Dear Mary: How can I lie about my age and still use my Senior Railcard?

Q. I was not brought up in England and don’t appear in Who’s Who. This means that there is no printed record of my date of birth. I’m not vain, but have good reason to believe the work I do would dry up if my age became known. (I look about 50.) The point of my writing is that I now have a Senior Railcard but hardly dare use it in case the collector comes while I am sitting with neighbours or potential clients. Twice I have pre-empted having to show the card while sitting next to such people by walking through the train on the pretext of asking the inspector a question, then showing him my ticket and railcard so he doesn’t ask me for it back at the seat. But this is unsustainable. Any suggestions?
— Name withheld, Exeter

A. Buy a Network Railcard (£30) and use that instead of your Senior Railcard.