A very random question for this forum but I usually find the answers I'm looking for here! Trains aren't such a big think in NI, I've only been on one train journey over here and it was very much a show up and buy your ticket on the day kind of thing. I'll be travelling to Birmingham for a training course in mid December and it finishes on a Thursday around 3.30pm. I'm then going to be travelling on to Liverpool via train to stay the weekend. My question is, do these sort of journeys need booked in advance? Would the price increase if I simply bought a ticket on the day? Are these sorts of trains ever full in that they may become sold out? I'd rather not book it in advance as there is a good chance the training course will finish up earlier (or even later) than 3.30pm.