Company lists · Data refreshed October 2026
Top 25 Critical facility contractors based in the United Kingdom
RevenueBase identified 433 company matches for critical facility contractors associated with the United Kingdom as of October 2026 and tracks 36,629 professional contacts across them, including 11,833 with verified work emails. London is the largest hub.
This list covers company matches for critical facility contractors associated with the United Kingdom, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed October 10, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest critical facility contractors based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 6,933 contacts → | ||||
Exact match “Who we are: Amey is a global, integrated infrastructure consultancy and operations partner.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase | |||||
| 2 | 3,280 contacts → | ||||
Exact match “Murphy is a leading international, multi-disciplined engineering and construction company founded in 1951 that improves life by delivering world-class infrastructure.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase | |||||
| 3 | 2,493 contacts → | ||||
Exact match “Telent designs, builds, manages, and maintains the nation’s critical infrastructure technology that keeps the country moving, connected, and safe.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase | |||||
| 4 | 1,603 contacts → | ||||
Exact match “Who we are: At ISG, our vision is to be the world’s most dynamic construction services company, delivering places that help people and businesses thrive.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase | |||||
| 5 | 1,287 contacts → | ||||
Exact match “At MJ Quinn we believe in creating great connections, with our customers, our people and our world.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase | |||||
| 6 | 1,220 contacts → | ||||
Exact match “BakerHicks are a design, engineering and project delivery company specialising in complex infrastructure, process and built environments across the full project life cycle, from…” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase | |||||
| 7 | 1,111 contacts → | ||||
Exact match “Established in 1985 to support the emerging UK cable television market, Kelly Group has diversified to meet the needs of our clients.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase | |||||
| 8 | 871 contacts → | ||||
Exact match “TSL is a leader in technical construction, operating across EMEA, the Americas and APAC.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase | |||||
| 9 | 796 contacts → | ||||
Exact match “RED Engineering Design, a company of Tractebel, is a global engineering consultancy specialising in the design of complex, mission-critical Data Centre and digital infrastructure…” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase | |||||
| 10 | 640 contacts → | ||||
Exact match “Part of the Laing O’Rourke Group, and founded on more than 200 years of experience, we are a leading construction and infrastructure technology services provider, supplying a…” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase | |||||
| 11 | 620 contacts → | ||||
Exact match “Onnec is a leading partner for IT Infrastructure design, installation and operational support services.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase | |||||
| 12 | 600 contacts → | ||||
Exact match “The FES Group is one of the largest independent technical services companies in the UK over 60 years of experience providing building services solutions to a wide range of…” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase | |||||
| 13 | 509 contacts → | ||||
Exact match “Imtech has rebranded to Dalkia UK.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase | |||||
| 14 | 456 contacts → | ||||
Exact match “Redstone is now part of RedstoneConnect PLC.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase | |||||
| 15 | 338 contacts → | ||||
Exact match “J Coffey Group is a collection of specialist building companies, with an extensive experience of more than three decades.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase | |||||
| 16 | 286 contacts → | ||||
Exact match “Over the last 15 years, we have worked in the world's top data centres and commercial facilities, providing quality engineering services.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase | |||||
| 17 | 257 contacts → | ||||
Exact match “The Shore Group build, maintain and resource exceptional projects and services for our clients every day.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase | |||||
| 18 | 239 contacts → | ||||
Exact match “Sudlows is a multi-award winning Critical Infrastructures, Enterprise Services and Facilities Management specialist which provides a full range of technical services for…” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase | |||||
| 19 | 237 contacts → | ||||
Exact match “JCA is a multi-faceted engineering services and construction business.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase | |||||
| 20 | 175 contacts → | ||||
Exact match “blu-3 is a leading, fully integrated infrastructure provider, delivering expertise and extensive knowledge to the UK’s largest construction projects.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase | |||||
| 21 | 168 contacts → | ||||
Exact match “With 45+ years in business, Dowds expertise spans the full lifecycle of complex build environments – from initial design and systems integration to final handover and beyond.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase | |||||
| 22 | 151 contacts → | ||||
Exact match “MCS Ltd are specialist building services engineers covering all aspects of commercial and industrial building services and infrastructure engineering across varying market sectors.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase | |||||
| 23 | 147 contacts → | ||||
Exact match “Established in 2003, JCK has successfully and consistently been delivering excellent service to clients in our areas of specialism: Mechanical, Electrical & Public Health Building…” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase | |||||
| 24 | 147 contacts → | ||||
Exact match “P.N.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase | |||||
| 25 | 140 contacts → | ||||
Exact match “Mackenzie Construction is a contractor positioned to design and construct infrastructure and building assets for public and private sector clients.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “critical facility contractors”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 433 critical facility contractors based in the United Kingdom
See the full list, filter by size, metro and specialty, and access 11,833 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Critical facility contractors based in the United Kingdom at a glance
As of Oct 10, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for United Kingdom, so it is reported there. Company counts and contact totals on this page are exact for United Kingdom, over 433 companies.
