Company lists · Data refreshed September 2026

Top 25 Janitorial service companies based in London, United Kingdom

Name: Janitorial service companies based in London, United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 389 companies tracked

RevenueBase identified 389 janitorial service companies headquartered in London, United Kingdom as of September 2026 and tracks 4,029 professional contacts across them, including 750 with verified work emails. London is the largest hub.

This list covers janitorial service companies headquartered in London, 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 20, 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 20, 2026 86% judged on-target in blind review

389Companies

4,029Contacts tracked

750Verified emails

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The 25 largest janitorial service companies based in London, United Kingdom

Ranked by team size

Top 25 of 389 janitorial service companies based in London, United Kingdom, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to janitorial service companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Principle Cleaning Services	Indirect evidence	London, United KingdomHQ checked Sep 20, 2026	1,001-5,000	358 contacts →
	Indirect evidence “A market leader in corporate and commercial cleaning across London, Principle Cleaning Services (Principle) was founded in 1989 by former Executive Chairman, Douglas Cooke, and…” Source: RevenueBase Database · checked Sep 20, 2026
2	Andron Facilities Management	Indirect evidence	London, United KingdomHQ checked Sep 20, 2026	1,001-5,000	274 contacts →
	Indirect evidence “Andron is a third-generation family business with over 45 years of experience in commercial cleaning and soft facilities management.” Source: RevenueBase Database · checked Sep 20, 2026
3	Tenon FM UK	Indirect evidence	London, United KingdomHQ checked Sep 20, 2026	1,001-5,000	207 contacts →
	Indirect evidence “Tenon FM is one of the fastest growing FM providers in the world – not just the UK.” Source: RevenueBase Database · checked Sep 20, 2026
4	NJC Not Just Cleaning	Indirect evidence	London, United KingdomHQ checked Sep 20, 2026	1,001-5,000	143 contacts →
	Indirect evidence “NJC is a family-owned specialist commercial cleaning and business support services company, delivering sustainable, high-quality solutions to organisations across the UK.” Source: RevenueBase Database · checked Sep 20, 2026
5	Julius Rutherfoord & CO	Indirect evidence	London, United KingdomHQ checked Sep 20, 2026	1,001-5,000	136 contacts →
	Indirect evidence “Today, more than ever, commercial cleaning demands focus and intelligence.” Source: RevenueBase Database · checked Sep 20, 2026
6	Cleanology	Indirect evidence	London, United KingdomHQ checked Sep 20, 2026	1,001-5,000	121 contacts →
	Indirect evidence “At Cleanology, cleaning and facilities management isn’t just about perfect outcomes – it’s about how we get there.” Source: RevenueBase Database · checked Sep 20, 2026
7	Total Clean Services	Indirect evidence	London, United KingdomHQ checked Sep 20, 2026	501-1,000	120 contacts →
	Indirect evidence “The year 2023 marks 35 years since Total Clean was established.” Source: RevenueBase Database · checked Sep 20, 2026
8	Unilever Professional	Indirect evidence	London, United KingdomHQ checked Sep 20, 2026	10001+	115 contacts →
	Indirect evidence “Unilever Professional offers superior and affordable cleaning solutions for professional usage.” Source: RevenueBase Database · checked Sep 20, 2026
9	Greenzone Cleaning & Support Services	Indirect evidence	London, United KingdomHQ checked Sep 20, 2026	501-1,000	105 contacts →
	Indirect evidence “GreenZone is a commercial cleaning company like no other; we aim to challenge all industry preconceptions and deliver the cleanest and most service focused customer experience…” Source: RevenueBase Database · checked Sep 20, 2026
10	JPC By Samsic	Indirect evidence	London, United KingdomHQ checked Sep 20, 2026	501-1,000	90 contacts →
	Indirect evidence “London’s working communities demand exceptional service.” Source: RevenueBase Database · checked Sep 20, 2026
11	Act-Clean	Indirect evidence	London, United KingdomHQ checked Sep 20, 2026	1,001-5,000	73 contacts →
	Indirect evidence “We started Act-Clean with the ambition of revolutionised standards of contract cleaning within the hospitality industry.” Source: RevenueBase Database · checked Sep 20, 2026
12	ACT	Indirect evidence	London, United KingdomHQ checked Sep 20, 2026	51-200	72 contacts →
	Indirect evidence “ACT Clean provides managed cleaning and support services to London's most prestigious hotels and restaurants.” Source: RevenueBase Database · checked Sep 20, 2026
13	The Clean Space	Indirect evidence	London, United KingdomHQ checked Sep 20, 2026	1,001-5,000	52 contacts →
	Indirect evidence “The Clean Space provides cleaning services to commercial spaces in London, Birmingham, Solihull, Coventry, Rugby, Manchester, Bristol, Cardiff, Gloucester, Cheltenham and…” Source: RevenueBase Database · checked Sep 20, 2026
14	Chamberlaine Cleaning Services B Corp	Indirect evidence	London, United KingdomHQ checked Sep 20, 2026	501-1,000	43 contacts →
	Indirect evidence “People rarely remember the cleaning itself.” Source: RevenueBase Database · checked Sep 20, 2026
15	Cleaning Express	Indirect evidence	London, United KingdomHQ checked Sep 20, 2026	201-500	36 contacts →
	Indirect evidence “Cleaning Express combines cleaning expertise, first-class customer service, trained & motivated staff and local knowledge to bring together unrivalled cleaning services in London.” Source: RevenueBase Database · checked Sep 20, 2026
16	Distinct Group	Indirect evidence	London, United KingdomHQ checked Sep 20, 2026	501-1,000	33 contacts →
	Indirect evidence “At Distinct Group, our mission is to redefine cleaning and facilities management through a commitment to sustainability, superior service, and innovation.” Source: RevenueBase Database · checked Sep 20, 2026
17	Sidekick Group LTD Certified B Corp	Indirect evidence	London, United KingdomHQ checked Sep 20, 2026	1,001-5,000	29 contacts →
	Indirect evidence “We are the UK's fastest growing Facilities Management company.” Source: RevenueBase Database · checked Sep 20, 2026
18	Casna Group	Indirect evidence	London, United KingdomHQ checked Sep 20, 2026	501-1,000	28 contacts →
	Indirect evidence “Casna Group is a trusted cleaning and facilities management leader, known for delivering exceptional services tailored to diverse client needs.” Source: RevenueBase Database · checked Sep 20, 2026
19	Prime Clean Limited	Indirect evidence	London, United KingdomHQ checked Sep 20, 2026	201-500	28 contacts →
	Indirect evidence “Prime Clean is a family run cleaning and support services business that has proudly served blue chip businesses in London and the Home Counties for more than 20 years.” Source: RevenueBase Database · checked Sep 20, 2026
20	CCM Facilities LTD	Indirect evidence	London, United KingdomHQ checked Sep 20, 2026	501-1,000	21 contacts →
	Indirect evidence “At CCM we are passionate about improving lives and environments - we call it "better by nature".” Source: RevenueBase Database · checked Sep 20, 2026
21	Zing Clean	Indirect evidence	London, United KingdomHQ checked Sep 20, 2026	501-1,000	18 contacts →
	Indirect evidence “Zing goes beyond clean!” Source: RevenueBase Database · checked Sep 20, 2026
22	Apollo Cleaning Services	Indirect evidence	London, United KingdomHQ checked Sep 20, 2026	201-500	18 contacts →
	Indirect evidence “We clean and provide related services to buildings, facilities and spaces of all shapes and sizes, all over the UK.” Source: RevenueBase Database · checked Sep 20, 2026
23	The Cleaner Company	Indirect evidence	London, United KingdomHQ checked Sep 20, 2026	11-50	18 contacts →
	Indirect evidence “The Cleaner Company are specialists in professional domestic and commercial cleaning offering long-term, bespoke cleaning services in East London and surrounding areas.” Source: RevenueBase Database · checked Sep 20, 2026
24	Swift Office Cleaning Services LTD	Indirect evidence	London, United KingdomHQ checked Sep 20, 2026	201-500	17 contacts →
	Indirect evidence “Creating cleaner, healthier workplaces across London, Essex and Hertfordshire.” Source: RevenueBase Database · checked Sep 20, 2026
25	Double Check Security Group	Indirect evidence	London, United KingdomHQ checked Sep 20, 2026	201-500	17 contacts →
	Indirect evidence “Double Check Security: Trusted Security, Facilities Management & Commercial Cleaning for Premium Brands At Double Check Security (DCS), we specialise in delivering comprehensive…” Source: RevenueBase Database · checked Sep 20, 2026

