Domestic subsidence investigation specialist Geocore Site Investigations joined RSK in August 2019. Thirty-strong Geocore is based in Redcar, North Yorkshire, UK. Founded in 1998, the company specialises in the investigation of domestic subsidence, providing detailed site surveys with foundation inspections and drainage CCTV. Its services include trial pitting, window sampling, rotary drilling and cable percussion drilling. As part of RSK’s contracting division, Geocore’s specialist knowledge in deep ground source drilling enables RSK to increase its drilling provision and expand into new areas, such as ground-source heat pumps.