How this list was built
The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
- What qualifies
- Company records associated with the United Kingdom whose business descriptions match “critical facility contractors” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
- RevenueBase SmartSearch
- Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
- Public preview
- The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
- Match quality
- RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every displayed company carries at least one verified work email. RevenueBase tracks 11,833 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on October 10, 2026. Lists refresh periodically as the graph is re-checked.
- Record context
- Company records and descriptions can change. Check the company's website for its current services and locations.
Critical facility contractors by metro
Frequently asked
What is RevenueBase SmartSearch?
RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “critical facility contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many critical facility contractors are there based in the United Kingdom?
RevenueBase identified 433 company matches for critical facility contractors associated with the United Kingdom as of October 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.
What is the largest company on this list?
AMEY tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most critical facility contractors?
London leads with 84 company records, followed by Glasgow (7) and Manchester (7).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 11,833 professional contacts with verified work emails tracked across these 433 companies; direct dials are available where recorded.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on October 10, 2026.
Ready to reach these companies? Verified emails and direct dials for all 433 critical facility contractors based in the United Kingdom. Start with a free account, no credit card.
Download this list →Related lists
Critical facility contractors by geography
- Critical facility contractors based in Buenos Aires, Argentina
- Critical facility contractors based in Sao Paulo, Brazil
- Critical facility contractors based in Rome, Italy
- Critical facility contractors based in Singapore, Singapore
- Critical facility contractors based in Madrid, Spain
- Critical facility contractors based in Dubai, United Arab Emirates
- Critical facility contractors based in London, United Kingdom
- Critical facility contractors based in Atlanta, United States
- Critical facility contractors based in Chicago, United States
- Critical facility contractors based in Dallas, United States
- Critical facility contractors based in Denver, United States
- Critical facility contractors based in Houston, United States
About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Critical facility contractors based in Buenos Aires, Argentina
- Critical facility contractors based in Sao Paulo, Brazil
- Critical facility contractors based in Rome, Italy
- Critical facility contractors based in Singapore, Singapore
- Critical facility contractors based in Madrid, Spain
- Critical facility contractors based in Dubai, United Arab Emirates
Company intelligence · public preview
Top 25 critical facility contractors based in the United Kingdom
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 433 matching company records for critical facility contractors based in the United Kingdom, with 36,629 tracked contacts and 11,833 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: October 10, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 critical facility contractors based in the United Kingdom
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  AMEYamey.co.ukHQ: London, United KingdomReported employees: 10001+ | London, United Kingdom | 10001+ | Exact match | 6,933 contacts → |
“Who we are: Amey is a global, integrated infrastructure consultancy and operations partner.” Recorded description excerpt · October 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Murphymurphygroup.comHQ: London, United KingdomReported employees: 1,001-5,000 | London, United Kingdom | 1,001-5,000 | Exact match | 3,280 contacts → |
“Murphy is a leading international, multi-disciplined engineering and construction company founded in 1951 that improves life by delivering world-class infrastructure.” Recorded description excerpt · October 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Telent Technology Services LTDtelent.com HQ: Warwick, United KingdomReported employees: 1,001-5,000 | Warwick, United Kingdom | 1,001-5,000 | Exact match | 2,493 contacts → |
“Telent designs, builds, manages, and maintains the nation’s critical infrastructure technology that keeps the country moving, connected, and safe.” Recorded description excerpt · October 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | ISGisgltd.com HQ: London, United KingdomReported employees: 1,001-5,000 | London, United Kingdom | 1,001-5,000 | Exact match | 1,603 contacts → |
“Who we are: At ISG, our vision is to be the world’s most dynamic construction services company, delivering places that help people and businesses thrive.” Recorded description excerpt · October 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | MJ Quinnmjquinn.co.uk HQ: Prescot, United KingdomReported employees: 1,001-5,000 | Prescot, United Kingdom | 1,001-5,000 | Exact match | 1,287 contacts → |
