# The 50 largest Civil Engineering companies in the United Kingdom

Tamtam tracks 120 Civil Engineering companies headquartered in the United Kingdom. This list ranks the 50 largest by number of employees on LinkedIn, led by Mott MacDonald, Amey and National Highways. Their median headcount is 573. Half of them were founded in 1982 or later. The most common headquarters are London (10), Birmingham (3) and Chelmsford (2).

These civil engineering companies in the United Kingdom include large, established firms and younger companies. They work on projects across transport, water, power, and environmental sustainability. Mott MacDonald focuses on digital innovation and complex challenges, while Amey provides engineering and decarbonisation solutions for infrastructure. National Highways manages and modernises motorways, and Costain Group PLC delivers sustainable solutions for energy, water, transport, and defence. Murphy provides engineering and construction services across multiple sectors, and BYLOR Joint Venture is building the main civil engineering works for Hinkley Point C.

A clear pattern among these companies is their strong presence in London, which serves as a major hub for many headquarters. Other significant locations include Birmingham, Coventry, and Solihull in the Midlands, as well as several companies based in the South West, such as Bridgwater and Milton Keynes.

🇬🇧 United Kingdom · 50 companies · Updated Nov 13, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Mott MacDonald](https://www.tamtam.ai/c/mott-macdonald) (mottmac.com)<br>The company focuses on improving society through digital innovation, excellence, and solving intricate challenges with clients to deliver better outcomes | Civil Engineering | 🇬🇧 London | 24,653 | 1989 |
| 2 | [Amey](https://www.tamtam.ai/c/amey) (amey.com)<br>A leading provider of engineering, operations, and decarbonisation solutions for transport infrastructure and complex facilities, focusing on sustainability and resilience | Civil Engineering | 🇬🇧 London | 11,000 |  |
| 3 | [National Highways](https://www.tamtam.ai/c/national-highways) (nationalhighways.co.uk)<br>Government company managing, maintaining, and modernising motorways and main A roads to ensure smooth traffic flow nationwide. | Civil Engineering | 🇬🇧 Birmingham | 5,889 | 2015 |
| 4 | [Murphy](https://www.tamtam.ai/c/murphy) (murphygroup.com)<br>Provides engineering and construction services across transportation, water, power, natural resources, and property sectors in UK, Ireland, and Canada. | Civil Engineering | 🇬🇧 London | 4,078 | 1951 |
| 5 | [Costain Group PLC](https://www.tamtam.ai/c/costain-group-plc) (costain.com)<br>A pioneering infrastructure company in the UK, Costain delivers sustainable solutions for energy, water, transportation, and defence markets while focusing on net zero goals and inclusive practices | Civil Engineering | 🇬🇧 London | 4,021 | 1865 |
| 6 | [BYLOR Joint Venture](https://www.tamtam.ai/c/bylor-joint-venture)<br>A joint venture between Bouygues Travaux Publics and Laing O'Rourke building the main civil engineering works for Hinkley Point C nuclear power station | Civil Engineering | 🇬🇧 Bridgwater | 1,942 |  |
| 7 | [Balfour Beatty VINCI](https://www.tamtam.ai/c/balfour-beatty-vinci) (balfourbeattyvinci.co.uk)<br>Global leaders in infrastructure, specializing in rail, highways, and aviation Delivering innovative solutions for critical projects, with expertise built over 30 years | Civil Engineering | 🇬🇧 Birmingham | 1,558 | 2008 |
| 8 | [JN Bentley](https://www.tamtam.ai/c/jn-bentley) (mottmacbentley.co.uk)<br>A UK-based company part of a global consultancy, providing feasibility, design, construction, and engineering services with a turnover exceeding £300 million | Civil Engineering | 🇬🇧 Skipton | 1,425 | 1972 |
| 9 | [Institution of Civil Engineers (ICE)](https://www.tamtam.ai/c/institution-of-civil-engineers-ice) (ice.org.uk)<br>This company is a qualifying body for civil engineers, promoting innovation and excellence in the profession worldwide while liaising with government and media | Civil Engineering | 🇬🇧 London | 1,304 | 1818 |
| 10 | [Binnies](https://www.tamtam.ai/c/binnies) (binnies.com)<br>In partnership with industry leaders, we offer comprehensive solutions for water management, infrastructure planning, and environmental sustainability to benefit communities now and in the future | Civil Engineering | 🇬🇧 Redhill | 1,012 | 2022 |
