Will be travelling to London in late December as a family of 2 adults and 2 older teens, will have 6 days in London. Thinking of a day trip to Bath. I have checked online about independent travel to Bath. We are staying at Premier Inn County Hall so will be close to Waterloo station. This is probably a silly question, but is there a difference between Southwest Trains and First Great Western trains? As they have separate websites, for info and ticket booking, but are they actually the same service? In other words, does it matter which one I use when the time comes to book tickets?
Another quick query, if I want to take advantage of the Groupsave 4 discount for the Off-Peak Day Return tickets, is it still cheaper to buy ahead online compared to on the day or couple of days out at the station? Thanks for any help and advice.