Troubles at Tesco, 2012

It was October 3rd, 2012, and all was not well at Tesco, the UK's largest supermarket chain with revenues of £64.5 billion ($104 billion). CEO Philip Clarke unveiled the first half-year profit drop in almost 20 years and, in the UK, the majors Asda and Sainsbury were closing the market-share gap, while niche players like hard discounter Aldi, with prices as much as 20% below Tesco's, and premium-grocer Waitrose were both growing fast. What did Clarke need to do to restore confidence and get Tesco back on track?