| 11 | [Barhale Ltd](https://www.tamtam.ai/c/barhale-ltd) (barhale.co.uk)<br>Specialist contractor in tunnelling, civil engineering, and utilities, providing design, construction, and maintenance services across water, transport, and energy sectors. | Civil Engineering | 🇬🇧 Walsall | 987 | 1980 |
| 12 | [Morgan Sindall Infrastructure](https://www.tamtam.ai/c/morgan-sindall-infrastructure) (morgansindallinfrastructure.com)<br>A UK business specializing in construction and engineering projects across various sectors, offering design, tunnelling, utilities, civil engineering, and more | Civil Engineering | 🇬🇧 Coventry | 891 |  |
| 13 | [MV Kelly](https://www.tamtam.ai/c/mv-kelly) (mvkelly.co.uk)<br>Award-winning civil engineering and building company in the UK, specializing in infrastructure, groundworks, and building services, with a strong focus on core values and workforce development | Civil Engineering | 🇬🇧 Solihull | 859 | 1995 |
| 14 | [Eiffage Kier Ferrovial BAM (EKFB)](https://www.tamtam.ai/c/eiffage-kier-ferrovial-bam-ekfb) (ekfb.com)<br>Specialist expertise in design, construction, operation, financing, and maintenance of major railway infrastructure and high-speed rail projects. | Civil Engineering | 🇬🇧 Milton Keynes | 820 |  |
| 15 | [Taylor Woodrow](https://www.tamtam.ai/c/taylor-woodrow) (taylorwoodrow.com)<br>Designing and delivering sustainable infrastructure projects with a focus on community impact, lasting legacy, and strong team collaboration. | Civil Engineering | 🇬🇧 | 804 | 1921 |
| 16 | [Mott MacDonald Bentley \| MMB](https://www.tamtam.ai/c/mott-macdonald-bentley-mmb) (mottmacbentley.co.uk)<br>Fully-integrated civil engineering design-and-construct company formed by JN Bentley and Mott MacDonald, delivering water sector projects with strategic focus and client relationships | Civil Engineering | 🇬🇧 Skipton | 791 |  |
| 17 | [Pell Frischmann](https://www.tamtam.ai/c/pell-frischmann) (pellfrischmann.com)<br>Specialist advisory and technical consultancy focused on sustainable solutions in built and natural environments, delivering innovative projects for communities. | Civil Engineering | 🇬🇧 London | 705 | 1926 |
| 18 | [Octavius Infrastructure](https://www.tamtam.ai/c/octavius-infrastructure) (octavius.co.uk)<br>A company focused on delivering sustainable and efficient transport solutions through collaboration with customers, suppliers, and developing their people | Civil Engineering | 🇬🇧 Reigate | 644 |  |
| 19 | [Story Contracting Limited](https://www.tamtam.ai/c/story-contracting-limited) (storycontracting.com)<br>Provides award-winning rail, plant, and construction solutions with regional offices across England and Scotland, respected nationally for expertise. | Civil Engineering | 🇬🇧 Carlisle | 640 | 1987 |
| 20 | [Capita Real estate and infrastructure](https://www.tamtam.ai/c/capita-real-estate-and-infrastructure) (capitaproperty.co.uk)<br>Announcement of company profile closure due to acquisition by WSP, advising to follow WSP UK for future updates. | Civil Engineering | 🇬🇧 London | 622 | 2004 |
| 21 | [Tony Gee and Partners](https://www.tamtam.ai/c/tony-gee-and-partners) (tonygee.com)<br>Specialist engineering consultancy firm with over 40 years of experience providing infrastructure design services to the construction industry in the UK and Overseas | Civil Engineering | 🇬🇧 Esher | 619 | 1974 |
| 22 | [QTS Group](https://www.tamtam.ai/c/qts-group) (qtsgroup.com)<br>Specializing in railway services, this contractor offers vegetation management, drainage, fencing, training, civil engineering, earthworks, geotechnical services, rope access, and plant hire Serving various clients | Civil Engineering | 🇬🇧 Strathaven | 616 | 1990 |
| 23 | [Joseph Gallagher Limited](https://www.tamtam.ai/c/joseph-gallagher-limited) (josephgallagher.co.uk)<br>Leading Civil Engineering & Tunnelling subcontractor in the UK with international presence, specializing in trenchless technology for critical infrastructure projects worldwide | Civil Engineering | 🇬🇧 Stanford-le-Hope | 600 | 1982 |
| 24 | [Cormac](https://www.tamtam.ai/c/cormac) (cormacltd.co.uk)<br>A leading UK civil engineering contractor providing specialist highways, environment services, surfacing, and design, while also focusing on recruitment, training, and social value in the community | Civil Engineering | 🇬🇧 Scorrier | 575 | 2012 |
