ILR application documentation for child

Hello,

I'm applying for ILR in a month or so (Tier 1 General) and was wondering what documentation I need to submit for my children.

One child has a Tier 1 general dependant visa right now, and the other one was born in the UK and has never had a visa (we need to travel soon, that's why we're not going the citizenship route for the second child). For the first child, we will submit his passport and current BRP. For the second child, I can only think of his passport and birth certificate. Is there anything else that is required? There doesn't seem to be anything on the guidance notes, and I can't find anything on the forum here either.

Thanks in advance.

GB