Ok, thanks for the replies. So, I'm most likely British Citizen by Descent, that will not change even If I have my own registration certificate issued by Home Office? Which means it is vital that my child is born in UK (not to mention the level of health care in the UK is still one of the better one...

Current Situation Me & the mother of the child is not married, the mother is not british nor settled. I'm naturalised British Citizen via the British Nationality (Hong Kong) Act 1990 (and not British Citizen by Descent). The baby is due near December, and the baby will be born in the UK via privatel...