Diageo Results Presentation Deck

DELIVERING SUSTAINABLE LONG-TERM GROWTH Financial/legal appendix: Definitions and reconciliation of non-GAAP measures to GAAP measures Diageo's strategic planning process is based on certain non-GAAP measures, including organic movements. These non-GAAP measures are chosen for planning and reporting, and some of them are used for incentive purposes. The group's management believes these measures provide valuable additional information for users of the financial statements in understanding the group's performance. These non-GAAP measures should be viewed as complementary to, and not replacements for, the comparable GAAP measures and reported movements therein. It is not possible to reconcile the forecast tax rate before exceptional items to the most comparable GAAP measure as it is not possible to predict, without unreasonable effort, with reasonable certainty, the future impact of changes in exchange rates, acquisitions and disposals and potential exceptional items. Volume Volume is a performance indicator that is measured on an equivalent units basis to nine-litre cases of spirits. An equivalent unit represents one nine-litre case of spirits, which is approximately 272 servings. A serving comprises 33ml of spirits, 165ml of wine, or 330ml of ready to drink or beer. Therefore, to convert volume of products other than spirits to equivalent units, the following guide has been used: beer in hectolitres, divide by 0.9; wine in nine-litre cases, divide by five; ready to drink and certain pre- mixed products that are classified as ready to drink in nine-litre cases, divide by ten. Organic movements Organic information is presented using pounds sterling amounts on a constant currency basis excluding the impact of exceptional items, certain fair value remeasurements, hyperinflation adjustments and acquisitions and disposals. Organic measures enable users to focus on the performance of the business which is common to both years and which represents those measures that local managers are most directly able to influence. Calculation of organic movements An explanation of non-GAAP measures, including organic movements, is set out on page 76 of Diageo's Annual Report for the year ended 30 June 2022. DIAGEO 37 Preliminary Results Fiscal 23 Continued on the following page

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