In cases of severe travel disruptions, I have had Advance tickets endorsed for travel the day after. In practice, an employee at a staffed railway station wrote and stamped something on the back of my ticket. Then I travelled the day after.
Is this endorsement necessary? For example, for todays disruption the message says:
If customers want to change their journey, tickets for travel today can be used tomorrow providing you begin your journey before 14:00.
You may use your ticket on London Midland, CrossCountry, TransPennine Express and Arriva Trains Wales via any reasonable route.
Does that mean an endorsement is redundant? Then what is the point of an endorsement at all?