Company lists · Data refreshed September 2026
Top 25 Mission critical facilities contractors based in the United Kingdom
RevenueBase identified 87 company matches for mission critical facilities contractors associated with the United Kingdom as of September 2026 and tracks 4,850 professional contacts across them, including 2,185 with verified work emails. London is the largest hub.
This list covers company matches for mission critical facilities 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 September 17, 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 mission critical facilities contractors based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,053 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 · Sep 17, 2026 · View company records in RevenueBase | |||||
| 2 | 785 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 · Sep 17, 2026 · View company records in RevenueBase | |||||
| 3 | 585 contacts → | ||||
Exact match “Onnec is a leading partner for IT Infrastructure design, installation and operational support services.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase | |||||
| 4 | 415 contacts → | ||||
Exact match “At Colt Data Centre Services, we aspire to our customers’ success, ensuring your growth is supported by the best infrastructure solution for your business’ unique vision.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase | |||||
| 5 | 259 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 · Sep 17, 2026 · View company records in RevenueBase | |||||
| 6 | 228 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 · Sep 17, 2026 · View company records in RevenueBase | |||||
| 7 | 178 contacts → | ||||
Exact match “OFFICIAL ACCOUNT* Datalec Precision Installations provides world-class data centre design, build, and installation services that leverage unique technical expertise, including…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase | |||||
| 8 | 164 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 · Sep 17, 2026 · View company records in RevenueBase | |||||
| 9 | 151 contacts → | ||||
Exact match “Beacon Comms is the trading name of Beacon Communication Services Ltd.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase | |||||
| 10 | 92 contacts → | ||||
Exact match “The founders of MiCiM (Mission Critical Management)[pronounced "My Sim"] created the company with a shared vision: to offer a focused, end-to-end, hands-on project management and…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase | |||||
| 11 | 89 contacts → | ||||
Exact match “We connect people, technologies and locations, enabling service providers, OEM's and internet service providers to deploy, scale, support and maintain network infrastructure…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase | |||||
| 12 | 82 contacts → | ||||
Exact match “Future-tech is a specialist data centre engineering services provider.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase | |||||
| 13 | 56 contacts → | ||||
Exact match “IDS Group are a global data centre and colocation specialist providing a variety of services to support our customers around the world from both our UK and Netherlands office…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase | |||||
| 14 | 46 contacts → | ||||
Exact match “BRG Technologies is the global leader in the off-site construction of mission-critical facilities, specialising in the data centre and healthcare sectors.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase | |||||
| 15 | 37 contacts → | ||||
Exact match “BladeRoom Data Centres are designed to be globally consistent and deployable anywhere in the world with speed and precision.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase | |||||
| 16 | 29 contacts → | ||||
Exact match “INFINITI is a one-stop data centre services provider with an eye for detail and outstanding customer service.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase | |||||
| 17 | 27 contacts → | ||||
Exact match “Data Centre Solutions Critical Facilities Solutions (CFS) is a world-class facilities services business with more than 25 years’ experience working in Data Centre and Enterprise…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase | |||||
| 18 | 24 contacts → | ||||
Exact match “An independent mechanical and electrical engineering firm which operates worldwide, Deerns has the capacity to make ideas a reality.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase | |||||
| 19 | 23 contacts → | ||||
Exact match “Workspace Technology Ltd provide expertly engineered Mission Critical Infrastructure, Rack Colocation Hosting and Maintenance & Support Services.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase | |||||
| 20 | 22 contacts → | ||||
Exact match “Global Technical Realty (GTR) has the data center experience you need.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase | |||||
| 21 | 21 contacts → | ||||
Exact match “Protecting the Heartbeat of British Business'' We create, maintain and manage controlled live environments vital for the operation of thousands of servers at the heart of the UK…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase | |||||
| 22 | 19 contacts → | ||||
Exact match “Haz Mission Critical provides professional Mission Critical support to clients around the world.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase | |||||
| 23 | 17 contacts → | ||||
Exact match “Brexons Limited was established in 2006 and has enjoyed continued growth, year on year, ever since.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase | |||||
| 24 | 17 contacts → | ||||
Exact match “EDP Europe specialises in the supply of critical infrastructure solutions for the data centre environment.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase | |||||
| 25 | 17 contacts → | ||||
Exact match “2bm is an award-winning data centre solutions provider, specialising in the design and build of new data centres, as well as the refurbishment and upgrade of existing computer…” Recorded in the RevenueBase company graph · Sep 17, 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 “mission critical facilities 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 87 mission critical facilities contractors based in the United Kingdom
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Mission critical facilities contractors based in the United Kingdom at a glance
As of Sep 17, 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 87 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 “mission critical facilities 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 2,185 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 September 17, 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.
