Diageo CEO Dave Lewis Plans Executive Team Overhaul

Sir Dave Lewis, CEO of Diageo, is planning a significant restructuring of the company’s executive team, signaling a swift move to reshape the world’s largest spirits maker. The changes aim to address a perceived “fat and happy” culture within the organization and revitalize growth during a period of market challenges.

Lewis’s Vision for Change

Appointed as CEO on January 1, 2026, Lewis is reportedly looking to replace several members of Diageo’s 14-person executive committee . The Financial Times reported that he intends to implement a “wholesale change,” potentially eliminating entire layers of management . Diageo declined to comment on the report.

Background and Prior Experience

Lewis brings a wealth of experience to Diageo, having previously served as Group CEO of Tesco plc from 2014 to 2020, where he led a significant business transformation. Before Tesco, he spent nearly three decades at Unilever in executive roles focused on marketing and business performance . He also held the position of Chair of Haleon until December 31, 2025, and remains a non-executive board director of PepsiCo Inc. .

Challenges Facing Diageo

Lewis’s appointment and the planned overhaul come at a critical time for Diageo. The company is navigating challenges including tariff hikes in the United States, its largest market. He is known for his cost-cutting approach, earning the nickname “Drastic Dave,” and is tasked with revitalizing brands like Johnnie Walker whisky and Guinness .

Market Reaction

Following reports of the planned executive team changes, Diageo shares rose 1.8% to 1,813 pence on February 20, 2026 , indicating investor confidence in Lewis’s strategy.