Book in advance and save money
Train journeys can be affordable if you book them ahead of time, that's when tickets are cheapest. Be sure to look out for 'Advance' type fares.
Raileasy always recommends booking in advance to make sure you get the best discounts - travellers can save up to 80% by booking in advance. Advance fares are released anything UP TO 12 weeks in advance, but sometimes later so check regularly for the best available price.
Advance fares may stick around long enough for you to book them a day before travel however they tend to go up in price the longer you wait. There's also a risk of them selling out before you have a chance to snap them up.
So why take the chance? Set a date and time in the future and off you go.