<p>Westbound District line D stock train departing from the now removed bay platform at Mansion House station.
</p><p>On the far left is a crowded westbound train - very possibly  the passengers (who realise what is happening) are somewhat peeved that another train has just gone in front of the train they are on, and that this will add a few minutes to their journeys. Such an eventuality is no longer possible.
</p>
Still image from HD video.
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