“At MJ Quinn we believe in creating great connections, with our customers, our people and our world.” Recorded description excerpt · October 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Bakerhicksbakerhicks.comHQ: Warwick, United KingdomReported employees: 1,001-5,000 | Warwick, United Kingdom | 1,001-5,000 | Exact match | 1,220 contacts → |
“BakerHicks are a design, engineering and project delivery company specialising in complex infrastructure, process and built environments across the full project life cycle, from…” Recorded description excerpt · October 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Kelly Groupkelly.co.ukHQ: Wembley, United KingdomReported employees: 1,001-5,000 | Wembley, United Kingdom | 1,001-5,000 | Exact match | 1,111 contacts → |
“Established in 1985 to support the emerging UK cable television market, Kelly Group has diversified to meet the needs of our clients.” Recorded description excerpt · October 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  TSLtslprojects.comHQ: Gerrards Cross, United KingdomReported employees: 501-1,000 | Gerrards Cross, United Kingdom | 501-1,000 | Exact match | 871 contacts → |
“TSL is a leader in technical construction, operating across EMEA, the Americas and APAC.” Recorded description excerpt · October 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  RED Engineering Designred-eng.comHQ: London, United KingdomReported employees: 501-1,000 | London, United Kingdom | 501-1,000 | Exact match | 796 contacts → |
“RED Engineering Design, a company of Tractebel, is a global engineering consultancy specialising in the design of complex, mission-critical Data Centre and digital infrastructure…” Recorded description excerpt · October 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Crown House Technologiescrownhouse.comHQ: Dartford, United KingdomReported employees: 1,001-5,000 | Dartford, United Kingdom | 1,001-5,000 | Exact match | 640 contacts → |
“Part of the Laing O’Rourke Group, and founded on more than 200 years of experience, we are a leading construction and infrastructure technology services provider, supplying a…” Recorded description excerpt · October 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  ONNEConnecgroup.comHQ: London, United KingdomReported employees: 501-1,000 | London, United Kingdom | 501-1,000 | Exact match | 620 contacts → |
“Onnec is a leading partner for IT Infrastructure design, installation and operational support services.” Recorded description excerpt · October 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  FES Groupfes-group.co.ukHQ: Stirling, United KingdomReported employees: 501-1,000 | Stirling, United Kingdom | 501-1,000 | Exact match | 600 contacts → |
“The FES Group is one of the largest independent technical services companies in the UK over 60 years of experience providing building services solutions to a wide range of…” Recorded description excerpt · October 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Imtechdalkia.co.ukHQ: Staines-upon-thames, United KingdomReported employees: 1,001-5,000 | Staines-upon-thames, United Kingdom | 1,001-5,000 | Exact match | 509 contacts → |
“Imtech has rebranded to Dalkia UK.” Recorded description excerpt · October 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Redstone Converged Solutionsredstone.comHQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 456 contacts → |
“Redstone is now part of RedstoneConnect PLC.” Recorded description excerpt · October 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | J Coffey Groupjcoffey.com HQ: Harrow, United KingdomReported employees: 501-1,000 | Harrow, United Kingdom | 501-1,000 | Exact match | 338 contacts → |
“J Coffey Group is a collection of specialist building companies, with an extensive experience of more than three decades.” Recorded description excerpt · October 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Smart Managed Solutionssmartmanagedsolutions.comHQ: London, United KingdomReported employees: 501-1,000 | London, United Kingdom | 501-1,000 | Exact match | 286 contacts → |
“Over the last 15 years, we have worked in the world's top data centres and commercial facilities, providing quality engineering services.” Recorded description excerpt · October 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | The Shore Grouptheshoregroup.co.uk HQ: Hove, United KingdomReported employees: 201-500 | Hove, United Kingdom | 201-500 | Exact match | 257 contacts → |
“The Shore Group build, maintain and resource exceptional projects and services for our clients every day.” Recorded description excerpt · October 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Sudlowssudlows.comHQ: Manchester, United KingdomReported employees: 201-500 | Manchester, United Kingdom | 201-500 | Exact match | 239 contacts → |
“Sudlows is a multi-award winning Critical Infrastructures, Enterprise Services and Facilities Management specialist which provides a full range of technical services for…” Recorded description excerpt · October 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  JCA Engineeringjca.co.ukHQ: Stevenage, United KingdomReported employees: 201-500 | Stevenage, United Kingdom | 201-500 | Exact match | 237 contacts → |
“JCA is a multi-faceted engineering services and construction business.” Recorded description excerpt · October 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Blu-3 UK Limitedblu-3.co.uk HQ: Kent, United KingdomReported employees: 51-200 | Kent, United Kingdom | 51-200 | Exact match | 175 contacts → |
