Matthew Stuart Tweedie

Arup Group Ltd. provides engineering, design, planning and project management consulting services. The company has offices across Europe, North America, Africa, Australasia and South East Asia. It offers building design, economics and planning, infrastructure design, management consulting and specialist technical services. The firm was founded by Ove Arup in 1946 and is headquartered in London, the United Kingdom.

OVE Arup & Partners International Ltd. provides scientific and technical consulting services. The company is headquartered in London, the United Kingdom.

Founded in 1978, OVE Arup & Partners Hong Kong Ltd. is a subsidiary of OVE Arup International (Holdings) Ltd. The company is based in London, UK. The British company provides environmental expertise to clients worldwide throughout the entire lifecycle of their projects.

WaterAid is an international non-profit organization that has been working since 1981 to change the lives of the poorest and most marginalized people in 28 countries. The non-profit company is based in London, UK. The British company has reached 27 million people with clean water and 27 million people with decent toilets. WaterAid India is a non-profit organization that works for clean water hygiene and sanitation. The company's vision is to create a world where everyone has access to safe water and sanitation. WaterAid works with its supporters, partners, and local communities to make clean water, decent toilets, and good hygiene normal for everyone, everywhere. The company was founded in 1981. Timothy John Wainwright has been the CEO of the company since 2017.

Part of Ove Arup Partnership Charitable Trust, Ove Arup & Partners Ltd. is a British company that provides engineering consulting services. The company is based in London, UK and was founded in 1977.

Part of Ove Arup Partnership Charitable Trust, Arup Treasury Ltd. provides business management services. The company is based in London, UK and was founded in 1990.

Part of Ove Arup Partnership Charitable Trust, Arup Riyadh Metro Ltd. is a British company that provides engineering and architectural services. The company is based in London, UK and was founded in 2014.

Part of Ove Arup Partnership Charitable Trust, Ove Arup Ltd. functions as an investment holding British company. The company is based in London, UK and was founded in 2016.

Arup North America Ltd. engages in the provision of design and consulting engineering services. The company was founded in January 30, 1987 and is headquartered in London, the United Kingdom.