I travel by train quite a lot, and would do moreso if it wasn't for the cost.
DCs have the 16-25 railcard, but as I'm not yet 60 (!!!), I can't find a railcard that would offer a 'regular' traveller any discount.
I do use Trainline to book, but am I missing a railcard that would be suitable - or is it case of 'save the planet but bankrupt yourself!!!'?