Company lists · Data refreshed November 2026
Top 25 Critical facility contractors based in the United Kingdom
RevenueBase identified 1,710 company matches for critical facility contractors associated with the United Kingdom as of November 2026 and tracks 49,793 professional contacts across them, including 15,439 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 November 6, 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 | 15,296 contacts → | ||||
Exact match “Founded in 1987, Mitie is the UK’s leading facilities management and professional services company.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 2 | 1,637 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 · Nov 6, 2026 · View company records in RevenueBase | |||||
| 3 | 1,373 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 · Nov 6, 2026 · View company records in RevenueBase | |||||
| 4 | 1,204 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 · Nov 6, 2026 · View company records in RevenueBase | |||||
| 5 | 907 contacts → | ||||
Exact match “TSL is a leader in technical construction, operating across EMEA, the Americas and APAC.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 6 | 650 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 · Nov 6, 2026 · View company records in RevenueBase | |||||
| 7 | 629 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 · Nov 6, 2026 · View company records in RevenueBase | |||||
| 8 | 564 contacts → | ||||
Exact match “Dodd Group was formed in 1947 in Shropshire and has remained a privately owned family business.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 9 | 517 contacts → | ||||
Exact match “Imtech has rebranded to Dalkia UK.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 10 | 503 contacts → | ||||
Exact match “As a leading mechanical & electrical engineering provider, we design, install and maintain the complex systems and technologies that underpin the UK’s national infrastructure and…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 11 | 488 contacts → | ||||
Exact match “At EMCOR UK, we revolutionise facilities management by combining our unique engineering heritage and innovation capability.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 12 | 457 contacts → | ||||
Exact match “Redstone is now part of RedstoneConnect PLC.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 13 | 363 contacts → | ||||
Exact match “Since 1988, Jaguar Building Services has been a trusted leader in the mechanical, electrical, and public health maintenance of some of London's most prestigious landmark buildings.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 14 | 353 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 · Nov 6, 2026 · View company records in RevenueBase | |||||
| 15 | 352 contacts → | ||||
Exact match “The Briggs & Forrester Group is an award winning building services specialist and is one of the industry’s largest independent contractors with an annual turnover in excess of…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 16 | 332 contacts → | ||||
Exact match “CLC provides property maintenance, compliance, refurbishment and infrastructure-related services for customers across social housing, healthcare, defence, education, commercial…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 17 | 293 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 · Nov 6, 2026 · View company records in RevenueBase | |||||
| 18 | 268 contacts → | ||||
Exact match “Gratte Brothers Group is a leading independent provider of comprehensive building services, renowned for exceptional quality.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 19 | 267 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 · Nov 6, 2026 · View company records in RevenueBase | |||||
| 20 | 255 contacts → | ||||
Exact match “Arthur McKay is one of the UK's leading Building Support Services companies.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 21 | 252 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 · Nov 6, 2026 · View company records in RevenueBase | |||||
| 22 | 241 contacts → | ||||
Exact match “JCA is a multi-faceted engineering services and construction business.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 23 | 224 contacts → | ||||
Exact match “THE CONSTRUCTION PEOPLE - At Lancer Scott we care about what we do and the people we work with.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 24 | 198 contacts → | ||||
Exact match “P.N.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 25 | 194 contacts → | ||||
Exact match “BJF Group is a diverse building solutions company comprised of six complementary divisions; Facilities Management, Construction, Mechanical & Electrical, Project Services, MEP…” Recorded in the RevenueBase company graph · Nov 6, 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 1,710 critical facility contractors based in the United Kingdom
See the full list, filter by size, metro and specialty, and access 15,439 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 Nov 6, 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 1,710 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 15,439 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 November 6, 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 1,710 company matches for critical facility contractors associated with the United Kingdom as of November 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?
MITIE 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 192 company records, followed by Glasgow (29) and Birmingham (28).
