeffrey Bomford of Australia; at his birth, just what would the registrar have entered- other than the certificate we have seen?
The common sense question: why is a living person’s BC posted on the web? That is an invitation for identity theft. A geneologist friend of mine was incredulous that anyone would post one.