Hello, wondered if anyone could help. I am British, as are my parents and partner and children. For my 1st child application for passport, I sent their birth certificate, both British passport numbers from our passports. Passport came back within a few weeks. About a year ago, my 1st child was 1 year old. I have done the same for my second child. They wanted birth certificate for her. So all sent. Received an email and they want further documents. Including my mother’s birth certificate. So my child’s grandmother. I do not understand why they would want this. When I’ve held a British passport all my life and my first child didn’t require all this. They also want marriage certificate, my birth certificate, I have contacted them twice. They wearnt very helpful and said if that’s what they want, that’s what you need to send them. Has anyone had any experience of this? Have they made a mistake? Thank you.