Diageo, the UK-based distiller known for brands like Johnnie Walker whisky and Guinness stout, is making significant changes to its leadership team. Under the direction of new CEO Dave Lewis, the company will see the exit of several top executives, including Ed Pilkington, who was the North America chief marketing and innovation officer, Hina Nagarajan, the president for Africa, and Louise Prashad, the chief human resources officer. This restructuring reflects Lewis's commitment to revamping the company, as he is recognized for his decisive and transformative leadership style, earning him the nickname 'Drastic Dave.' The swift changes indicate Diageo's urgent need for revitalization amid ongoing struggles.