Terra Firma Ground Investigation

Terra Firma Ground Investigation provides specialist ground investigation and ground-engineering services for projects ranging from domestic work to major infrastructure. Its work covers site and ground investigation, geotechnical advice, foundation and retaining-wall design, geohazard assessment, instrumentation and monitoring.

The company also delivers water-well and water-abstraction projects, offering an in-house service from feasibility and borehole design through drilling, well development, testing, commissioning, treatment and handover. Existing supplies can be reviewed, maintained, remediated or decommissioned, with support for domestic, commercial, potable and grey-water systems.

For renewable-energy projects, TFGI designs, drills and commissions closed- and open-loop geothermal systems, including grouting, pump testing, regulatory support and independent certification. Its broader ground-engineering work includes micropiling, minipiling, ground stabilisation, infilling and compaction grouting, particularly where cavities, sinkholes or ground movement create additional risk.

Projects are supported by directly employed staff, Engineering Geologists and company-owned drilling plant. Demountable and cut-down rigs help the team work in difficult-access locations, while its wider fleet supports investigation, drilling, instrumentation installation and monitoring. TFGI works with homeowners, developers, contractors, consultants, public-sector organisations, insurers and legal professionals, providing practical advice as well as detailed reporting and expert opinion.