Bit of a teaser, it’s quite easy to buy a ticket from an online retailer and say you have a railcard of some description when you don’t. So, do I need to have a valid railcard when I buy the ticket or on the day of use? My thought is that my railcard has expired, but I want to buy an advance ticket that is cheaper with the railcard, so can I buy the ticket now saying I have a valid railcard when I don’t, but buy the railcard sometime before the day of travel for the ticket to be valid?