As I have been caught up with the published timetable of the day, I have had a look through the National conditions of travel 6/2/22 and this is what I have found.
27.3 When you make your claim, you should state the timetabled departure time of the train you intended to use for your journey and provide any tickets for the journey.
27.4 has the first mention of the published timetable of the day.
30.1 etc. etc. rescheduled from that in published timetable of the day after you have purchased a ticket or tickets. (how do you know what the timetable is as it gets changed by 22;00 the day before?).
32.1.2 by relying on your statutory rights, eg., under the consumer rights act 2015 and the rail passengers' rights and obligations as it applies in GB law. (this could be worth having a look at the way that Northern are using the published timetable of the day not to pay out delay repay).
In appendix B: we have the following. National rail timetable. published by Network Rail and provided at
www.networkrail.co.uk
Published timetable of the day: This should be available at
www.nationailrail.co.uk
Sorry for the long post but I hope that some of you can make use of some of the information.