It’s not unheard of for a baby not be registered. There’s loads of clear info on .gov.uk
🤦♀️ Clive and Iuliia
Examples there where some countries don’t have birth registration or it wasn’t possible (war I suppose is an obvious)
There’s a whole section on what the Consulate or HC or Passport office should do - all of which I’m sure the officials in this case know. The Consulate and HC are even allowed to issue their own BC, though they must follow local law.
The U.K. will have issued passports to children who are children not babies, born in war zones years earlier. It seems very clear that there isn’t a bureaucratic nightmare here, but an escalation to a senior decision maker to decide what evidence is needed. I expect that evidence to establish place of birth could include my iPhone assigning a GPS based location to the photo I took of my baby with umbilical cord attached. Or cross referencing the view of the harbour in the background. Or getting a verifiable co-ordinate from another yacht in the same photo whose registration was visible. There will be a real person, not a computer, making that decision - I am sure.
I expect that the HC in Grenada can do it, but they need to stay very close to their diplomatic partners on how they do it.
I’m sure it’s very easy to verify that Iuliia has recently given birth. The DNA test is just one piece of the evidence, and they should have done that months ago.