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Data travels through hair-thin fibreglass wires, often grouped in pairs and protected by different layers of plastic and copper depending on how close the cables are to the shore.

"I think if you call an album Gary, and you write a song about a fibreglass gorilla, you're out in the open, in terms of someone's going to say something like that," the singer responds.

Made of fibreglass they are covered with a tough epoxy resin, designed to withstand years of hammering by the elements.

Paul buys kits with the fibreglass skull, the teeth and latex covering to build the Chewbacca head.

They are often homemade, constructed using fibreglass and plywood.