In reply to colina:
It being the Daily Fail and all, if that were the father being as carefree with the kid then the outrage would be monufookingmental!
If the route requires her to wear a helmet then why not the young 'un?
As others have suggested... I wouldn't feel safe doing this without a proper harness.
However, not my kid and I'm pretty sure I've done stuff with my lad that others would frown upon.