Made by Shanghai Zhenhua Heavy Industries Company (ZPMC), each crane stands taller than either the London Eye or the arch of the new Wembley Stadium.

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Their route will take them from Whitehall past Trafalgar Square, through Admiralty Arch and straight on to the official London residence of the British sovereign.

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They came for a variety of reasons, including the amount of available space, particularly in the Bermondsey railway arches that support the London Overground (five of the six are housed beneath an arch).

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