We came back from holiday last week and I went up to the border control counter with DS (4) and DN who is nearly 17 and has lived with us for 3 years. The agent asked me whether he was my child because he has a different surname, so I explained he was my nephew. She wanted to know whether he was traveling with his parents and I said no, he was traveling with us. So she asked where his parents where and I had to say, they are deceased, he lives with us. So then she asked for our legal guardianship documents, which we don't have. I was really embarrassed as was DN as we don't talk about his parents (don't blame me for this - it was all very deeply buried when I came into the picture 3 years ago). He is over 6 foot tall and quite able to stand up for himself.
She advised me to travel with proper documents next time. AIBU to think this is a bit strange, seeing as he could have gone through on his own without problem?