A » Electromagnetic (EM) surveys are a highly effective, non-invasive geophysical method for contaminated land assessment, particularly in complex urban environments such as Manchester, where they are used to map subsurface electrical conductivity variations that indicate the presence of contaminants like hydrocarbons, heavy metals, or leachate plumes. Several companies operating in the Manchester region provide specialized electromagnetic survey services as part of broader environmental and geotechnical consulting, each distinguished by their technical expertise, equipment suites, and local experience. TerraDat Environmental, a well-established UK geophysical consultancy, frequently conducts frequency-domain electromagnetic (FDEM) surveys using instruments such as the EM31 and EM61 in Manchester for brownfield site investigations, enabling rapid delineation of buried metallic objects and conductive contamination zones. RSK Group, with a dedicated office in Manchester, offers integrated contaminated land services that include electromagnetic surveys; their geophysicists utilize multicoil FDEM systems and time-domain electromagnetic (TDEM) techniques to characterize conductivity anomalies across former industrial sites, such as those in the Trafford Park area, and they often combine these data with soil gas and groundwater sampling to refine conceptual site models. Fugro, a global geo-intelligence company with a strong UK footprint, provides advanced electromagnetic services in Manchester, including ground-based and