Investor Presentation

Good progress since our CMD in November 2022 ~ Profitable growth. A higher-grade business Targets EBITDA mid to high single digit CAGR Strong operating cash flow Return to positive free cash flow Focus on reimbursable contracts . HY23 progress Future focus • EBITDA up 12%¹ • Continue to improve pricing • Significant improvement in operating cash flow • Selective market focus Optimise portfolio - reviewing • Improve cash generation LSTK now only c.1% of order book • c.4% of business G 23 1. 2. Performance excellence. Results focused and delivering • Grow order book • Increase use of Global Execution Centres (GEC) • Consistent Project outcomes Increase % sustainable solutions Order book up 5%² • GEC headcount over 3,000 Sustainable solutions revenue up 20% • • Continued focus and discipline in where we bid • Continue to grow sustainable solutions • Further GEC growth Inspired culture. Creating a great place to work Improve employee engagement Lower voluntary turnover Reduce recordable safety incidents • 40% leadership female by 2030 . Employee NPS up 23 points YOY Continual focus on safety • Develop employee experience • Lower voluntary turnover • Further increase diversity across professional roles • Expand graduate intake • 35% leadership female • Continue SME recruitment (vs. 32% at Dec 2022) At constancy currency Compared to December 2022, at constant currency and excludes Gulf of Mexico labour operations business sold in March 2023 wood.

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