Diploma Results Presentation Deck

27 Diploma PLC Half Year 2023 Results Sector revenue and profit Controls Seals Life Sciences Group Controls Seals Life Sciences Central costs Group H1 2023 £m 278.8 198.4 105.6 582.8 Revenue H1 2023 £m 64.3 35.7 20.9 (11.2) 109.7 H1 2022 £m 224.0 137.4 87.1 448.5 Adjusted operating profit H1 2022 £m 47.0 25.8 19.6 (9.9) 82.5 Change +24% +44% +21% +30% Change +37% +38% +7% +13% +33% Organic growth H1 2023 % +13% +8% +4% +10% H1 2023 % 23.1 18.0 19.8 H1 2022 % Adjusted operating margin H1 2022 % 21.0 18.8 22.5 18.8 +28% +15% (7)% +16% 18.4 Change +210bps -80bps -270bps +40bps DIPLOMA PLC

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