Sandberg is an independent private professional partnership founded in 1860 providing consultancy, quality management, testing and inspecting services on construction industry materials, practice and processes throughout the world. National and international clients include consulting engineers, architects, surveyors, government and public authorities, civil engineering and building contractors, property developers and managers, lawyers and manufacturers and suppliers of building materials.

Sandberg LLP places a high value on client confidentiality, following a code of conduct in accordance with the Association of Consulting Engineers of which the firm is a member. Sandberg were one of the first construction materials related laboratories to received UKAS Testing accreditation in May 1985 (by the UKAS fore-runner NATLAS). Its laboratories now have UKAS Testing accreditation for a wide range of sampling and testing services both in the laboratory and on site. Sandberg is also a corporate member of the Institute of Expert Witnesses.