Keller Group plc (LSE:Â KLR) is a large independent geotechnical solutions specialist. It is listed on the London Stock Exchange.
The company was established in the 1950s as the ground engineering division of GKN plc. In 1960, it expanded into a stand-alone piling and ground improvement company and, in 1975, it acquired the German company Johann Keller and took on that name. In 1984 Keller bought Hayward Baker Inc., a US ground engineering business. In 1990 it was the subject of a management buy-...