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 “mission critical facilities contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many mission critical facilities contractors are there based in the United Kingdom?
RevenueBase identified 87 company matches for mission critical facilities contractors associated with the United Kingdom as of September 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?
Kelly Group tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most mission critical facilities contractors?
London leads with 25 company records, followed by Manchester (2) and Witham (2).
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 2,185 professional contacts with verified work emails tracked across these 87 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 September 17, 2026.
Ready to reach these companies? Verified emails and direct dials for all 87 mission critical facilities contractors based in the United Kingdom. Start with a free account, no credit card.
Download this list →Related lists
Mission critical facilities contractors by geography
- Mission critical facilities contractors based in Australia
- Mission critical facilities contractors based in Brazil
- Mission critical facilities contractors based in Canada
- Mission critical facilities contractors based in France
- Mission critical facilities contractors based in Germany
- Mission critical facilities contractors based in India
- Mission critical facilities contractors based in the Netherlands
- Mission critical facilities contractors based in Spain
- Mission critical facilities contractors based in the 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
- Mission critical facilities contractors based in Australia
- Mission critical facilities contractors based in Brazil
- Mission critical facilities contractors based in Canada
- Mission critical facilities contractors based in France
- Mission critical facilities contractors based in Germany
- Mission critical facilities contractors based in India
Company intelligence · public preview
Top 25 mission critical facilities 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 87 matching company records for mission critical facilities contractors based in the United Kingdom, with 4,850 tracked contacts and 2,185 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: September 17, 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 mission critical facilities 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 |  Kelly Groupkelly.co.ukHQ: Wembley, United KingdomReported employees: 1,001-5,000 | Wembley, United Kingdom | 1,001-5,000 | Exact match | 1,053 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 · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  RED Engineering Designred-eng.comHQ: London, United KingdomReported employees: 501-1,000 | London, United Kingdom | 501-1,000 | Exact match | 785 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 · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  ONNEConnecgroup.comHQ: London, United KingdomReported employees: 501-1,000 | London, United Kingdom | 501-1,000 | Exact match | 585 contacts → |
“Onnec is a leading partner for IT Infrastructure design, installation and operational support services.” Recorded description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Colt Data Centre Servicescoltdatacentres.netHQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 415 contacts → |
“At Colt Data Centre Services, we aspire to our customers’ success, ensuring your growth is supported by the best infrastructure solution for your business’ unique vision.” Recorded description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Smart Managed Solutionssmartmanagedsolutions.comHQ: London, United KingdomReported employees: 501-1,000 | London, United Kingdom | 501-1,000 | Exact match | 259 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 · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Sudlowssudlows.comHQ: Manchester, United KingdomReported employees: 201-500 | Manchester, United Kingdom | 201-500 | Exact match | 228 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 · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Datalec Precision Installations Limiteddatalecltd.com HQ: Buntingford Herts, United KingdomReported employees: 51-200 | Buntingford Herts, United Kingdom | 51-200 | Exact match | 178 contacts → |
“OFFICIAL ACCOUNT* Datalec Precision Installations provides world-class data centre design, build, and installation services that leverage unique technical expertise, including…” Recorded description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  DOWDSdowdsgroup.comHQ: Ballymena, United KingdomReported employees: 201-500 | Ballymena, United Kingdom | 201-500 | Exact match | 164 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 · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Beacon Commsbeaconcomms.co.ukHQ: Tavistock, United KingdomReported employees: 201-500 | Tavistock, United Kingdom | 201-500 | Exact match | 151 contacts → |
“Beacon Comms is the trading name of Beacon Communication Services Ltd.” Recorded description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  MICIMmicimgroup.comHQ: Reading, United KingdomReported employees: 51-200 | Reading, United Kingdom | 51-200 | Exact match | 92 contacts → |
“The founders of MiCiM (Mission Critical Management)[pronounced "My Sim"] created the company with a shared vision: to offer a focused, end-to-end, hands-on project management and…” Recorded description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Linbrooke Services LTDlinbrooke.co.ukHQ: Sheffield, United KingdomReported employees: 201-500 | Sheffield, United Kingdom | 201-500 | Exact match | 89 contacts → |
