Keller Group plc is the world's largest geotechnical specialist contractor that designs and constructs ground engineering solutions for infrastructure, energy, industrial, commercial, and residential construction projects; its core services encompass ground improvement, grouting, deep foundations including piling, earth retention, marine works, instrumentation and monitoring, and environmental remediation. The company operates in over 40 countries across six continents, serving clients such as contractors, developers, and public sector bodies with sustainable techniques that minimize material usage, carbon emissions, costs, and construction time. Founded in 1860 and headquartered in London, England, Keller Group plc employs approximately 9,000 staff and generates annual revenue exceeding £2 billion from around 6,000 projects worldwide. Recent developments include the launch of a multi-year share buyback programme with an initial £25 million tranche completed in the first half of 2025 followed by a second £25 million tranche in September 2025; interim results for the half year ended 30 June 2025 reflecting strong performance; and a leadership transition with long-serving CEO Mike Speakman stepping down and James Wroath appointed as incoming CEO.