| 25 | [VolkerStevin](https://www.tamtam.ai/c/volkerstevin) (volkerstevin.co.uk)<br>A multi-disciplinary civil engineering group within VolkerWessels, providing integrated engineering solutions in various sectors across the UK infrastructure market | Civil Engineering | 🇬🇧 Preston | 573 |  |
| 26 | [Fairhurst](https://www.tamtam.ai/c/fairhurst) (fairhurst.co.uk)<br>A UK-based LLP of Consulting Engineers delivering quality Civil and Structural engineering services with a focus on sustainable design solutions | Civil Engineering | 🇬🇧 Glasgow | 555 | 1902 |
| 27 | [Ringway Jacobs](https://www.tamtam.ai/c/ringway-jacobs) (ringwayjacobs.com)<br>A leading highways service provider specializing in road network management solutions for local authorities, delivering integrated contracts and innovative ICT systems | Civil Engineering | 🇬🇧 Chelmsford | 553 | 2005 |
| 28 | [Waterman Aspen](https://www.tamtam.ai/c/waterman-aspen) (watermanaspen.co.uk)<br>The company provides engineers and technical specialists on a secondment basis for major infrastructure projects in the UK for over 30 years | Civil Engineering | 🇬🇧 Chelmsford | 549 | 1988 |
| 29 | [Alun Griffiths (Contractors) Ltd](https://www.tamtam.ai/c/alun-griffiths-contractors-ltd) (griffiths.co.uk)<br>A sustainable civil engineering contractor connecting communities through road, rail, water, and utilities, focusing on quality, safety, and sustainability | Civil Engineering | 🇬🇧 Abergavenny | 544 | 1968 |
| 30 | [Trant Engineering Ltd](https://www.tamtam.ai/c/trant-engineering-ltd) (trant.co.uk)<br>A leading UK engineering company with a diverse portfolio in Energy, Process & Water, Defence, and Nuclear sectors, offering innovative engineering solutions globally | Civil Engineering | 🇬🇧 Southampton | 501 | 1958 |
| 31 | [Sweco UK](https://www.tamtam.ai/c/sweco-uk) (sweco.co.uk)<br>A leading architecture and engineering consultancy, Sweco plans and designs sustainable communities and cities for the future worldwide | Civil Engineering | 🇬🇧 Leeds | 489 | 1915 |
| 32 | [Nexus Infrastructure plc](https://www.tamtam.ai/c/nexus-infrastructure-plc) (nexus-infrastructure.com)<br>Innovative infrastructure projects with a focus on outstanding performance, customer service, and a strong, experienced management team to support growth | Civil Engineering | 🇬🇧 Braintree | 445 | 1976 |
| 33 | [BEAR Scotland](https://www.tamtam.ai/c/bear-scotland) (bearscot.com)<br>Management and maintenance of trunk roads, bridges, and structures across Scotland, including safety, engineering, and environmental services. | Civil Engineering | 🇬🇧 Perth | 429 | 2000 |
| 34 | [Site Engineering](https://www.tamtam.ai/c/site-engineering) (rmpsiteengineering.co.uk)<br>Site Engineering is a civil engineering company in Norwich, UK specializing in infrastructure design and construction projects | Civil Engineering | 🇬🇧 Norwich | 419 |  |
| 35 | [New Civil Engineer](https://www.tamtam.ai/c/new-civil-engineer) (newcivilengineer.com)<br>Global infrastructure magazine offering insight, inspiration, and education for civil engineering professionals worldwide through print, online content, and industry events | Civil Engineering | 🇬🇧 London | 407 | 1972 |
| 36 | [Boskalis Westminster Ltd.](https://www.tamtam.ai/c/boskalis-westminster-ltd) (boskalis.co.uk)<br>A leading dredging contractor in the UK and Ireland, offering services such as port maintenance, land reclamation, coastal protection, and environmental dredging | Civil Engineering | 🇬🇧 Fareham | 406 | 1933 |
| 37 | [TUNNELCRAFT LTD](https://www.tamtam.ai/c/tunnelcraft-ltd) (tunnelcraft.co.uk)<br>Specializing in construction projects, the company is currently involved in building a section of the Thames Tideway Tunnel to improve London's sewage system | Civil Engineering | 🇬🇧 Basildon | 403 | 1992 |
| 38 | [Skanska Costain STRABAG Joint Venture](https://www.tamtam.ai/c/skanska-costain-strabag-joint-venture) (scsjv.co.uk)<br>A joint venture delivering HS2 London Tunnels, combining high speed rail expertise, major infrastructure experience, and successful partnerships | Civil Engineering | 🇬🇧 London | 390 |  |
| 39 | [Walters](https://www.tamtam.ai/c/walters) (walters-group.co.uk)<br>Customer-focused civil engineering services with a large heavy plant fleet, delivering projects across UK with family-owned stability and modern methods. | Civil Engineering | 🇬🇧 Aberdare | 374 | 1982 |