“We connect people, technologies and locations, enabling service providers, OEM's and internet service providers to deploy, scale, support and maintain network infrastructure…” Recorded description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Future-Techfuture-tech.co.ukHQ: Wokingham, United KingdomReported employees: 51-200 | Wokingham, United Kingdom | 51-200 | Exact match | 82 contacts → |
“Future-tech is a specialist data centre engineering services provider.” Recorded description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  IDS Grouphexatronicdatacenter.comHQ: Fleet, United KingdomReported employees: 51-200 | Fleet, United Kingdom | 51-200 | Exact match | 56 contacts → |
“IDS Group are a global data centre and colocation specialist providing a variety of services to support our customers around the world from both our UK and Netherlands office…” Recorded description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  BRG Technologiesbrgtech.comHQ: Cheltenham, United KingdomReported employees: 51-200 | Cheltenham, United Kingdom | 51-200 | Exact match | 46 contacts → |
“BRG Technologies is the global leader in the off-site construction of mission-critical facilities, specialising in the data centre and healthcare sectors.” Recorded description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Bladeroom Data Centresbladeroom.comHQ: Cheltenham, United KingdomReported employees: 51-200 | Cheltenham, United Kingdom | 51-200 | Exact match | 37 contacts → |
“BladeRoom Data Centres are designed to be globally consistent and deployable anywhere in the world with speed and precision.” Recorded description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Infiniti IT Limitedinfiniti-it.co.ukHQ: Witney, United KingdomReported employees: 1-10 | Witney, United Kingdom | 1-10 | Exact match | 29 contacts → |
“INFINITI is a one-stop data centre services provider with an eye for detail and outstanding customer service.” Recorded description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Critical Facilities Solutions LTDcriticalfacilitiessolutions.co.ukHQ: Witham, United KingdomReported employees: 51-200 | Witham, United Kingdom | 51-200 | Exact match | 27 contacts → |
“Data Centre Solutions Critical Facilities Solutions (CFS) is a world-class facilities services business with more than 25 years’ experience working in Data Centre and Enterprise…” Recorded description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Deerns UKdeerns.comHQ: London, United KingdomReported employees: 501-1,000 | London, United Kingdom | 501-1,000 | Exact match | 24 contacts → |
“An independent mechanical and electrical engineering firm which operates worldwide, Deerns has the capacity to make ideas a reality.” Recorded description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Workspace Technology LTDworkspace-technology.comHQ: Sutton Coldfield, United KingdomReported employees: 11-50 | Sutton Coldfield, United Kingdom | 11-50 | Exact match | 23 contacts → |
“Workspace Technology Ltd provide expertly engineered Mission Critical Infrastructure, Rack Colocation Hosting and Maintenance & Support Services.” Recorded description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Global Technical Realtyglobaltechnicalrealty.comHQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 22 contacts → |
“Global Technical Realty (GTR) has the data center experience you need.” Recorded description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  FEL Group LTDfelgroup.co.ukHQ: Scunthorpe, United KingdomReported employees: 11-50 | Scunthorpe, United Kingdom | 11-50 | Exact match | 21 contacts → |
“Protecting the Heartbeat of British Business'' We create, maintain and manage controlled live environments vital for the operation of thousands of servers at the heart of the UK…” Recorded description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  HAZ Mission Criticalhazmissioncritical.comHQ: Berkshire, United KingdomReported employees: 51-200 | Berkshire, United Kingdom | 51-200 | Exact match | 19 contacts → |
“Haz Mission Critical provides professional Mission Critical support to clients around the world.” Recorded description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Brexons LTDbrexons.co.uk HQ: Gainsborough, United KingdomReported employees: 11-50 | Gainsborough, United Kingdom | 11-50 | Exact match | 17 contacts → |
“Brexons Limited was established in 2006 and has enjoyed continued growth, year on year, ever since.” Recorded description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  EDP Europe Limitededpeurope.comHQ: Witham, United KingdomReported employees: 11-50 | Witham, United Kingdom | 11-50 | Exact match | 17 contacts → |
“EDP Europe specialises in the supply of critical infrastructure solutions for the data centre environment.” Recorded description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  2bm LTD2bm.co.ukHQ: Nottingham, United KingdomReported employees: 11-50 | Nottingham, United Kingdom | 11-50 | Exact match | 17 contacts → |
“2bm is an award-winning data centre solutions provider, specialising in the design and build of new data centres, as well as the refurbishment and upgrade of existing computer…” Recorded description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 87 company matches
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Mission critical facilities contractors: dataset insights
September 17, 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
87 records in the displayed employee bands.
0 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 87 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: September 17, 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 ↗
Questions about this company list
What does Exact match mean for mission critical facilities 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 mission critical facilities contractors did RevenueBase find based in the United Kingdom?
