Robert Shepherd Duff

Jacobs Engineering Group, Inc. engages in the provision of a diverse range of technical, professional, and construction services to industrial, commercial, and governmental clients. The firm operates through Critical Mission Solutions, and People & Places Solutions segments. The Critical Mission Solutions provides a full spectrum of cyber, data analytics, systems and software application integration and consulting services. The People & Places Solutions provides end-to-end solutions for clients' complex challenges like whether climate change, energy transition, connected mobility, integrated water management, smart cities or vaccine manufacturing. The company was founded by Joseph J. Jacobs in 1947 and is headquartered in Dallas, TX.

Halcrow Holdings Ltd provides engineering and management consulting services. It develops buildings for retail, leisure, and housing facilities for industry and public buildings, healthcare, education, transport, telecommunications, and defence sectors. In addition, the company offers decommissioning, new build, and naval facilities in the nuclear field. The company serves transportation, water, and property markets. It was founded in 1982 and is located in London, the United Kingdom.

Aspinwall & Co. Ltd. engages in the business of providing management consultancy services. The company was founded on September 10, 1985 and is headquartered in Brentford, the United Kingdom.

Enviros Consulting Ltd. provides environmental consulting and engineering services. The firm provides integrated consulting and software solutions in areas of climate change, compliance management, development and regeneration, management systems, resource management and risk and asset management. The company was founded in 1995 and is headquartered in Wokingham, the United Kingdom.

Colin Buchanan & Partners Ltd. provides engineering and consulting services. The company was founded in 1964 and is headquartered in Manchester, the United Kingdom.

Jacobs Project Management Co. provides engineering and construction services. The company was founded in 2008 and is headquartered in Pasadena, CA.

Founded in 1972, Halcrow (Consulting Engineers & Architects) Ltd. is a part of Jacobs Solutions, Inc. that provides engineering services. The company is based in London, UK.

Part of Jacobs Solutions, Inc., GIBB Holdings Ltd. functions as an investment holding British company. The company is based in Wokingham, UK. GIBB Holdings was founded in 1989.

Part of Jacobs Solutions, Inc., Jacobs UK Holdings Ltd. provides support to holding companies. The company is based in Wokingham, UK. Founded in 2002.

Part of Jacobs Solutions, Inc., Lindsey Engineering Services Ltd. operates as a holding British company whose subsidiaries provide engineering services. The company is based in Wokingham, UK.

Jacobs U.K. Ltd. engages in the provision of engineering services. The company was founded on March 22, 1991 and is headquartered in Wokingham, the United Kingdom.

Enviros Ltd. develops climate change, energy, and waste management advisory services. The company was founded on June 26, 1995 and is headquartered in Wokingham, the United Kingdom.

Part of Jacobs Solutions, Inc., Sinclair Knight Merz (Europe) Ltd. is a British company that provides engineering and environmental consulting services. The company is based in Winnersh, UK.

Jacobs Government Services Co. provides architectural engineering and consulting services. The company was founded in 1968 and is headquartered in Dallas, TX.

Part of Jacobs Solutions, Inc., Worley Field Services Ltd. is a British company that provides construction services. The company is based in Brentford, UK. Founded in 1948.

Part of Jacobs Solutions, Inc., CH2M Hill United Kingdom is a British company that provides engineering services. The company is based in London, UK.

Part of Jacobs Solutions, Inc., Jacobs Europe Holdco Ltd. functions as an investment holding British company. The company is based in Winnersh, UK and was founded in 2014.

Founded in 1993, Halcrow International Partnership is a holding British company that provides engineering consulting services through its subsidiaries. Part of Jacobs Solutions, Inc., the company is based in London, UK.

Part of Carillion Plc, Enviros Group Ltd. functions as an investment holding British company. The company is based in Wokingham, UK.

Founded in 1989, JacobsGIBB Ltd. is a British company that provides engineering and architectural consulting services. Part of Ringway Jacobs Ltd., the company is based in Wokingham, UK.

Part of Jacobs Solutions, Inc., Jacobs E&C Ltd. is a solutions integrator with a diverse portfolio that specializes in performing in demanding data environments worldwide. The company is based in Winnersh, UK. The British company's expanding product suite helps clients plan and adapt ahead of potential threats to survive, recover, adapt, and thrive.

Part of Jacobs Solutions, Inc., Worley E&C International Ltd. is a solutions integrator with a diverse portfolio that empowers people to approach challenges differently. Founded in 1985, the company is based in Brentford, UK. Jacobs provides a full spectrum of professional services including consulting, technical, scientific and project delivery for the government and private sector. The British company challenges today to reinvent tomorrow by solving the world's most critical problems for thriving cities, resilient environments, mission-critical outcomes, operational advancement, scientific discovery, and cutting-edge manufacturing. With approximately $15 billion in annual revenue and a talent force of approximately 60,000, Jacobs develops bold, innovative solutions to address the nation’s toughest challenges and help clients across secure federal funding for projects that make our cities and communities more connected and sustainable.