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 15,439 professional contacts with verified work emails tracked across these 1,710 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 November 6, 2026.
Ready to reach these companies? Verified emails and direct dials for all 1,710 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 Melbourne, Australia
- Critical facility contractors based in Perth, Australia
- Critical facility contractors based in Sydney, Australia
- Critical facility contractors based in Rio De Janeiro, Brazil
- Critical facility contractors based in Sao Paulo, Brazil
- Critical facility contractors based in Calgary, Canada
- Critical facility contractors based in Toronto, Canada
- Critical facility contractors based in Bangalore, India
- Critical facility contractors based in Dublin, Ireland
- Critical facility contractors based in Auckland, New Zealand
- Critical facility contractors based in Warsaw, Poland
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 Melbourne, Australia
- Critical facility contractors based in Perth, Australia
- Critical facility contractors based in Sydney, Australia
- Critical facility contractors based in Rio De Janeiro, Brazil
- Critical facility contractors based in Sao Paulo, Brazil
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 1,710 matching company records for critical facility contractors based in the United Kingdom, with 49,793 tracked contacts and 15,439 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: November 6, 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 |  MITIEmitie.comHQ: London, United KingdomReported employees: 10001+ | London, United Kingdom | 10001+ | Exact match | 15,296 contacts → |
“Founded in 1987, Mitie is the UK’s leading facilities management and professional services company.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  ISGisgltd.comHQ: London, United KingdomReported employees: 1,001-5,000 | London, United Kingdom | 1,001-5,000 | Exact match | 1,637 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 · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  MJ Quinnmjquinn.co.ukHQ: Prescot, United KingdomReported employees: 1,001-5,000 | Prescot, United Kingdom | 1,001-5,000 | Exact match | 1,373 contacts → |
“At MJ Quinn we believe in creating great connections, with our customers, our people and our world.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Kelly Groupkelly.co.ukHQ: Wembley, United KingdomReported employees: 1,001-5,000 | Wembley, United Kingdom | 1,001-5,000 | Exact match | 1,204 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 · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  TSLtslprojects.comHQ: Gerrards Cross, United KingdomReported employees: 501-1,000 | Gerrards Cross, United Kingdom | 501-1,000 | Exact match | 907 contacts → |
“TSL is a leader in technical construction, operating across EMEA, the Americas and APAC.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Crown House Technologiescrownhouse.comHQ: Dartford, United KingdomReported employees: 1,001-5,000 | Dartford, United Kingdom | 1,001-5,000 | Exact match | 650 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 · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  FES Groupfes-group.co.ukHQ: Stirling, United KingdomReported employees: 501-1,000 | Stirling, United Kingdom | 501-1,000 | Exact match | 629 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 · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Dodd Groupdoddgroup.comHQ: Telford, United KingdomReported employees: 1,001-5,000 | Telford, United Kingdom | 1,001-5,000 | Exact match | 564 contacts → |
“Dodd Group was formed in 1947 in Shropshire and has remained a privately owned family business.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Imtechdalkia.co.ukHQ: Staines-upon-thames, United KingdomReported employees: 1,001-5,000 | Staines-upon-thames, United Kingdom | 1,001-5,000 | Exact match | 517 contacts → |
“Imtech has rebranded to Dalkia UK.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Balfour Beatty Kilpatrickbalfourbeatty.comHQ: Glasgow, United KingdomReported employees: 1,001-5,000 | Glasgow, United Kingdom | 1,001-5,000 | Exact match | 503 contacts → |
“As a leading mechanical & electrical engineering provider, we design, install and maintain the complex systems and technologies that underpin the UK’s national infrastructure and…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Emcor UKemcoruk.com HQ: Surrey, United KingdomReported employees: 1,001-5,000 | Surrey, United Kingdom | 1,001-5,000 | Exact match | 488 contacts → |
