Last night, at 0100, a special train left Lillie Bridge depot. Bracketed by L24 and L26, it was a very different configuration from that normally seen by passengers (not least because it included Sarah Siddons, the heritage locomotive), but then many of the Underground’s out-of-hours are. Having reached Earl’s Court at 0135 (via Olympia), this particular configuration then ran via the District line to Edgware Road before proceeding to Baker Street. It was at Baker Street that ...