British Citizenship for my son

[dubz90]

Hi all,

I am a British citizen (born in the uk) and am married to a Chinese national, we currently live in china where my son was born on the 16th July 2015.

Am I correct in understanding that my son automatically attains British citizenship by decent without needing to take any action myself and that I can directly apply for his British Passport?

Actually I have already submitted an application for his first British Passport and they sent me this in an email which I don't really understand:

"Thank you for your recent application for a passport for the person named above. Unfortunately
you did not enclose all necessary supporting documents.
Please send us the following documents -
your registration or naturalisation certificate.
and
A full birth certificate showing parents details for (Wife's Name)
We cannot accept photocopied documents.

Also my wife doesnt have a copy of her birth certificate and cant get a replacement.

PLease HELP!

Any advice is appreciated!

Thanks in Advance

[CR001]

Your passport and birth certificate and your childs full birth certificate showing parents names should be sufficient to apply for a passport for the child.