“At EMCOR UK, we revolutionise facilities management by combining our unique engineering heritage and innovation capability.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Redstone Converged Solutionsredstone.comHQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 457 contacts → |
“Redstone is now part of RedstoneConnect PLC.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Jaguar Building Services LTDjbs-ltd.co.ukHQ: London, United KingdomReported employees: 501-1,000 | London, United Kingdom | 501-1,000 | Exact match | 363 contacts → |
“Since 1988, Jaguar Building Services has been a trusted leader in the mechanical, electrical, and public health maintenance of some of London's most prestigious landmark buildings.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  J Coffey Groupjcoffey.comHQ: Harrow, United KingdomReported employees: 501-1,000 | Harrow, United Kingdom | 501-1,000 | Exact match | 353 contacts → |
“J Coffey Group is a collection of specialist building companies, with an extensive experience of more than three decades.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Briggs & Forrester Groupbriggsandforrester.co.ukHQ: Northampton, United KingdomReported employees: 501-1,000 | Northampton, United Kingdom | 501-1,000 | Exact match | 352 contacts → |
“The Briggs & Forrester Group is an award winning building services specialist and is one of the industry’s largest independent contractors with an annual turnover in excess of…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  CLCclcgroup.comHQ: Southampton, United KingdomReported employees: 1,001-5,000 | Southampton, United Kingdom | 1,001-5,000 | Exact match | 332 contacts → |
“CLC provides property maintenance, compliance, refurbishment and infrastructure-related services for customers across social housing, healthcare, defence, education, commercial…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Smart Managed Solutionssmartmanagedsolutions.comHQ: London, United KingdomReported employees: 501-1,000 | London, United Kingdom | 501-1,000 | Exact match | 293 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 · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Gratte Brothers Groupgratte.comHQ: London, United KingdomReported employees: 501-1,000 | London, United Kingdom | 501-1,000 | Exact match | 268 contacts → |
“Gratte Brothers Group is a leading independent provider of comprehensive building services, renowned for exceptional quality.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  The Shore Grouptheshoregroup.co.ukHQ: Hove, United KingdomReported employees: 201-500 | Hove, United Kingdom | 201-500 | Exact match | 267 contacts → |
“The Shore Group build, maintain and resource exceptional projects and services for our clients every day.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Arthur Mckayarthur-mckay.comHQ: Edinburgh, United KingdomReported employees: 1,001-5,000 | Edinburgh, United Kingdom | 1,001-5,000 | Exact match | 255 contacts → |
“Arthur McKay is one of the UK's leading Building Support Services companies.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Sudlowssudlows.comHQ: Manchester, United KingdomReported employees: 201-500 | Manchester, United Kingdom | 201-500 | Exact match | 252 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 · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  JCA Engineeringjca.co.ukHQ: Stevenage, United KingdomReported employees: 201-500 | Stevenage, United Kingdom | 201-500 | Exact match | 241 contacts → |
“JCA is a multi-faceted engineering services and construction business.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Lancer Scott LTDlancerscott.co.ukHQ: Bristol, United KingdomReported employees: 51-200 | Bristol, United Kingdom | 51-200 | Exact match | 224 contacts → |
“THE CONSTRUCTION PEOPLE - At Lancer Scott we care about what we do and the people we work with.” Recorded description excerpt · November 6, 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 | 198 contacts → |
“P.N.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  BJF Groupbjfgroup.co.ukHQ: Sandling, United KingdomReported employees: 201-500 | Sandling, United Kingdom | 201-500 | Exact match | 194 contacts → |
“BJF Group is a diverse building solutions company comprised of six complementary divisions; Facilities Management, Construction, Mechanical & Electrical, Project Services, MEP…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 1,710 company matches
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Critical facility contractors: dataset insights
November 6, 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
1,632 records in the displayed employee bands.