The saved snapshot records 87 matching company records, 4,850 tracked contacts and 2,185 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: September 17, 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
Mission critical facilities contractors by geography
- Mission critical facilities contractors based in Australia
- Mission critical facilities contractors based in Brazil
- Mission critical facilities contractors based in Canada
- Mission critical facilities contractors based in France
- Mission critical facilities contractors based in Germany
- Mission critical facilities contractors based in India
- Mission critical facilities contractors based in the Netherlands
- Mission critical facilities contractors based in Spain
- Mission critical facilities contractors based in the United States
Cite this list
RevenueBase Data Team. Top 25 mission critical facilities contractors based in the United Kingdom. Snapshot: September 17, 2026. https://revenuebase.ai/companies/mission-critical-facilities-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
- Mission critical facilities contractors based in Australia
- Mission critical facilities contractors based in Brazil
- Mission critical facilities contractors based in Canada
- Mission critical facilities contractors based in France
- Mission critical facilities contractors based in Germany
- Mission critical facilities contractors based in India
Company intelligence · public preview
Top 25 mission critical facilities contractors based in the United Kingdom
RevenueBase records 87 matching company records for mission critical facilities contractors based in the United Kingdom, with 4,850 tracked contacts and 2,185 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: September 17, 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 mission critical facilities 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 | Kelly Groupkelly.co.uk HQ: Wembley, United KingdomReported employees: 1,001-5,000 | Wembley, United Kingdom | 1,001-5,000 | Exact match | 1,053 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 · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | RED Engineering Designred-eng.com HQ: London, United KingdomReported employees: 501-1,000 | London, United Kingdom | 501-1,000 | Exact match | 785 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 · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | ONNEConnecgroup.com HQ: London, United KingdomReported employees: 501-1,000 | London, United Kingdom | 501-1,000 | Exact match | 585 contacts → |
“Onnec is a leading partner for IT Infrastructure design, installation and operational support services.” Recorded description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Colt Data Centre Servicescoltdatacentres.net HQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 415 contacts → |
“At Colt Data Centre Services, we aspire to our customers’ success, ensuring your growth is supported by the best infrastructure solution for your business’ unique vision.” Recorded description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Smart Managed Solutionssmartmanagedsolutions.com HQ: London, United KingdomReported employees: 501-1,000 | London, United Kingdom | 501-1,000 | Exact match | 259 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 · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Sudlowssudlows.com HQ: Manchester, United KingdomReported employees: 201-500 | Manchester, United Kingdom | 201-500 | Exact match | 228 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 · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Datalec Precision Installations Limiteddatalecltd.com HQ: Buntingford Herts, United KingdomReported employees: 51-200 | Buntingford Herts, United Kingdom | 51-200 | Exact match | 178 contacts → |
“OFFICIAL ACCOUNT* Datalec Precision Installations provides world-class data centre design, build, and installation services that leverage unique technical expertise, including…” Recorded description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | DOWDSdowdsgroup.com HQ: Ballymena, United KingdomReported employees: 201-500 | Ballymena, United Kingdom | 201-500 | Exact match | 164 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 · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Beacon Commsbeaconcomms.co.uk HQ: Tavistock, United KingdomReported employees: 201-500 | Tavistock, United Kingdom | 201-500 | Exact match | 151 contacts → |
“Beacon Comms is the trading name of Beacon Communication Services Ltd.” Recorded description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | MICIMmicimgroup.com HQ: Reading, United KingdomReported employees: 51-200 | Reading, United Kingdom | 51-200 | Exact match | 92 contacts → |
“The founders of MiCiM (Mission Critical Management)[pronounced "My Sim"] created the company with a shared vision: to offer a focused, end-to-end, hands-on project management and…” Recorded description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Linbrooke Services LTDlinbrooke.co.uk HQ: Sheffield, United KingdomReported employees: 201-500 | Sheffield, United Kingdom | 201-500 | Exact match | 89 contacts → |
“We connect people, technologies and locations, enabling service providers, OEM's and internet service providers to deploy, scale, support and maintain network infrastructure…” Recorded description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Future-Techfuture-tech.co.uk HQ: Wokingham, United KingdomReported employees: 51-200 | Wokingham, United Kingdom | 51-200 | Exact match | 82 contacts → |
“Future-tech is a specialist data centre engineering services provider.” Recorded description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | IDS Grouphexatronicdatacenter.com HQ: Fleet, United KingdomReported employees: 51-200 | Fleet, United Kingdom | 51-200 | Exact match | 56 contacts → |
