Waterloo and City Line
From Frikipedia
The Waterloo and City Line is a pointless commuter-only fast track service on the London Underground.
It was introduced in order to prevent out-of-town city types from having to mingle with plebs and, given that all it does is run from Waterloo to the city, is another fine example of London Underground Logic.
ECUC
The ECUC is probably very low, as you need to be earning at least £100,000pa and prove to a member of staff that you are in control of your own faculties before boarding.

