The legal definition of stillbirth is:
The Stillbirth Definition Act (1992) states: "any ‘child’ expelled or issued forth from its mother after the 24th week of pregnancy that did not breathe or show any other signs of life should be registered as a stillbirth."
Such stillbirths are recorded in a separate register - which is NOT on public view.
Only the parents (who must be named on the register) can order a copy of the certificate or, if they are deceased, a brother or sister can apply.
Before 1927 no such register existed.
Parents would often not bother with registering a birth followed by a death, because they then had to apply (and pay for) 2 certificates - Birth and death.