“IDS Group are a global data centre and colocation specialist providing a variety of services to support our customers around the world from both our UK and Netherlands office…” Recorded description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | BRG Technologiesbrgtech.com HQ: Cheltenham, United KingdomReported employees: 51-200 | Cheltenham, United Kingdom | 51-200 | Exact match | 46 contacts → |
“BRG Technologies is the global leader in the off-site construction of mission-critical facilities, specialising in the data centre and healthcare sectors.” Recorded description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Bladeroom Data Centresbladeroom.com HQ: Cheltenham, United KingdomReported employees: 51-200 | Cheltenham, United Kingdom | 51-200 | Exact match | 37 contacts → |
“BladeRoom Data Centres are designed to be globally consistent and deployable anywhere in the world with speed and precision.” Recorded description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Infiniti IT Limitedinfiniti-it.co.uk HQ: Witney, United KingdomReported employees: 1-10 | Witney, United Kingdom | 1-10 | Exact match | 29 contacts → |
“INFINITI is a one-stop data centre services provider with an eye for detail and outstanding customer service.” Recorded description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Critical Facilities Solutions LTDcriticalfacilitiessolutions.co.uk HQ: Witham, United KingdomReported employees: 51-200 | Witham, United Kingdom | 51-200 | Exact match | 27 contacts → |
“Data Centre Solutions Critical Facilities Solutions (CFS) is a world-class facilities services business with more than 25 years’ experience working in Data Centre and Enterprise…” Recorded description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Deerns UKdeerns.com HQ: London, United KingdomReported employees: 501-1,000 | London, United Kingdom | 501-1,000 | Exact match | 24 contacts → |
“An independent mechanical and electrical engineering firm which operates worldwide, Deerns has the capacity to make ideas a reality.” Recorded description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Workspace Technology LTDworkspace-technology.com HQ: Sutton Coldfield, United KingdomReported employees: 11-50 | Sutton Coldfield, United Kingdom | 11-50 | Exact match | 23 contacts → |
“Workspace Technology Ltd provide expertly engineered Mission Critical Infrastructure, Rack Colocation Hosting and Maintenance & Support Services.” Recorded description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Global Technical Realtyglobaltechnicalrealty.com HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 22 contacts → |
“Global Technical Realty (GTR) has the data center experience you need.” Recorded description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | FEL Group LTDfelgroup.co.uk HQ: Scunthorpe, United KingdomReported employees: 11-50 | Scunthorpe, United Kingdom | 11-50 | Exact match | 21 contacts → |
“Protecting the Heartbeat of British Business'' We create, maintain and manage controlled live environments vital for the operation of thousands of servers at the heart of the UK…” Recorded description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | HAZ Mission Criticalhazmissioncritical.com HQ: Berkshire, United KingdomReported employees: 51-200 | Berkshire, United Kingdom | 51-200 | Exact match | 19 contacts → |
“Haz Mission Critical provides professional Mission Critical support to clients around the world.” Recorded description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Brexons LTDbrexons.co.uk HQ: Gainsborough, United KingdomReported employees: 11-50 | Gainsborough, United Kingdom | 11-50 | Exact match | 17 contacts → |
“Brexons Limited was established in 2006 and has enjoyed continued growth, year on year, ever since.” Recorded description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | EDP Europe Limitededpeurope.com HQ: Witham, United KingdomReported employees: 11-50 | Witham, United Kingdom | 11-50 | Exact match | 17 contacts → |
“EDP Europe specialises in the supply of critical infrastructure solutions for the data centre environment.” Recorded description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | 2bm LTD2bm.co.uk HQ: Nottingham, United KingdomReported employees: 11-50 | Nottingham, United Kingdom | 11-50 | Exact match | 17 contacts → |
“2bm is an award-winning data centre solutions provider, specialising in the design and build of new data centres, as well as the refurbishment and upgrade of existing computer…” Recorded description excerpt · September 17, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 87 company matches
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Mission critical facilities contractors: dataset insights
September 17, 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
87 records in the displayed employee bands.
0 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 87 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: September 17, 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 ↗
Questions about this company list
What does Exact match mean for mission critical facilities 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 mission critical facilities contractors did RevenueBase find based in the United Kingdom?
The saved snapshot records 87 matching company records, 4,850 tracked contacts and 2,185 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: September 17, 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.
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Cite this list
RevenueBase Data Team. Top 25 mission critical facilities contractors based in the United Kingdom. Snapshot: September 17, 2026. https://revenuebase.ai/companies/mission-critical-facilities-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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