Government departments are being asked to switch from bottled to humble tap water for lubricating the endless meetings involved in running the Civil Service. Hot on the heels of Ken's campaign to get London's diners to insist on tap water in restaurants, this switch could save Whitehall more than £100,000 a year according to a Panorama investigation into council spend on bottled water. DEFRA, which has already made the switch, was draining a jolly......