I'm trying to book train tickets from Edinburgh to London, we have a child who just turned 4. Whenever I go to reserve seats I'm given the option to reserve only 2 seats and not one for the child who will travel free.
How do I reserve 3 seats? One option that works is that I select Child's age to be 5 and then I'm given an option to reserve the third seat but obviously I have to pay child fare then when my child can enjoy free travel. I'd rather pay the child fare and guarantee a seat if its more trouble to get a seat right when we board.
I have tried at TheTrainLine and VirginTrains websites so far.