BHP Billiton boss warns Brexit will lead to a "decade" of trade negotiations

Andrew Mackenzie, the chief executive of struggling mining giant BHP Billiton, has joined the chorus of FTSE 100 bosses pleading with voters to opt to remain in the EU, claiming a Brexit could result in a “decade of disruption” to trade agreements". ...In the EU, Britain helps to write rules taken up across the world that promote free trade and social good, like environmental protection. By leaving, the UK would stop being rule makers and become rule takers", Mr Mackenzie is due to say during a panel for the Centre for European Reform.