As campaigners go after Nando’s, is the chain in mild, medium or hot water?

The casual dining chain Nando’s came under pressure recently after one of its suppliers was accused of dumping waste into the River Wye. Celebrities including Chris Packham, Dame Joanna Lumley, and Dominic West signed an open letter from River Action UK demanding that the company meet with environmental charities to discuss its approach to sustainability. [...]