Diploma Results Presentation Deck

13 Diploma PLC Half Year 2023 Results Financial Capacity Half Year ended 31 March Current Facilities Currency USD USD GBP Multi Type Term Loan Term Loan Term Loan RCF Total Facilities at 31.03.23 Cash & undrawn facilities: Amount $110.5m $66.0m Headroom to leverage covenant: GBP equivalent £89.3m £53.3m £45.3m £359.7m £547.6m £390m £555m ● Facility maturities extended to December 2025 ● Reviewing longer-term financing structure Pension in surplus • 70% of drawn debt interest hedged (blended 3% + spread) • 24 month rolling FX hedging programme (6 months 100% hedged) Prudent balance sheet management DIPLOMA PLC

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