About Us

We work alongside clients to develop their strategies and take their plans forward. We have an excellent breadth and depth of expertise across our region but also the support of a global network who can help us foster even more industry-leading and innovative solutions.

Leading with Science
Learn more about Tetra Tech's high-end consulting and engineering services.

Tetra Tech is a leading provider of consulting and engineering services with 28,000 associates working across the full project lifecycle worldwide.

Our operations in the UK and Europe include more than 5,000 employees who are Leading with Science® to solve our clients’ most complex problems.

Tetra Tech’s experts in the UK and Europe work alongside clients on local, national, and international projects to deliver on their objectives by providing sustainable and resilient solutions.

From single projects to large-scale programmes, we are adept at working in complex or highly regulated environments.


Our History

Tetra Tech was founded in the U.S. in 1966 to provide engineering services related to waterways, harbours, and coastal areas. For almost 60 years, Tetra Tech has provided clear solutions to complex problems in water, environment, sustainable infrastructure, renewable energy, and international development.  

Tetra Tech operates in more than 50 offices throughout Europe with workforce of more than 5,000 technical experts who are collectively Leading with Science® to unlock sustainable development and solve complex challenges facing the UK’s built and natural environment. 

In 2019, Tetra Tech acquired professional services consultancy WYG, which greatly expanded the company’s geographic presence in the region, bringing market-leading water, environment, and infrastructure solutions to clients in the UK and Europe. This built upon the reputation already established in the region through the earlier acquisitions of NDY, Coffey Geotechnics, and Tetra Tech International Development. The addition of Hoare Lea in 2021 and RPS in 2023 continued to advance our skill sets in high performance buildings, energy transition, and digital water services. 

The facts
Tetra Tech is one of the largest and fastest growing environmental companies in the world.
Our associates are offered professional development opportunities and training.
Our highest performing individuals and project teams are recognised through an annual awards programme.
From single projects to large-scale programmes, we are adept at working in complex or highly regulated environments.
Over 1,700 students have Followed us on Gradcracker.
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