Press Association: A Swiss billionaire has stepped in to save plans to create the world’s largest marine reserve from public spending cuts, it emerged today. Ministers are in talks over a £3.5 million deal for America’s Cup-winning yachtsman Ernesto Bertarelli to fund the policing of the zone around the British-owned Chagos Islands. The Marine Protected Area (MPA) will cover some quarter of a million square miles of sea around the archipelago in the Indian Ocean and include a "no-take" reserve …