District Line is above ground. It's only the deep Tube lines like Central that don't allow bikes (although you can sometimes get away with it anyway).
And how would you know that then, Monsieur Rouleur?
@Platini started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
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And how would you know that then, Monsieur Rouleur?