BBC Radio 4 - Salt (2 part series - part 2). http://www.bbc.co.uk/programmes/b052hffg. "Steph goes on to address the issue of salt and health, hearing from a campaign group promoting the lowering of salt consumption down to 6 grammes a day through schemes such as reducing the number of holes in chip shop salt shakers."
BBC Radio 4 - Salt (2 part series). http://www.bbc.co.uk/programmes/b051rjpm. "It's easy to take salt for granted - its abundance on supermarket shelves, coupled with the development of refrigeration and freezing for our food, means we can all too readily overlook its vital and multiple role in our history. In part one of 'Salt', BBC Breakfast's Steph McGovern sets out to explain this role."