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Technically excellent, innovative design

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Our specialists at Coffey Geotechnics Ltd are at the forefront of delivering design and feasibility solutions for geotechnical, engineering geology, mining & mineral processing and geo-environmental projects.
Our engineers are the innovators.
Coffey, a Tetra Tech Company delivers technical excellence to manage complex risks for our clients – providing value throughout the asset lifecycle in the transport and property infrastructure, and energy and resources sectors. 
We provide all aspects of engineering consultancy services for clients both in the UK and across the globe with access to thousands of specialists worldwide. Coffey and Tetra Tech have been relied on for more than five decades to successfully deliver programmes in partnership with our clients to successfully deliver their programmes in partnership with clients, major contractors and other professional service providers.

In 2016, Coffey joined Tetra Tech, a leading provider of consulting, engineering, programme management, construction management, and technical services. We are now part of a team of more than 27,000 people working in 550 locations across the globe – combining the resources of a global, multibillion dollar company with Coffey’s reputation and deep expertise in the technical areas in which we operate.

The following year in 2017, the UK Tetra Tech Mining and Minerals team joined Coffey Geotechnics Ltd to provide a wider offering to clients. Both Coffey and Tetra Tech have a proud heritage of serving the international minerals industry.

Tetra Tech in the UK and Europe also includes: 
  • Tetra Tech, specialising in property, nuclear, residential, government services, energy and utilities, transport, and defence;
  • Tetra Tech International Development who design and deliver programmes that make real differences to lives and economies abroad;
  • Norman, Disney & Young specialising in making building spaces work.

It’s a strong partnership that’s supporting our growth and creating exciting opportunities.
What we do
Technical Expertise

We have capabilities in Geotechnical Engineering, Engineering Geology, Geoenvironmental Engineering, Mining Engineering and Mineral Processing. We also provide expert witness services in these disciplines. We operate up to date engineering software to enable efficient design and are invested in the BIM processes. Guided by our team of experienced senior engineers, our products are innovative but simple designs. The emphasis is on buildable and efficient design presented on clear construction drawings.

Where we work

We work on ground engineering projects across most sectors. Many of our projects are in property and transport infrastructure, but we also have a specialist mining team, tackle coastal work, conduct geoenvironmental assessments and containment design. From tall buildings through highway underpasses to mining schemes, whatever your project, we will have previously seen the ground engineering problems you are encountering and provided appropriate solutions.

View our work

We are proud to have been at the forefront of iconic projects over the years. Our engineers have influenced infrastructure across Europe, the Middle East and globally. We have been at the leading edge of ground engineering research, helped guide British, European and International Standards, and brought new techniques to the UK. Each project presents a fresh challenge, and each success is a reflection of the dedication and flexibility of our engineers.

Project Highlights

Reading Station and the Panama Ash Storage Lagoon
These projects demonstrate the wide variety of ground engineering challenges our teams face. While it is not possible to provide information here on all of the work we have undertaken, we are always happy to provide specific examples on request. 
Please visit our projects page to see some more detail about these and other key projects. After browsing there, if you have a question about our expertise, or how we can support your project, then please get in touch.   
Reading Station Grade Separation

Our team of engineers were responsible for the design of the LTP and reinforced soil wall which carried the approach ramps for this new elevated rail link.


Our engineers were on site in Panama, responsible for the third party construction quality assurance of the lining system installation.


Our engineers are at the forefront of industry practice. They regularly publish papers to keep industry abreast of their findings and experience. To read some of the publications please follow the relevant links below. If there are other papers written by our engineers that you wish to access, please get in touch
Grounds for concern: geotechnical issues from some recent construction cases. (ICE Proceedings, Forensic Engineering Vol. 170)
Innovative Geotechnical Repair Techniques, Comparative Lifecycle Assessment. TRL Published Project Report PPR889.
Grounds for concern

Eugene Gallagher, David Tonks and Ian Nettleton discuss some of their experience with geotechnical issues in recent construction cases.

Innovative Geotechnical Repair Techniques

TRL Report PPR889


We work with organisations and agencies across the spectrum in the construction industry, some of which are shown below.
Visit our Projects page to read more.