My grandson (9) has recently been begging my daughter to let him walk to school with a classmate who lives in their road and his older brother who is 11. It isn't far, but she won't let him off the leash yet. If they meet en route, they'll walk together and she'll keep a discreet distance behind. From the age of 11, my son was travelling virtually unaided between his school in Surrey and my sister's house in Sheffield every half term, and between countries at the end of term. He took it in his stride, like a lot of other boarders. Some years ago, my friend had near neighbours who were both academics who left three children ranging in age from 9 to 16 at home and went off to China for three months. They didn't seem to have any significant adults watching over them; they didn't go hungry, they came to no harm, there were no dramas, but I dread to think what official wrath would have been visited on the parents these days. Like TriciaF I was under the impression that you could legally leave a 14 year old on their own, or to babysit, but it would appear not.