“blu-3 is a leading, fully integrated infrastructure provider, delivering expertise and extensive knowledge to the UK’s largest construction projects.” Recorded description excerpt · October 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  DOWDSdowdsgroup.comHQ: Ballymena, United KingdomReported employees: 201-500 | Ballymena, United Kingdom | 201-500 | Exact match | 168 contacts → |
“With 45+ years in business, Dowds expertise spans the full lifecycle of complex build environments – from initial design and systems integration to final handover and beyond.” Recorded description excerpt · October 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  MCSmcsmc.co.ukHQ: Bristol, United KingdomReported employees: 51-200 | Bristol, United Kingdom | 51-200 | Exact match | 151 contacts → |
“MCS Ltd are specialist building services engineers covering all aspects of commercial and industrial building services and infrastructure engineering across varying market sectors.” Recorded description excerpt · October 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  JCK Limitedjckltd.comHQ: Colnbrook, United KingdomReported employees: 201-500 | Colnbrook, United Kingdom | 201-500 | Exact match | 147 contacts → |
“Established in 2003, JCK has successfully and consistently been delivering excellent service to clients in our areas of specialism: Mechanical, Electrical & Public Health Building…” Recorded description excerpt · October 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  PN Daly Limitedpndaly.co.ukHQ: Rochdale, United KingdomReported employees: 501-1,000 | Rochdale, United Kingdom | 501-1,000 | Exact match | 147 contacts → |
“P.N.” Recorded description excerpt · October 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Mackenzie Constructionmackenzieconstruction.comHQ: Glasgow, United KingdomReported employees: 201-500 | Glasgow, United Kingdom | 201-500 | Exact match | 140 contacts → |
“Mackenzie Construction is a contractor positioned to design and construct infrastructure and building assets for public and private sector clients.” Recorded description excerpt · October 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 433 company matches
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Critical facility contractors: dataset insights
October 10, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
430 records in the displayed employee bands.
3 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured worldwide rather than for United Kingdom, so it is reported there. Company counts and contact totals on this page are exact for United Kingdom, over 433 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: October 10, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Critical facility contractors by metro
Questions about this company list
What does Exact match mean for critical facility contractors?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many critical facility contractors did RevenueBase find based in the United Kingdom?
The saved snapshot records 433 matching company records, 36,629 tracked contacts and 11,833 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: October 10, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Critical facility contractors by geography
- Critical facility contractors based in Buenos Aires, Argentina
- Critical facility contractors based in Sao Paulo, Brazil
- Critical facility contractors based in Rome, Italy
- Critical facility contractors based in Singapore, Singapore
- Critical facility contractors based in Madrid, Spain
- Critical facility contractors based in Dubai, United Arab Emirates
- Critical facility contractors based in London, United Kingdom
- Critical facility contractors based in Atlanta, United States
- Critical facility contractors based in Chicago, United States
- Critical facility contractors based in Dallas, United States
- Critical facility contractors based in Denver, United States
- Critical facility contractors based in Houston, United States
Cite this list
RevenueBase Data Team. Top 25 critical facility contractors based in the United Kingdom. Snapshot: October 10, 2026. https://revenuebase.ai/companies/critical-facility-contractors/united-kingdom.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Critical facility contractors based in Buenos Aires, Argentina
- Critical facility contractors based in Sao Paulo, Brazil
- Critical facility contractors based in Rome, Italy
- Critical facility contractors based in Singapore, Singapore
- Critical facility contractors based in Madrid, Spain
- Critical facility contractors based in Dubai, United Arab Emirates
Company intelligence · public preview
Top 25 critical facility contractors based in the United Kingdom
RevenueBase records 433 matching company records for critical facility contractors based in the United Kingdom, with 36,629 tracked contacts and 11,833 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: October 10, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 critical facility contractors based in the United Kingdom
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | AMEYamey.co.uk HQ: London, United KingdomReported employees: 10001+ | London, United Kingdom | 10001+ | Exact match | 6,933 contacts → |
