Where is the so called "Rail Regulator"?
Does the Office of Rail and Road actually 'regulate' individual passenger operators on this sort of late timetable change stuff? I thought that the operators (other than Open Access) were 'regulated' by the DfT although I have never understood how OLR TOCs might differ from the various other types of arrangement.
'Emergency timetables' are nothing particularly new. For example, for ongoing disruption such as after a landslip, flooding or an incident like the Carlisle Petteril Bridge derailment a new timetable could be uploaded before 2200 the day before. This has been going on for years.
Even back in BR days we had things like 'Black Days' during the leaf fall season with stations like Witley on the Portsmouth Direct line being 'non-stopped' on days when heavy rain or gales were forecast. This was obviously before modern methods of communication like the internet and social media.
I agree that the scale of such 'previous evening' changes has greatly increased though.
I have got into the habit of checking and re-checking my intended trains both the evening before and on the day ever since sites like RTT became a thing. Fortunately, being retired and having a car, I can often decide not to travel or drive instead. I realise that not everyone has those alternatives.