The departures screens for London Waterloo East on the pedestrian bridge between Waterloo East and Waterloo (variously referred to as Waterloo Main and Waterloo Mainline on signs at Waterloo East). To prevent confusion between the main Waterloo station and those at Waterloo East, the platforms at the latter are lettered A, B, C and D rather than numbered as is conventional. Indeed, I'm not aware of any other station using letters as the primary platform designator, although giving letters to portions of platforms (e.g. 4A and 4B) is not uncommon.
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photo by <A HREF="mailto:cmckenna@sucs.org?subject=rail-photo at railfaneurope.net">Chris McKenna</A> 01-05-2005
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