I would have thought the largest group of people where the birth certificate is biologically inaccurate is where the married mother has had an affair.
But birth certificates have always, I think, contained the legal facts. And regardless of the biological facts the husband of the mother is the legal father.
Hence the presence or absence of the unmarried father on a birth certificate being crucial to parental responsibility.
If a lesbian partner is, from birth of the child, that child’s legal parent it makes sense to have her recorded as such.
I presume what this judgement says is that a person who gives birth is, at that moment, the legal mother of the child.
Does anyone have a link to the actual judgement?