Needing some advice from anyone that’s been in same situation. Last month we sent away my for my sons first adult passport (he had a child passport previous) a couple of weeks later they asked for his birth certificate as it was his dad that done application. Now today we got a letter to say he needs to counter sign the letter and send it back to them with certain documents that he doesn’t have yet ie bank statement driving licence! Can’t even find a child benefit letter in my house, so phoned them to send a letter out as it will have name and address on it, he needs 2 documents so would a letter with national insurance number be enough? Sorry if I’m rambling on abit… stressed to the max! Thanks