Completely agree about train companies being a waste of space. In fact this applies also to all the utility companies to a certain degree, but let's not go there !!!!!
I recently tried to book a trip to Blackpool in July for 2 adults, travelling midweek and returning at the weekend. A friend had a good look for us online, but was only able to come up with something around £92 each. So we went to our local railway station (Weston super Mare, i.e. a seaside resort) and asked what trains were available. To the dismay of me, SWMBO and the ticket clerk there was nothing available to get us from W-s-M to Blackpool that could be booked in advance. Rather than fork out £180, we have now decided to go in SWMBOs Smart car, and will probably be able to do the return trip on a single tank of gas.
Your mileage may vary !!!!