78 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 1,710 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: November 6, 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 1,710 matching company records, 49,793 tracked contacts and 15,439 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: November 6, 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 Melbourne, Australia
- Critical facility contractors based in Perth, Australia
- Critical facility contractors based in Sydney, Australia
- Critical facility contractors based in Rio De Janeiro, Brazil
- Critical facility contractors based in Sao Paulo, Brazil
- Critical facility contractors based in Calgary, Canada
- Critical facility contractors based in Toronto, Canada
- Critical facility contractors based in Bangalore, India
- Critical facility contractors based in Dublin, Ireland
- Critical facility contractors based in Auckland, New Zealand
- Critical facility contractors based in Warsaw, Poland
Cite this list
RevenueBase Data Team. Top 25 critical facility contractors based in the United Kingdom. Snapshot: November 6, 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 Melbourne, Australia
- Critical facility contractors based in Perth, Australia
- Critical facility contractors based in Sydney, Australia
- Critical facility contractors based in Rio De Janeiro, Brazil
- Critical facility contractors based in Sao Paulo, Brazil
Company intelligence · public preview
Top 25 critical facility contractors based in the United Kingdom
RevenueBase records 1,710 matching company records for critical facility contractors based in the United Kingdom, with 49,793 tracked contacts and 15,439 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: November 6, 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 | MITIEmitie.com HQ: London, United KingdomReported employees: 10001+ | London, United Kingdom | 10001+ | Exact match | 15,296 contacts → |
“Founded in 1987, Mitie is the UK’s leading facilities management and professional services company.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | ISGisgltd.com HQ: London, United KingdomReported employees: 1,001-5,000 | London, United Kingdom | 1,001-5,000 | Exact match | 1,637 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 · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | MJ Quinnmjquinn.co.uk HQ: Prescot, United KingdomReported employees: 1,001-5,000 | Prescot, United Kingdom | 1,001-5,000 | Exact match | 1,373 contacts → |
“At MJ Quinn we believe in creating great connections, with our customers, our people and our world.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Kelly Groupkelly.co.uk HQ: Wembley, United KingdomReported employees: 1,001-5,000 | Wembley, United Kingdom | 1,001-5,000 | Exact match | 1,204 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 · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | TSLtslprojects.com HQ: Gerrards Cross, United KingdomReported employees: 501-1,000 | Gerrards Cross, United Kingdom | 501-1,000 | Exact match | 907 contacts → |
“TSL is a leader in technical construction, operating across EMEA, the Americas and APAC.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Crown House Technologiescrownhouse.com HQ: Dartford, United KingdomReported employees: 1,001-5,000 | Dartford, United Kingdom | 1,001-5,000 | Exact match | 650 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 · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | FES Groupfes-group.co.uk HQ: Stirling, United KingdomReported employees: 501-1,000 | Stirling, United Kingdom | 501-1,000 | Exact match | 629 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 · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Dodd Groupdoddgroup.com HQ: Telford, United KingdomReported employees: 1,001-5,000 | Telford, United Kingdom | 1,001-5,000 | Exact match | 564 contacts → |
“Dodd Group was formed in 1947 in Shropshire and has remained a privately owned family business.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | 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 | 517 contacts → |
“Imtech has rebranded to Dalkia UK.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Balfour Beatty Kilpatrickbalfourbeatty.com HQ: Glasgow, United KingdomReported employees: 1,001-5,000 | Glasgow, United Kingdom | 1,001-5,000 | Exact match | 503 contacts → |
“As a leading mechanical & electrical engineering provider, we design, install and maintain the complex systems and technologies that underpin the UK’s national infrastructure and…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Emcor UKemcoruk.com HQ: Surrey, United KingdomReported employees: 1,001-5,000 | Surrey, United Kingdom | 1,001-5,000 | Exact match | 488 contacts → |
“At EMCOR UK, we revolutionise facilities management by combining our unique engineering heritage and innovation capability.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Redstone Converged Solutionsredstone.com HQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 457 contacts → |
