The Eurostar chord near Victoria as far as I know is not used by any frequent services, perhaps except for maintenance trains. I was under the impression that a train line, to be kept open, must have a regular service on it, as was the case with Newhaven Marine. However, with the most recent passengers services on the section of track being a single day Southeastern diversion I am not aware of what is keeping that chord open. Similarly, I am not certain if Fawkham Junction is technically open anymore but if it is, why? It was last used years ago and is pretty derelict now.
On a more minor level, what about small bits of track, like rarely used crossovers or empty sidings?
On a more minor level, what about small bits of track, like rarely used crossovers or empty sidings?