I am of an age where I can remember our country trains not having toilet retention tanks. You could peer down the toilet bowl at the train tracks below and see the bluestone track bed rushing past. There were signs in the toilets requesting that you did not use the toilet while the train was at a station. This is the type of sign that was to be seen in Australian trains.
While London's Tube train service may be the envy of many countries and people, how sophisticated is England's rail system? Not too advanced, it would seem, as trains dump human waste onto the train tracks at one of London's major stations, Liverpool Street. Yes, you read that correctly. This is happening in the first world in 2013. Extraordinary! I don't want to come back in my next life as railway track worker in London. To make it worse, this happens in a covered area, so weather has little effect in breaking down the solids. Unbelievable. Short article here.
For no good reason, here is a photo of the rather nice looking Liverpool Street Station from www.edinphoto.org.uk.