Diploma Results Presentation Deck

14 Diploma PLC Half Year 2022 Results Current trading and guidance Current trading Mindful of macro economic uncertainties ● ● ● Confident in materially upgraded April guidance • Low double-digit underlying revenue growth; expect underlying growth to moderate in Q3 Reported revenue growth a little over 20% • Accuscience expected to deliver annualised revenue of ca. £35m Adjusted operating margin at top end of the 18-19% range Cash conversion in line with financial model (ca. 90%) • Net debt/EBITDA currently expected to be ca. 1.5x by year end ● ● Actively managing supply chain, inflation and labour pressures The second half has started well ● DIPLOMA PLC

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