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: janitorial service 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 janitorial service companies.
Partial evidence: Its own public description names part of janitorial service companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name janitorial service 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 389 janitorial service companies based in London, United Kingdom

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Janitorial service companies based in London, United Kingdom at a glance

As of Sep 20, 2026

18.6%Verified-email coverage

10.4Average contacts per company

11-50Median size (employees)

100.0%Largest-city concentration · London

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

148

11-50

114

51-200

201-500

501-1,000

1,001-5,000

10001+

Email recency for this list is measured across the whole United Kingdom list rather than for London, so it is reported there. Company counts and contact totals on this page are exact for London, over 389 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 janitorial service 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 London, United Kingdom whose own description of what they do matches “janitorial service 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 janitorial service 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 janitorial service companies, and records with no verified work email. Companies headquartered outside London 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, 750 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 20, 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.

Janitorial service companies by metro in the United Kingdom

Janitorial service companies in London389
Janitorial service companies in Manchester67
Janitorial service companies in Birmingham52
Janitorial service companies in Glasgow36
Janitorial service companies in Leeds36
Janitorial service companies in Bristol30

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 janitorial service 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 janitorial service companies are there based in London, United Kingdom?

RevenueBase identified 389 janitorial service companies headquartered in London, 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?

Principle Cleaning Services, headquartered in London, tops this list with the largest team on record.

Which city has the most janitorial service companies?

London leads with 389 headquartered companies, followed by Manchester (67) and Birmingham (52).

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 750 verified decision-maker contacts tracked across these 389 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 20, 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.