“Redstone is now part of RedstoneConnect PLC.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Jaguar Building Services LTDjbs-ltd.co.uk HQ: London, United KingdomReported employees: 501-1,000 | London, United Kingdom | 501-1,000 | Exact match | 363 contacts → |
“Since 1988, Jaguar Building Services has been a trusted leader in the mechanical, electrical, and public health maintenance of some of London's most prestigious landmark buildings.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | J Coffey Groupjcoffey.com HQ: Harrow, United KingdomReported employees: 501-1,000 | Harrow, United Kingdom | 501-1,000 | Exact match | 353 contacts → |
“J Coffey Group is a collection of specialist building companies, with an extensive experience of more than three decades.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Briggs & Forrester Groupbriggsandforrester.co.uk HQ: Northampton, United KingdomReported employees: 501-1,000 | Northampton, United Kingdom | 501-1,000 | Exact match | 352 contacts → |
“The Briggs & Forrester Group is an award winning building services specialist and is one of the industry’s largest independent contractors with an annual turnover in excess of…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | CLCclcgroup.com HQ: Southampton, United KingdomReported employees: 1,001-5,000 | Southampton, United Kingdom | 1,001-5,000 | Exact match | 332 contacts → |
“CLC provides property maintenance, compliance, refurbishment and infrastructure-related services for customers across social housing, healthcare, defence, education, commercial…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Smart Managed Solutionssmartmanagedsolutions.com HQ: London, United KingdomReported employees: 501-1,000 | London, United Kingdom | 501-1,000 | Exact match | 293 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 · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Gratte Brothers Groupgratte.com HQ: London, United KingdomReported employees: 501-1,000 | London, United Kingdom | 501-1,000 | Exact match | 268 contacts → |
“Gratte Brothers Group is a leading independent provider of comprehensive building services, renowned for exceptional quality.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | The Shore Grouptheshoregroup.co.uk HQ: Hove, United KingdomReported employees: 201-500 | Hove, United Kingdom | 201-500 | Exact match | 267 contacts → |
“The Shore Group build, maintain and resource exceptional projects and services for our clients every day.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Arthur Mckayarthur-mckay.com HQ: Edinburgh, United KingdomReported employees: 1,001-5,000 | Edinburgh, United Kingdom | 1,001-5,000 | Exact match | 255 contacts → |
“Arthur McKay is one of the UK's leading Building Support Services companies.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Sudlowssudlows.com HQ: Manchester, United KingdomReported employees: 201-500 | Manchester, United Kingdom | 201-500 | Exact match | 252 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 · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | JCA Engineeringjca.co.uk HQ: Stevenage, United KingdomReported employees: 201-500 | Stevenage, United Kingdom | 201-500 | Exact match | 241 contacts → |
“JCA is a multi-faceted engineering services and construction business.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Lancer Scott LTDlancerscott.co.uk HQ: Bristol, United KingdomReported employees: 51-200 | Bristol, United Kingdom | 51-200 | Exact match | 224 contacts → |
“THE CONSTRUCTION PEOPLE - At Lancer Scott we care about what we do and the people we work with.” Recorded description excerpt · November 6, 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 | 198 contacts → |
“P.N.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | BJF Groupbjfgroup.co.uk HQ: Sandling, United KingdomReported employees: 201-500 | Sandling, United Kingdom | 201-500 | Exact match | 194 contacts → |
“BJF Group is a diverse building solutions company comprised of six complementary divisions; Facilities Management, Construction, Mechanical & Electrical, Project Services, MEP…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
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Critical facility contractors: dataset insights
November 6, 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
1,632 records in the displayed employee bands.
78 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 1,710 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: November 6, 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 1,710 matching company records, 49,793 tracked contacts and 15,439 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: November 6, 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
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Cite this list
RevenueBase Data Team. Top 25 critical facility contractors based in the United Kingdom. Snapshot: November 6, 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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