I am a British citizen by birth. My wife is a Colombian national by birth and naturalized British. We have just had a child, born in Colombia, where we are currently residing.
If I understand correctly our child is considered to be British by descent.
I'm trying to figure out how best to get a passport for the child: should I do it in Britain when I am next there where, it appears, I just have to submit the numbers of my own and my wife's British passports, or do I need to do it from Colombia where, it appears, I need to submit both our birth certificates, our marriage certificate and a whole lot more.