| 40 | [Taziker](https://www.tamtam.ai/c/taziker) (taziker.com)<br>Specialist contractor offering protective coatings, structural refurbishments, and strengthening services for demanding markets in the UK across various industries | Civil Engineering | 🇬🇧 Chorley | 369 | 1969 |
| 41 | [Van Elle](https://www.tamtam.ai/c/van-elle) (van-elle.co.uk)<br>A leading UK ground engineering contractor offering total foundation solutions, specialized techniques, and expert advice across all sectors nationwide | Civil Engineering | 🇬🇧 Kirkby in Ashfield | 361 | 1984 |
| 42 | [M. Lambe Construction](https://www.tamtam.ai/c/m-lambe-construction) (mlambe.co.uk)<br>Delivers groundwork contracts for Midlands housebuilders, focusing on quality, lasting relationships, and efficient project delivery with strong community engagement. | Civil Engineering | 🇬🇧 Birmingham | 349 | 1983 |
| 43 | [Jackson Civil Engineering](https://www.tamtam.ai/c/jackson-civil-engineering) (jackson-civils.co.uk)<br>Civil engineering contractor operating across the UK, specializing in highways, bridges, infrastructure, flood defence, energy, rail, and early contractor involvement projects. | Civil Engineering | 🇬🇧 Ipswich | 348 | 1952 |
| 44 | [AKT II](https://www.tamtam.ai/c/akt-ii) (akt-uk.com)<br>A design-led structural and civil engineering consultancy with over 300 awards globally, focusing on high value, quality-driven projects and collaborations | Civil Engineering | 🇬🇧 London | 335 | 1996 |
| 45 | [Luddon Construction Limited](https://www.tamtam.ai/c/luddon-construction-limited) (luddon.co.uk)<br>A Glasgow-based company providing civil engineering and building services nationwide, focusing on client needs and delivering high quality, innovative solutions | Civil Engineering | 🇬🇧 Glasgow | 334 | 1975 |
| 46 | [HR Wallingford](https://www.tamtam.ai/c/hr-wallingford) (hrwallingford.com)<br>The company designs sustainable solutions for water usage, utilizing research, data, and expertise to address changing water impacts and future challenges | Civil Engineering | 🇬🇧 Wallingford | 332 | 1947 |
| 47 | [Roger Bullivant Limited](https://www.tamtam.ai/c/roger-bullivant-limited) (roger-bullivant.co.uk)<br>A leading UK contractor specializing in piling, foundation, and ground improvement projects, providing high-quality, safe, and efficient solutions to clients nationwide | Civil Engineering | 🇬🇧 Swadlincote | 323 | 2011 |
| 48 | [Via East Midlands](https://www.tamtam.ai/c/via-east-midlands) (viaem.co.uk)<br>A company owned by Nottinghamshire County Council, focusing on sustainable highways service and engineering services in the East Midlands region | Civil Engineering | 🇬🇧 Bilsthorpe | 313 | 2016 |
| 49 | [VolkerWessels UK](https://www.tamtam.ai/c/volkerwessels-uk) (volkerwessels.co.uk)<br>Deliver multidisciplinary engineering and construction solutions across rail, highways, aviation, ports, defence, energy, water, environment, and regeneration sectors. | Civil Engineering | 🇬🇧 Hoddesdon | 307 |  |
| 50 | [Connect Plus Services](https://www.tamtam.ai/c/connect-plus-services) (connectplusservices.co.uk)<br>Provider of highway network operation and maintenance services for the M25 and primary radial routes, ensuring safety and reliability for users | Civil Engineering | 🇬🇧 Herts | 272 | 2009 |

## How this list is built

Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 13, 2026.

## More company lists in the United Kingdom

- [The largest companies in the United Kingdom](https://www.tamtam.ai/l/largest-companies-united-kingdom) (36,547)
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- [Financial services firms in the United Kingdom](https://www.tamtam.ai/l/financial-services-firms-united-kingdom) (3,711)
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- [Professional services firms in the United Kingdom](https://www.tamtam.ai/l/professional-services-firms-united-kingdom) (2,706)
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## The same list elsewhere in United Kingdom

- [Civil Engineering companies in England](https://www.tamtam.ai/l/civil-engineering-companies-england) (100)

## The same list elsewhere

- [Civil Engineering companies in the world](https://www.tamtam.ai/l/civil-engineering-companies-in-the-world) (1,573)
- [Civil Engineering companies in Europe](https://www.tamtam.ai/l/civil-engineering-companies-in-europe) (624)

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Source: https://www.tamtam.ai/l/civil-engineering-companies-united-kingdom