Re-reading my Clue 4, and seeing the latest crop of answers, I think I should try to clarify what I meant by "approach from five routes".
Here's a re-cap of clues so far, with modification made to no. 4
1: This station is outside the TfL Fare Zones.
2: It is on a 25kV electrified line.
3: Two TOCs use the tracks through the station, but only one TOC stops here.
4: This station is located at a junction. Passenger trains can approach the station from five different directions, as shown on
this diagram from the National Rail website.
e.g. if the answer were Rugeley Trent Valley (which it isn't), in this context trains could approach from four different directions, and do not necessarily have to stop at that station.