Company lists · Data refreshed September 2026
Top 25 Maintenance outsourcing companies based in the United Kingdom
RevenueBase identified 783 maintenance outsourcing companies headquartered in the United Kingdom as of September 2026 and tracks 29,692 professional contacts across them, including 6,569 with verified work emails. London is the largest hub.
This list covers maintenance outsourcing companies headquartered in the United Kingdom, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 27, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 maintenance outsourcing companies based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 13,908 contacts → | ||||
Indirect evidence “Founded in 1987, Mitie is the UK’s leading facilities management and professional services company.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 2 | 5,702 contacts → | ||||
Indirect evidence “ISS is a leading workplace experience and facilities management company with more than 125 years of global experience.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 3 | 1,023 contacts → | ||||
Indirect evidence “Arcus FM is an award-winning full-service facilities management company self-delivering over 80% of our services across the UK.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 4 | 909 contacts → | ||||
Indirect evidence “At EMCOR UK, we revolutionise facilities management by combining our unique engineering heritage and innovation capability.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 5 | 643 contacts → | ||||
Partial evidence “We partner with our clients to navigate the complexities of property maintenance, providing agile, responsive, and reliable solutions that empower you to focus on your core…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 6 | 341 contacts → | ||||
Partial evidence “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.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 7 | 256 contacts → | ||||
Indirect evidence “Solid Systems Global is a worldwide provider of multi-vendor enterprise equipment services that cover the complete lifecycle of install base technology support.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 8 | 243 contacts → | ||||
Indirect evidence “Anabas is a dedicated facilities management company specialising in exceptional service delivery for our clients operating in corporate workplaces.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 9 | 182 contacts → | ||||
Indirect evidence “At The Westgrove Group, we specialise in delivering comprehensive facilities management services tailored to meet the dynamic needs of our diverse clients.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 10 | 145 contacts → | ||||
Indirect evidence “Founded in 2004, Aspect combines expertise and innovation to deliver professional property care across London and the South East.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 11 | 142 contacts → | ||||
Indirect evidence “Premier Support Services is a national company delivering a wide range of hard and soft services.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 12 | 137 contacts → | ||||
Indirect evidence “Phosters are a national facilities management provider, offering Total FM services and outsourced services, with capabilities covering operational, technical, commercial…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 13 | 130 contacts → | ||||
Indirect evidence “Antac Support Services delivers premium, integrated support services tailored to meet the diverse needs of our clients.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 14 | 129 contacts → | ||||
Partial evidence “Evolve Facility Services is a professional repairs, maintenance and facilities management company that is a commercial subsidiary of Riverside Group.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 15 | 119 contacts → | ||||
Partial evidence “Commercial Maintenance Services UK Ltd (CMS) is a nationwide market leader in Facilities and Commercial Building Maintenance-proudly built on the values of Responsiveness…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 16 | 101 contacts → | ||||
Partial evidence “Founded in 1944, AD Construction Group Ltd is a long-established building maintenance and refurbishment contractor delivering high-quality projects across London and the South…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 17 | 98 contacts → | ||||
Partial evidence “Founded on the Cambridge Science Park to manage facilities for some of the UK's most innovative companies, Cambridge Maintenance is now the UK's most innovative maintenance…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 18 | 82 contacts → | ||||
Partial evidence “HFL Building Solutions Group offers mobile maintenance services, integrated facilities services and building environmental services to wide range of sectors.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 19 | 81 contacts → | ||||
Indirect evidence “We are a UK facilities management business and provide the following services nationwide- 24/7 FM Helpdesk - Third Party Supplier Management - Bespoke Web Portal Management…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 20 | 67 contacts → | ||||
Indirect evidence “We pride ourselves on service, innovation and the ongoing relationships we have with our client.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 21 | 66 contacts → | ||||
Indirect evidence “Aston Services Group evolved from Cleanall’s merger with Care FM (July 2016) and we are continuing to build on our reputation, with particular emphasis on becoming one of the…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 22 | 64 contacts → | ||||
Partial evidence “Masterfix | Property Maintenance & Technical Services London Masterfix is a leading London property maintenance company, delivering high-quality reactive maintenance, planned…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 23 | 63 contacts → | ||||
Indirect evidence “Responding to changing customer demands, TemcoUK has evolved from a professional cleaning services provider to one offering a range of related facility solutions.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 24 | 59 contacts → | ||||
Indirect evidence “CHC Group Limited (CHC) have delivered excellence in building engineering services and facilities management for over 50 years.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 25 | 57 contacts → | ||||
Indirect evidence “Your tenants don't stop having emergencies when your office closes.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: maintenance outsourcing companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names maintenance outsourcing companies.
- Partial evidence
- Its own public description names part of maintenance outsourcing companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name maintenance outsourcing companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 783 maintenance outsourcing companies based in the United Kingdom
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Maintenance outsourcing companies based in the United Kingdom at a glance
As of Sep 27, 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 783 companies.
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among maintenance outsourcing companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in the United Kingdom whose own description of what they do matches “maintenance outsourcing companies”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names maintenance outsourcing companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among maintenance outsourcing companies, and records with no verified work email. Companies headquartered outside United Kingdom are excluded even when they keep an office there.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- 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 listed company carries at least one verified work email, 6,569 across the full list. 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 27, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names maintenance outsourcing companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many maintenance outsourcing companies are there based in the United Kingdom?
RevenueBase identified 783 maintenance outsourcing companies headquartered in the United Kingdom as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
MITIE, headquartered in London, tops this list with the largest team on record.
Which city has the most maintenance outsourcing companies?
London leads with 130 headquartered companies, followed by Birmingham (23) and Manchester (15).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 6,569 verified decision-maker contacts tracked across these 783 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 27, 2026.
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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 Smart Search, 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.
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