Inside The Bunker: Europe’s most secure data centre

The Bunker, near Sandwich in Kent, is an unassuming place, as the name implies, it’s what goes on underground that is of interest. However, there are outward signs that this is a slightly unusual place: a barbed-wire topped fence surrounds the premises, on top of a green metal container sits an enormous exhaust pipe. To enter, I’m required to show my passport to security.