“Who we are: Amey is a global, integrated infrastructure consultancy and operations partner.” Recorded description excerpt · October 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Murphymurphygroup.com HQ: London, United KingdomReported employees: 1,001-5,000 | London, United Kingdom | 1,001-5,000 | Exact match | 3,280 contacts → |
“Murphy is a leading international, multi-disciplined engineering and construction company founded in 1951 that improves life by delivering world-class infrastructure.” Recorded description excerpt · October 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Telent Technology Services LTDtelent.com HQ: Warwick, United KingdomReported employees: 1,001-5,000 | Warwick, United Kingdom | 1,001-5,000 | Exact match | 2,493 contacts → |
“Telent designs, builds, manages, and maintains the nation’s critical infrastructure technology that keeps the country moving, connected, and safe.” Recorded description excerpt · October 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | ISGisgltd.com HQ: London, United KingdomReported employees: 1,001-5,000 | London, United Kingdom | 1,001-5,000 | Exact match | 1,603 contacts → |
“Who we are: At ISG, our vision is to be the world’s most dynamic construction services company, delivering places that help people and businesses thrive.” Recorded description excerpt · October 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | MJ Quinnmjquinn.co.uk HQ: Prescot, United KingdomReported employees: 1,001-5,000 | Prescot, United Kingdom | 1,001-5,000 | Exact match | 1,287 contacts → |
“At MJ Quinn we believe in creating great connections, with our customers, our people and our world.” Recorded description excerpt · October 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Bakerhicksbakerhicks.com HQ: Warwick, United KingdomReported employees: 1,001-5,000 | Warwick, United Kingdom | 1,001-5,000 | Exact match | 1,220 contacts → |
“BakerHicks are a design, engineering and project delivery company specialising in complex infrastructure, process and built environments across the full project life cycle, from…” Recorded description excerpt · October 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Kelly Groupkelly.co.uk HQ: Wembley, United KingdomReported employees: 1,001-5,000 | Wembley, United Kingdom | 1,001-5,000 | Exact match | 1,111 contacts → |
“Established in 1985 to support the emerging UK cable television market, Kelly Group has diversified to meet the needs of our clients.” Recorded description excerpt · October 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | TSLtslprojects.com HQ: Gerrards Cross, United KingdomReported employees: 501-1,000 | Gerrards Cross, United Kingdom | 501-1,000 | Exact match | 871 contacts → |
“TSL is a leader in technical construction, operating across EMEA, the Americas and APAC.” Recorded description excerpt · October 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | RED Engineering Designred-eng.com HQ: London, United KingdomReported employees: 501-1,000 | London, United Kingdom | 501-1,000 | Exact match | 796 contacts → |
“RED Engineering Design, a company of Tractebel, is a global engineering consultancy specialising in the design of complex, mission-critical Data Centre and digital infrastructure…” Recorded description excerpt · October 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Crown House Technologiescrownhouse.com HQ: Dartford, United KingdomReported employees: 1,001-5,000 | Dartford, United Kingdom | 1,001-5,000 | Exact match | 640 contacts → |
“Part of the Laing O’Rourke Group, and founded on more than 200 years of experience, we are a leading construction and infrastructure technology services provider, supplying a…” Recorded description excerpt · October 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | ONNEConnecgroup.com HQ: London, United KingdomReported employees: 501-1,000 | London, United Kingdom | 501-1,000 | Exact match | 620 contacts → |
“Onnec is a leading partner for IT Infrastructure design, installation and operational support services.” Recorded description excerpt · October 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | FES Groupfes-group.co.uk HQ: Stirling, United KingdomReported employees: 501-1,000 | Stirling, United Kingdom | 501-1,000 | Exact match | 600 contacts → |
“The FES Group is one of the largest independent technical services companies in the UK over 60 years of experience providing building services solutions to a wide range of…” Recorded description excerpt · October 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Imtechdalkia.co.uk HQ: Staines-upon-thames, United KingdomReported employees: 1,001-5,000 | Staines-upon-thames, United Kingdom | 1,001-5,000 | Exact match | 509 contacts → |
“Imtech has rebranded to Dalkia UK.” Recorded description excerpt · October 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Redstone Converged Solutionsredstone.com HQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 456 contacts → |
“Redstone is now part of RedstoneConnect PLC.” Recorded description excerpt · October 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | J Coffey Groupjcoffey.com HQ: Harrow, United KingdomReported employees: 501-1,000 | Harrow, United Kingdom | 501-1,000 | Exact match | 338 contacts → |
