Hmm, I've just been asked for this info again, despite showing them all when my dc started school. They are in y 5, 4, 2. I've recently shown it already for my reception aged child. I had to fill in a form asking what country they were born in and their nationality. This has all been done before.
Also, I've recently applied for DLA for my dc. I've been asked to provide my passport details (I have dual citizenship, but I was not born in the uk and have an obvious accent. All info has already been provided on the original form, not quite sure why they have asked again? It's annoying as they have lost the copy I had certified and I need to do it all again.