Boots and Marks & Spencer yesterday joined the Mail's rallying cry to Boris Johnson to end the 'pingdemic' madness crippling the economy. They were among dozens more business leaders and entrepreneurs backing our open letter to the Prime Minister, which demands an end to self-isolation rules for all double-jabbed people. It means nearly 50 top bosses representing and employing millions of hospitality, retail, food supplies, manufacturing and transport workers have now joined the campaign. The new signatories to the Mail's letter include M&S boss Steve Rowe (pictured), Boots chief Sebastian James, Caffe Nero's Gerry Ford, former Sainsbury's boss Justin King and the executive board of haulage firm Eddie Stobart Logistics