Sub Surface Ltd

Sub Surface Ltd is a long-established geotechnical and environmental consultancy based in Preston, with regional offices supporting projects across Great Britain. The company provides ground investigation services for developments of many sizes, from small private residential extensions to major corporate and infrastructure schemes.

Its work includes desktop studies, cable and mini-percussive boreholes, window sampling, rotary drilling, dynamic probing and trial pits. The team also carries out in-situ testing and monitoring, including CBR and plate-bearing tests, percolation and soakaway tests, landfill-gas and groundwater monitoring, alongside laboratory testing of soil, rock, contamination and other materials.

Geotechnical consultancy covers foundation design, ground stability, coal-mining risk, slope stability, retaining structures, earthworks, roads and sewers. Environmental services include contaminated-land assessments, waste classification, water-pipeline risk assessments, ground-gas and groundwater risk assessments, remediation strategies and validation reporting.

The business presents itself as professional, experienced and responsive, with qualified geotechnical engineers, geologists and environmental specialists. Its documented project experience spans residential, commercial, industrial, infrastructure and sports-related developments, making it suitable for developers, consultants, contractors, public-sector stakeholders and private clients seeking dependable technical ground information.