I am looking at getting DS a zip card so that he can travel alone in and around London. The issue I have is that he's currently 10 but he's 11 at the end of August so I'll need to buy another one at that stage. He won't be travelling much alone before he starts school in Sept so just the odd bus journey. Last time he went on the bus I just swiped my Oyster Card and then got off the bus and off he went.
Should I just give him my Oyster Card for the odd trip until I get him a zip card at 11?