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The camera over the finish line is at the top of this crane — complete with yet more cabling...
Because the Tour is always on the move, the technical infrastructure has to assembled and then taken apart and reassembled again at breakneck speed to be ready for the next stage. Terreaux has two teams of 25 engineers working in tandem — while the London stage is still taking place, one team had already gone ahead to start work on the next stage.
The team remaining behind in London start disconnect after the last TV broadcast around 8pm, and then take the ferry back across to France to start everything again.
Here, riders race down The Mall.
Terreaux said after the Olympic Games and the World Cup, the Tour is the most technically demanding sporting project across the world — and of the 600 events he oversees each year, the Tour is the hardest.
For example, as well as 25 connections at the start village, there are also 700 timer points on the race from the start to the finish which need to be connected. In one of the stages this week, a timing point was needed on a motorway where no phone lines existed. The solution was perhaps a candidate for the world's longest extension cable, as BT had to run a phone cable overland for 2km — from a nearby farm.