miklcct
On Moderation
The ticketing system is such a mess that ticket validity can't be authoritatively answered as a yes / no question.This is not authoritative (even if it claims to be )
The IDMS (an industry standard) data also claims (or claimed, last time I checked) that Richmond to London isn't valid into London Euston, which has longstanding validity. There are other examples.
I will make a copy of an itinerary from the NRE if I use unorthodox routings (mostly because I want to have a break of journey en-route) to support my travelling in case of ticket checks.