Keller Group plc

Keller Group plc is the world's largest geotechnical specialist contractor, specializing in advanced foundation solutions, ground improvement, piling, grouting, earth retention, and monitoring techniques. Founded in 1860 by Johann Keller in Germany as a provider of specialized ground engineering services, it pioneered innovations like the vibro ground improvement method in the 1930s and later adopted jet grouting and compensation grouting. Evolving from GKN plc's ground engineering division in the 1950s, it became independent in 1960, acquired its namesake in 1975, and listed on the London Stock Exchange in 1994 following a management buy-out. With approximately 10,000 employees across five continents, Keller Group plc undertakes around 5,500 projects annually, focusing on infrastructure, industrial, and environmental sectors. Its operations span North America, Europe, Middle East, Africa, and beyond, supported by key subsidiaries like Hayward Baker and Franki. In 2024, it reported revenues of nearly £3 billion, underscoring its pivotal role in enabling stable construction on challenging terrains worldwide through engineering excellence and strategic growth.