Geotechnical & Geoenvironmental

Specialists for 20 years


Terra Firma is a trading name of TFW Group Ltd, it is a privately owned, professional Geotechnical and Geoenvironmental Engineering and Site Investigation Consultancy, which was established in 2000.

Operating from offices in Cardiff, Exeter and Portsmouth, Terra Firma covers the UK in the provision of environmental and geotechnical advice and solutions to a range of clientele from individuals to national companies.

Terra Firma as a company and as individuals’ value honesty, openness, integrity, personal excellence and continual self-improvement. We take pride in honoring our commitments and responsibilities.


We strive to provide technical and environmental services of the highest quality to our clients. Customer satisfaction is recognised as paramount to our future success.

Our Clients

Terra Firma have a wide variety of clients across a number of sectors. Here is a cross-section of our client base.