Introduction
The UK construction industry is a vital pillar of the economy, contributing over £110 billion annually and shaping the nation’s infrastructure, homes, and commercial spaces. As of May 2025, identifying the leading construction companies helps stakeholders understand who’s driving major projects. This article presents the top 20 construction companies in the UK for 2025, ranked by the total value of their projects, as reported by Barbour ABI in April 2025. These firms are at the forefront of innovation, sustainability, and economic growth, delivering projects from high-speed rail to urban regeneration.
Top 20 Construction Companies
| Rank | Company Name | Total Project Value (£) | Number of Projects |
|---|---|---|---|
| 1 | Kier Construction | 2,914,790,006 | 104 |
| 2 | Balfour Beatty Group Limited | 2,851,840,160 | 39 |
| 3 | Multiplex Construction Europe Limited | 2,180,000,000 | 7 |
| 4 | Morgan Sindall Plc | 2,175,234,689 | 133 |
| 5 | BAM Construction | 1,675,076,269 | 56 |
| 6 | Bowmer & Kirkland Limited | 1,472,702,349 | 55 |
| 7 | Bouygues Travaux Publics-Murphy Joint Venture | 1,344,687,196 | 1 |
| 8 | Mace Limited | 1,289,854,210 | 25 |
| 9 | Wates Construction Limited | 1,281,204,148 | 48 |
| 10 | Winvic Construction Limited | 1,265,127,495 | 32 |
| 11 | Galliford Try Construction | 1,263,668,245 | 75 |
| 12 | Willmott Dixon Holdings Limited | 1,134,463,084 | 74 |
| 13 | Aecom | 1,131,534,420 | 27 |
| 14 | Vinci Construction UK Limited | 1,095,474,568 | 55 |
| 15 | Graham Construction Limited | 989,832,500 | 23 |
| 16 | John Sisk & Son Limited | 905,776,715 | 11 |
| 17 | Hill Partnerships Limited | 771,246,804 | 22 |
| 18 | Skanska UK | 737,856,000 | 8 |
| 19 | HG Construction | 693,313,500 | 12 |
| 20 | McLaren Construction Limited | 653,151,000 | 13 |
Company Overviews
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Kier Construction
Kier Construction leads with a diverse portfolio spanning infrastructure, building, and civil engineering, delivering projects like Hinkley Point C and Luton DART.
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Balfour Beatty Group Limited
A global leader, Balfour Beatty excels in major infrastructure projects like HS2 and maintains 21,000km of UK roads, emphasizing sustainability.
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Multiplex Construction Europe Limited
Multiplex specializes in high-profile commercial projects like 50 Fenchurch Street, known for precision and urban regeneration.
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Morgan Sindall Plc
Morgan Sindall drives rail, housing, and regeneration projects like the Tideway Super Sewer, with a focus on community impact.
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BAM Construction
BAM Construction pioneers sustainable building with innovations like 3D printing, delivering schools and offices.
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Bowmer & Kirkland Limited
A privately-owned firm, Bowmer & Kirkland excels in industrial and leisure projects, maintaining strong regional ties.
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Bouygues Travaux Publics-Murphy Joint Venture
This joint venture combines global expertise with local knowledge, delivering large-scale infrastructure projects.
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Mace Limited
Mace is renowned for iconic projects like The Shard and excels in project management and consultancy.
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Wates Construction Limited
Family-owned Wates focuses on education, defense, and public sector projects, prioritizing social value.
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Winvic Construction Limited
Winvic specializes in logistics and industrial developments, delivering efficient and innovative projects.
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Galliford Try Construction
Galliford Try thrives in highways and water management, leveraging partnerships for sustainable outcomes.
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Willmott Dixon Holdings Limited
Willmott Dixon leads in fit-out and public sector projects, particularly in education and leisure.
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Aecom
Aecom combines design and consulting with construction management, contributing to complex infrastructure projects.
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Vinci Construction UK Limited
Vinci delivers hospitals and transport infrastructure, bolstered by its 2025 acquisition of FM Conway.
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Graham Construction Limited
Graham is versatile in building and civil engineering, excelling in education and healthcare sectors.
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John Sisk & Son Limited
A historic firm, John Sisk & Son delivers high-quality commercial and infrastructure projects.
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Hill Partnerships Limited
Hill Partnerships focuses on residential and mixed-use developments, contributing to urban regeneration.
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Skanska UK
Skanska is a global leader in sustainable construction, known for projects like Battersea Power Station.
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HG Construction
HG Construction is a regional contractor specializing in building and civil engineering, focusing on quality.
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McLaren Construction Limited
McLaren Construction delivers complex, high-value projects with innovative approaches in commercial sectors.
Why These Companies Lead
These firms stand out due to their ability to secure high-value contracts and deliver diverse projects. They embrace digital tools like Building Information Modelling (BIM) and prioritize sustainability through low-carbon materials and modular construction. Despite challenges like rising costs and labor shortages, their resilience and innovation align with national priorities like net-zero goals.
Looking Ahead
With £40.8 billion in contracts secured in 2024, the UK construction sector is poised for growth in 2025. Projects like HS2 and renewable energy infrastructure will drive demand, and these top companies will lead the charge in delivering a sustainable built environment.
Data sourced from: Barbour ABI, The Construction Index, and euroloo.
