Is it possible to purchase tickets from the machines on the platform for the following day's travel. I.E. buy this evening for travel tomorrow morning....?
don't think so, at Kings cross you get tickets at the advanced travel counter, if it's following day or after. Not even sure you get tickets on the platform but the ticket office, or the self service machines which are in the ticket office, does that make sense?
If you buy the tickets through The Trainline or directly from the train company's website you can collect them at any time from some the machines in some stations.
Well I went down to the local station and you CAN but a ticket for the next day .......but, and I quote from the touch-screen, "only after 4pm on a Sunday until Thursday"....so, no good for me then!