Hi
I got DS a Zip card when turned 11. Can he use it on the train or is it only for use on the tube and buses? Is it just for free travel or do I put money on it like my Oyster card?
I have searched the TFL website for answers to these questions and tried calling their helpline but to no avail. I was left holding for 26 mins on the line and lost the will to live 
TIA