A »Looking for a specialist in borehole geophysics and downhole logging around London? A great place to start is the Environment Agency's list of approved contractors for groundwater investigations – they often require geophysical logging for regulatory work. You could also check the Association of Geotechnical and Geoenvironmental Specialists (AGS) directory, which many reputable surveyors use. Local consultancies like RSK Geophysics, TerraDat, or Soil and Rock Engineering (SRE) frequently operate in the London area and offer downhole logging services. Don’t overlook the British Geological Survey (BGS) – they maintain a register of contractors and can point you to experts. For a more targeted search, try “borehole geophysics London” on LinkedIn or industry forums like Geotech, where professionals often share recommendations. Be sure to ask for recent London project references to confirm local experience!