“J Coffey Group is a collection of specialist building companies, with an extensive experience of more than three decades.” Recorded description excerpt · October 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Smart Managed Solutionssmartmanagedsolutions.com HQ: London, United KingdomReported employees: 501-1,000 | London, United Kingdom | 501-1,000 | Exact match | 286 contacts → |
“Over the last 15 years, we have worked in the world's top data centres and commercial facilities, providing quality engineering services.” Recorded description excerpt · October 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | The Shore Grouptheshoregroup.co.uk HQ: Hove, United KingdomReported employees: 201-500 | Hove, United Kingdom | 201-500 | Exact match | 257 contacts → |
“The Shore Group build, maintain and resource exceptional projects and services for our clients every day.” Recorded description excerpt · October 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Sudlowssudlows.com HQ: Manchester, United KingdomReported employees: 201-500 | Manchester, United Kingdom | 201-500 | Exact match | 239 contacts → |
“Sudlows is a multi-award winning Critical Infrastructures, Enterprise Services and Facilities Management specialist which provides a full range of technical services for…” Recorded description excerpt · October 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | JCA Engineeringjca.co.uk HQ: Stevenage, United KingdomReported employees: 201-500 | Stevenage, United Kingdom | 201-500 | Exact match | 237 contacts → |
“JCA is a multi-faceted engineering services and construction business.” Recorded description excerpt · October 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Blu-3 UK Limitedblu-3.co.uk HQ: Kent, United KingdomReported employees: 51-200 | Kent, United Kingdom | 51-200 | Exact match | 175 contacts → |
“blu-3 is a leading, fully integrated infrastructure provider, delivering expertise and extensive knowledge to the UK’s largest construction projects.” Recorded description excerpt · October 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | DOWDSdowdsgroup.com HQ: Ballymena, United KingdomReported employees: 201-500 | Ballymena, United Kingdom | 201-500 | Exact match | 168 contacts → |
“With 45+ years in business, Dowds expertise spans the full lifecycle of complex build environments – from initial design and systems integration to final handover and beyond.” Recorded description excerpt · October 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | MCSmcsmc.co.uk HQ: Bristol, United KingdomReported employees: 51-200 | Bristol, United Kingdom | 51-200 | Exact match | 151 contacts → |
“MCS Ltd are specialist building services engineers covering all aspects of commercial and industrial building services and infrastructure engineering across varying market sectors.” Recorded description excerpt · October 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | JCK Limitedjckltd.com HQ: Colnbrook, United KingdomReported employees: 201-500 | Colnbrook, United Kingdom | 201-500 | Exact match | 147 contacts → |
“Established in 2003, JCK has successfully and consistently been delivering excellent service to clients in our areas of specialism: Mechanical, Electrical & Public Health Building…” Recorded description excerpt · October 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | PN Daly Limitedpndaly.co.uk HQ: Rochdale, United KingdomReported employees: 501-1,000 | Rochdale, United Kingdom | 501-1,000 | Exact match | 147 contacts → |
“P.N.” Recorded description excerpt · October 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Mackenzie Constructionmackenzieconstruction.com HQ: Glasgow, United KingdomReported employees: 201-500 | Glasgow, United Kingdom | 201-500 | Exact match | 140 contacts → |
“Mackenzie Construction is a contractor positioned to design and construct infrastructure and building assets for public and private sector clients.” Recorded description excerpt · October 10, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 433 company matches
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Critical facility contractors: dataset insights
October 10, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
430 records in the displayed employee bands.
3 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured worldwide rather than for United Kingdom, so it is reported there. Company counts and contact totals on this page are exact for United Kingdom, over 433 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: October 10, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Critical facility contractors by metro
Questions about this company list
What does Exact match mean for critical facility contractors?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many critical facility contractors did RevenueBase find based in the United Kingdom?
The saved snapshot records 433 matching company records, 36,629 tracked contacts and 11,833 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: October 10, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Critical facility contractors by geography
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Cite this list
RevenueBase Data Team. Top 25 critical facility contractors based in the United Kingdom. Snapshot: October 10, 2026. https://revenuebase.ai/companies/critical-facility-contractors/united-kingdom.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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- Critical facility contractors based in Buenos Aires, Argentina
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