Geotechnical & Ground Investigation Services in London

Geotechnical & Environmental Expertise Covering London & Surrounding Areas 

Development in London requires a highly specialised approach due to the city’s complex geological strata, most notably the London Clay formation. This over-consolidated clay presents specific challenges for foundation design, tunnelling, and deep excavations, requiring precise geotechnical data to manage settlement and heave risks. 

In the dense urban centre, we specialise in Basement Impact Assessments (BIA London), ensuring that subterranean developments do not adversely affect local groundwater flow or the structural integrity of neighbouring buildings. Additionally, our team provides comprehensive Phase 1 Environmental Assessments and WAC Testing to manage the legacy of urban contamination and facilitate efficient waste disposal. We also address localised risks such as Radon in London, providing the monitoring and protection advice necessary for building regulation compliance in affected boroughs. 

Key areas of expertise include: 

• Trial Pits: Specialist expertise in hand-dug and machine-excavated trial pits, essential for foundation inspections and identifying buried services in congested urban London sites. 
• Rotary Drilling: High-spec rotary drilling services for penetrating deep into the London Basin, providing the technical data required for major infrastructure and high-rise developments. 
• Soil Sampling: Comprehensive soil sampling and laboratory testing, including chemical analysis for WAC testing and geotechnical testing to determine the parameters of London Clay. 
• Window Sampling: Rapid, low-impact drilling using tracked percussive rigs, ideal for restricted-access London sites, courtyards, and basement projects where space is at a premium. 
• Cable Percussion Boreholes: The industry-standard method for deep investigation into London’s alluvial deposits and clay strata, providing high-quality samples for sophisticated foundation and piling design.