EU referendum, brexit and the aftermath

I’m a UK national - wife is EU, and daughter is half-half (or both, really).

I’m also resident in the UK, and they’re both EU resident at the mo (moved back to be close to her parents before baby came along, with me to’ing and fro’ing a lot).

Are you a British national by birth? If you were born in the UK to at least one British national parent, then 99.9% likelihood your daughter is also a British national. Doesn’t matter where she was born, or if you registered the birth with a British consulate abroad.

Happy to elaborate over PM if you want.
Source- used to do that stuff for a living.
PS- if she is entitled to British nationality thru you, you can just apply for her Brit passport straight away; it’s not necessary to register her birth with the UK or stuff like that. You will still need to provide original documents (apostilled and translated if they’re Polish).