Tesco overstated its profits by £263 million — and the new CEO had to confess it

Tesco was Britain's largest supermarket chain and a retail giant. In September 2014, its new chief executive Dave Lewis, only weeks into the job, announced a shocking discovery: the company had overstated its expected profits by £263 million. The overstatement came mainly from booking payments from suppliers earlier than they should have been recognized — pulling future income into the current period to make the numbers look better.

The revelation was a bombshell for a company that had long been seen as a well-run, dependable retailer. It emerged that the aggressive accounting had built up over time under the previous management, as Tesco struggled with falling sales and intense competition from discount rivals like Aldi and Lidl. The profit warning wiped billions off Tesco's market value and shattered its reputation for reliable management.

The fallout was severe. The UK's Serious Fraud Office investigated, and several former Tesco executives were charged with fraud (they were later acquitted at trial). Tesco paid a £129 million penalty to regulators and a £100 million compensation to investors, and it spent years rebuilding its business and its reputation. The scandal turned a national retail champion into a cautionary tale about the pressure to make the numbers look right.