I recommend trying to avoid using Trainline and just book directly through the train company instead. Multiple times, when I have booked through Trainline, my train has been cancelled and it is impossible to obtain a refund through the app unless you want to only be refunded half the price of the ticket or less, as they take off so much money off in admin fees. Even if you contact them directly to get a full refund, they will not refund the booking fee for cancelled services. While the booking fee is not generally a lot, if you get trains frequently like I do, and considering how often the get cancelled, it will really add up. Even if 1 train gets cancelled per week, you could easily be giving Trainline £30-£50 a year without even travelling. This experience has happened to be too many times now, I will not be using Trainline going forward.