GeoCon Site Investigations Ltd is a specialist consultancy and contracting firm offering comprehensive environmental and site investigation services to clients nationwide, across both public and private sectors. The company serves a diverse clientele, including private and housing developers, principal contractors, civil and structural engineers, architects, geotechnical designers, local authorities, Highways England, and the Environment Agency.

Founded in 2007, GeoCon has grown into a prominent independent consultant and contractor within contaminated land, civil and ground engineering, geotechnical engineering, and engineering geology, with particular expertise in investigating "Previously Developed Land" (formerly termed Brownfield) and Greenfield land for environmental and geotechnical projects.

With seven regional offices, GeoCon delivers national coverage through local teams. The head office is in South Manchester, with additional offices in London (Chiswick and Barking), Bristol, Birmingham, Sheffield, and Newcastle-Upon-Tyne. Starting with one person in a spare room, GeoCon has expanded to a dedicated team of environmental consultants, engineering geologists, and geotechnical engineers, combining a perfect balance of experience, passion, and professionalism.