Keller Group
A global geotechnical engineering specialist contractor providing foundation, ground improvement, piling, grouting, monitoring and related ground engineering services.
Last updated November 4, 2026
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Overview
Keller Group plc is a United Kingdom-based geotechnical engineering company and specialist contractor. Its work addresses the engineering conditions beneath and around major infrastructure, buildings and civil engineering projects. Rather than operating primarily as a conventional building contractor, Keller focuses on foundations, piling, ground improvement, grouting, earth retention, ground treatment, structural monitoring and related specialist techniques used where soil, groundwater or subsurface conditions create construction risks. The business originated in the 1950s as the ground engineering division of GKN plc. It became a stand-alone piling and ground improvement company in 1960, and adopted the Keller name after acquiring the German company Johann Keller in 1975. International expansion subsequently shaped the group. The 1984 acquisition of Hayward Baker gave Keller a significant position in the United States, while the 1990 management buy-out from GKN, supported by Candover, preceded the company’s first London Stock Exchange listing in May 1994. Keller continued to build its international platform through acquisitions including Australian foundation specialist Franki and United States piling specialist HJ Foundation. Keller’s business is organized geographically. Its North American operations have included businesses such as Hayward Baker, HJ Foundation, Case Foundation, Bencor, McKinney Drilling, Suncoast and Moretrench. From 1 January 2020, these operations were brought under the Keller brand as regional parts of one North American company. The Europe, Middle East and Africa activities cover multiple regional markets, including Central Europe, north-east and north-west Europe, south-east Europe, France and other French-speaking markets, the Middle East, Iberia and Latin America, and Brazil. The Asia-Pacific division includes ASEAN markets, India, Australia and Austral Construction. The company has supplied specialist work for technically demanding projects. Its disclosed involvement has included grouting, structural monitoring and surveying for London’s Crossrail program, as well as foundation-related work associated with projects such as High Speed 2 in the United Kingdom and the Spirit Tower in Australia. Keller’s scale and specialization have led it to be described as the world’s largest geotechnical specialist contractor. Keller’s development has not been linear. It benefited from the North American market during the early 2000s, but undertook restructuring in 2003 in response to overcapacity and industry changes. The group was also affected by the 2008 financial crisis and the downturn in housing, prompting efforts to reduce reliance on the United States through expansion in markets including India and eastern Europe. It exceeded £1 billion in turnover in 2009 and later reported strong growth from international operations. Performance weakened in Australia in 2015, and a 2018 profit warning was followed by the company’s removal from the FTSE 250 Index. In January 2023, Keller disclosed a serious accounting issue at its Austral Construction business, describing it as a deliberate and sophisticated financial reporting fraud. The company estimated an impact of approximately £6 million on the first half of 2022 and a further £8 million to £10 million relating to earlier years. Two directors were dismissed while investigations continued, and the disclosure caused a substantial fall in the share price. Keller subsequently reported 2022 pretax profit of £56 million on turnover of £2.9 billion, with the fraud affecting the result. For 2024, the company reported revenue of approximately £2.98 billion, pretax profit of £184 million and operating profit of £205 million. In June 2025, Keller announced that chief executive Michael Speakman would leave in August for medical reasons and that James Wroath would succeed him. Keller therefore combines a long-established specialist engineering heritage with a geographically diversified operating model, while remaining exposed to construction cycles, infrastructure investment, project execution and the governance demands of a decentralized international business.
History
Keller Group began in the 1950s as GKN plc’s ground engineering division. In 1960 it was expanded into an independent piling and ground improvement company. The acquisition of the German business Johann Keller in 1975 supplied the name under which the group subsequently developed. Keller entered the United States in a substantial way through its 1984 acquisition of Hayward Baker, a ground engineering company. In 1990, the business was separated from GKN through a management buy-out supported by Candover. Keller returned to the public markets in May 1994 with a listing on the London Stock Exchange. Later that year it secured a £7.5 million German contract, described at the time as its largest single order. The group’s North American expansion contributed to profit growth in the mid-1990s, although performance was periodically affected by sterling strength and the German economic downturn. During the late 1990s Keller expanded its specialist portfolio. It developed its British concrete repair subsidiary Makers and acquired the Australian foundation specialist Franki in 1998. Makers became an important contributor to group profit during this period. In the early 2000s the United States remained a major source of earnings, but Keller restructured in 2003 in response to overcapacity and wider industry changes. The restructuring included 50 job losses, and the company recorded a sharp profit decline while Makers was written down. Makers had returned to profitability by early 2005. Keller resumed acquisition-led expansion in 2006, buying Anderson Drilling, associated with the Big Stan drilling rig, along with other British specialist firms. In 2007 it sold its social housing division for nominal consideration and acquired United States piling specialist HJ Foundation for £24.5 million. The 2008 financial crisis and housing-market downturn placed pressure on the group, encouraging it to diversify away from dependence on the United States through activity in India and eastern Europe. In 2009 Keller exceeded £1 billion in turnover for the first time. The group won approximately £30 million of work on London’s Crossrail program in 2011, covering grouting, structural monitoring and surveying. International growth supported a substantial increase in profit two years later. Results were mixed thereafter: Australian market weakness reduced revenue in 2015, although profit increased, while a 2018 profit warning preceded Keller’s departure from the FTSE 250 Index. The North American businesses were consolidated under the Keller name from 1 January 2020, replacing a more fragmented brand structure with a unified regional operating identity. Keller’s recent history has included both operational growth and governance challenges. In January 2023, the company reported a deliberate and sophisticated financial reporting fraud at Austral Construction. It estimated the effect at £6 million for the first half of 2022 and £8 million to £10 million for earlier periods. Two directors were dismissed during the investigation. Keller’s 2022 pretax profit was £56 million on turnover of £2.9 billion. In 2024, revenue reached about £2.98 billion, pretax profit was £184 million and operating profit was £205 million. In 2025, the company announced a chief executive transition from Michael Speakman to James Wroath, with Speakman departing for medical reasons.
