I was open-mouthed watching the BBC News last night when they were given a tour of the Edgware Road signal box. It's 85 years old, and spares have to be hand-made. There's still valve-based technology there. In fact, the word 'technology' probably hadn't been invented when it was designed by some bloke wearing a doublet and hose. No wonder the trains are never on time.
Of course, this was all propaganda by TfL, trying to give spending cuts the body-swerve. But short of showing little boys cleaning out the chimneys, it's hard to imagine a stronger case being made for capital investment.