Four Profit Warnings, a $625m Mandate, and Now a Departing GB MD. What Diageo’s Restructuring Actually Looks Like Two Months Before It Has to Explain Itself.

For most of 2026, the Diageo restructuring has existed in the conditional tense. Dave Lewis signalled intent. He hinted at recalibration. He indicated a strategy update would come in August. The language was careful, the specifics were withheld, and the market was told repeatedly to wait for the Capital Markets Day on 6 August for the detail.

Last week the conditional tense ended. The Financial Times reported that Lewis has instructed his executive committee to cut headcount and costs in their departments – not as a future intention but as an active instruction, with an internal announcement on the scale of the job losses expected within days. Diageo confirmed the departure of Barry O’Sullivan, managing director of its largest single market, Great Britain. He is being replaced by Marc Woodward, a Unilever veteran and former colleague of Lewis’s, who joins in September.

The distinction matters commercially. A signalled restructuring is a market expectation that can still be shaped by what gets announced on the day. An active restructuring is already determining who has a job, which teams survive, and what the organisation looks like before the strategy update has been delivered. By the time Lewis stands up on 6 August, the most consequential decisions may already have been made in practice, with the formal presentation serving primarily to explain decisions rather than announce them.

How the restructuring actually unfolded