Tesco Shares Slump After Profits Error

Tesco is facing a financial crisis with overstated profits of £263 million, leading to management changes and scrutiny of former executives. The grocery sector's competitive pressures have affected both retailers and suppliers. Tesco's stock has plummeted, and customer loyalty is waning. The new management must devise a strategy to regain market position and improve supplier relationships.

What is the key challenge Mr. Lewis faces in his tenure at Tesco?

What must the new boss of Tesco quickly determine to improve the company's situation?