[Fastera]

Do you happen to know whether a "birth certificate" Is also accepted?

Tricky question.. In general the birth certificate in the UK is almost useless as it is used in very few situations. Many of the government operations do not accept a birth certificate as a form of ID (all interactions I have had did not) and by extension many private businesses do not as well. This is most probably due to the fact that it is not a photographic ID.
For parcels I assume this would be based on the courier's T&C regarding what is an acceptable form of ID. For example Royal Mail does not list a birth certificate as acceptable proof of ID (that being said it is different story whether the customer representative there will accept it, though I doubt it) however they do not insist on photographic ID. DPD being the complicated ones to deal with require two forms of ID if a signature is required. If not they can drop it in a local shop where you can use a bank card.

Sorry I cannot give you solid answer but in my experience the birth certificate is not used very commonly. As such it may raise more suspicion than simply going in with a debit/credit card with the name of the recipient. Perhaps it is different in different countries where the birth certificate is a more powerful document.

I appreciate your In depth reply, It's very beneficial to both myself and our SEing community.

The reason I specifically asked about a birth certificate, Is due to the fact that It can easily be manipulated. In my country, apart from a driver's license, a birth certificate holds the most Important value In terms of verifying one's ID.

Happy to share what I know

I gathered your idea and it is in fact easy to falsify, perhaps that is one reason why it is not used commonly here.