- 2025
Chief executive succession announced
[1]Keller announced James Wroath as successor to Michael Speakman, who was leaving for medical reasons.
- 2023
Austral Construction fraud disclosure
[1]Keller disclosed a financial reporting fraud at Austral Construction, dismissed two directors and revised its expectations for 2022.
- 2020
North American operations unified under Keller
[1]Several North American businesses began operating as regional parts of a single company under the Keller brand.
- 2011
Crossrail contracts
[1]Keller won contracts worth approximately £30 million for grouting, structural monitoring and surveying on London’s Crossrail program.
- 2009
Turnover exceeds £1 billion
[1]Keller exceeded £1 billion in turnover for the first time.
- 2007
HJ Foundation acquisition
[1]Keller acquired United States piling specialist HJ Foundation for £24.5 million.
- 2003
Restructuring during industry overcapacity
[1]The company restructured in response to overcapacity and industry changes, including the loss of 50 jobs.
- 1998
Acquisition of Franki
[1]Keller acquired Australian foundation specialist Franki for £3.5 million.
- 1994
London Stock Exchange listing
[1]Keller was listed on the London Stock Exchange for the first time in May.
- 1990
Management buy-out from GKN
[1]A management buy-out separated Keller from GKN with financial support from Candover.
Products and positioning
A global specialist contractor for complex geotechnical and foundation challenges, positioned around technical expertise, project execution and the ability to deliver ground engineering solutions across major infrastructure, commercial and civil construction markets.
Geotechnical construction
Piling and foundations
Keller designs and installs piling and other deep foundation systems for buildings, transport infrastructure and civil engineering works. These systems transfer structural loads through weak or variable near-surface soils to stronger ground or distribute loads through engineered foundation arrangements.
Geotechnical engineering
Ground improvement
Ground improvement services modify the engineering behavior of soil so that sites can support structures or infrastructure more safely and economically. Keller’s specialist scope includes techniques associated with improving bearing capacity, settlement performance and construction conditions.
Ground treatment
Grouting
Keller provides grouting work to strengthen, seal or otherwise modify subsurface materials. The company has used grouting capabilities on major infrastructure programs, including work connected with London’s Crossrail project.
Engineering monitoring
Structural monitoring and surveying
The group provides monitoring and surveying services that help project teams track ground movement, structural behavior and construction effects. These capabilities are particularly relevant to complex urban infrastructure and projects carried out near existing buildings or transport assets.
Controversies
2023
Austral Construction financial reporting fraud
Keller reported that a deliberate and sophisticated financial reporting fraud had occurred at its Austral Construction business. The company estimated a £6 million impact on the first half of 2022 and an additional £8 million to £10 million impact relating to earlier years. Two directors were dismissed while investigations continued. The disclosure prompted a profit warning and a reported fall of approximately 10 percent in Keller’s shares.
Brand decisions
2020
Unification of North American brandsStrategyBackground
Keller’s North American activities had operated through several specialist businesses, including Hayward Baker, HJ Foundation, Case Foundation and others.
Action taken
From 1 January 2020, the North American businesses were branded as Keller and operated as regional parts of a single company.
Aftermath
The move created a more unified North American operating and market identity.
2008
Diversification beyond the United StatesStrategyBackground
The global financial crisis and housing-market downturn exposed Keller to weakness in the United States, where it had developed a strong earnings base.
Action taken
The group increased its focus on other markets, including India and eastern Europe, to reduce reliance on the United States.
Aftermath
Keller exceeded £1 billion in turnover in 2009 and continued to emphasize international growth.
2003
Restructuring in response to overcapacityStrategyBackground
Industry overcapacity and broader changes in the ground engineering market contributed to a sharp decline in profit.
Action taken
Keller restructured its operations, including eliminating 50 jobs and writing down its Makers subsidiary.
Aftermath
Makers returned to profitability by early 2005, and Keller resumed consideration of expansion.
1990
Management buy-out from GKNM&ABackground
Keller was still part of GKN’s industrial portfolio after developing from its ground engineering division.
Action taken
Management acquired the business from GKN with support from Candover.
Aftermath
The transaction created the corporate platform that later returned to the public markets through Keller’s 1994 London listing.
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