If you run a national coffee shop chain and see Steve Pottinger on his way to one of your shops for his morning latte, a swift call to your accountant may be advisable.

The 51-year-old’s letter to Caffe Nero, in which he symbolically enclosed his loyalty card in protest at the chain not paying any UK corporation tax, has been shared thousands of times on social media – and it’s not the first time he’s had to switch brands.
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