The photo ID for your child will work in conjunction with the ticket that we provide. This will allow us to check that the ticket is valid and being used correctly. You must have a rail network photo ID to be able to travel.  If you already have one then input the number in the online form - this will have 3 letters and 4 numbers (this is not the smart card number and cannot be used instead)  If you don't have a photo ID please upload a photo on the form and the team will send one out with your ticket.