Company lists · Data refreshed September 2026

Top 25 Ductwork contractors based in the United Kingdom

Name: Ductwork contractors based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 16, 2026 915 companies tracked

RevenueBase identified 915 ductwork contractors headquartered in the United Kingdom as of September 2026 and tracks 6,250 professional contacts across them, including 2,403 with verified work emails. London is the largest hub.

This list covers ductwork contractors 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 16, 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 16, 2026 86% judged on-target in blind review

915Companies

6,250Contacts tracked

2,403Verified emails

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The 25 largest ductwork contractors based in the United Kingdom

Ranked by team size

Top 25 of 915 ductwork contractors based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to ductwork contractors: 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	Smith Brothers Stores LTD	Indirect evidence	Leicester, United KingdomHQ checked Sep 16, 2026	501-1,000	305 contacts →
	Indirect evidence “SBS is one of the oldest and, more recently, one of the largest independent merchants operating from within the UK directly focusing on supplying to the commercial and industrial…” Source: RevenueBase Database · checked Sep 16, 2026
2	Envirovent	Indirect evidence	Harrogate, United KingdomHQ checked Sep 16, 2026	201-500	200 contacts →
	Indirect evidence “envirovent is the leading manufacturer and supplier of ventilation systems.” Source: RevenueBase Database · checked Sep 16, 2026
3	Hotchkiss LTD	Partial evidence	Eastbourne, United KingdomHQ checked Sep 16, 2026	201-500	107 contacts →
	Partial evidence “Hotchkiss is the UK's leading air conditioning and ventilation contractor.” Source: RevenueBase Database · checked Sep 16, 2026
4	Nationwide AIR Conditioning Limited	Indirect evidence	Edenbridge, United KingdomHQ checked Sep 16, 2026	51-200	92 contacts →
	Indirect evidence “Nationwide Air Conditioning Limited is a carbon-neutral business that has been exceeding customer expectations since 2001.” Source: RevenueBase Database · checked Sep 16, 2026
5	Gilberts Blackpool LTD	Indirect evidence	Blackpool, United KingdomHQ checked Sep 16, 2026	201-500	77 contacts →
	Indirect evidence “Established in 1960, Gilberts is the UK’s leading designer and manufacturer of grilles, diffusers, louvres, smoke/fire dampers, and natural ventilation systems for the heating…” Source: RevenueBase Database · checked Sep 16, 2026
6	Greenmill AIR Conditioning And Ventilation	Indirect evidence	Colchester, United KingdomHQ checked Sep 16, 2026	51-200	65 contacts →
	Indirect evidence “Greenmill is one of the UK's leading wholesalers of Air Conditioning and Ventilation Install products.” Source: RevenueBase Database · checked Sep 16, 2026
7	Chapman Ventilation Limited	Indirect evidence	Welwyn Garden City, United KingdomHQ checked Sep 16, 2026	51-200	65 contacts →
	Indirect evidence “Restaurant ventilation for the likes of Nando's, Five Guys and The Ivy.” Source: RevenueBase Database · checked Sep 16, 2026
8	AIR Technology Systems	Partial evidence	Bromsgrove, United KingdomHQ checked Sep 16, 2026	51-200	57 contacts →
	Partial evidence “Air Technology Systems Ltd (ATS) are design and project management specialist contractors focused on providing proprietary and energy saving, Climate Control & Ventilation…” Source: RevenueBase Database · checked Sep 16, 2026
9	A1 Flue Systems	Indirect evidence	Newark, United KingdomHQ checked Sep 16, 2026	51-200	56 contacts →
	Indirect evidence “A1 Flue Systems is part of the Expo Inox Group and the UK market leader in design, manufacturing and installation services for bespoke commercial and industrial chimneys, flues…” Source: RevenueBase Database · checked Sep 16, 2026
10	Systemair UK	Indirect evidence	Birmingham, United KingdomHQ checked Sep 16, 2026	51-200	54 contacts →
	Indirect evidence “With our Head Office in Birmingham and a further 13 branches across the UK, we are ideally placed to offer our customers a fast efficient response to any enquiry for Ventilation &…” Source: RevenueBase Database · checked Sep 16, 2026
11	BTU Installation & Maintenance LTD	Indirect evidence	Guildford, United KingdomHQ checked Sep 16, 2026	51-200	53 contacts →
	Indirect evidence “BTU (Installation and Maintenance) Ltd, is a privately owned business based in Guildford, Surrey.” Source: RevenueBase Database · checked Sep 16, 2026
12	RGM Group	Partial evidence	Ballyclare, United KingdomHQ checked Sep 16, 2026	51-200	49 contacts →
	Partial evidence “RGM Group offers certified and accredited Ductwork, Fire & Smoke, Air Conditioning and Insulation solutions across the UK and Ireland.” Source: RevenueBase Database · checked Sep 16, 2026
13	Essex Thermal Services LTD	Indirect evidence	Dartford, United KingdomHQ checked Sep 16, 2026	51-200	47 contacts →
	Indirect evidence “Essex Thermal Services Ltd are a UK based company specialising in Thermal Insulation, Trace Heating, Ventilation and Air Conditioning Installs.” Source: RevenueBase Database · checked Sep 16, 2026
14	Imperial Ductwork Services LTD	Partial evidence	London, United KingdomHQ checked Sep 16, 2026	201-500	45 contacts →
	Partial evidence “From its foundation in 1997, Imperial Ductwork Services Ltd (IDSL) has grown into one of the industry’s leading companies in the Manufacture and Installation of Ductwork…” Source: RevenueBase Database · checked Sep 16, 2026
15	Specflue	Indirect evidence	Sudbury, United KingdomHQ checked Sep 16, 2026	51-200	44 contacts →
	Indirect evidence “Quality products, exceptional service.” Source: RevenueBase Database · checked Sep 16, 2026
16	Has-Vent LTD	Partial evidence	Wolverhampton, United KingdomHQ checked Sep 16, 2026	51-200	44 contacts →
	Partial evidence “HAS-Vent Ltd is one of the leading 'supply only' manufacturers and distributors of circular and flat oval ductwork and accessories in the UK.” Source: RevenueBase Database · checked Sep 16, 2026
17	Dalair Limited	Indirect evidence	Wednesbury, United KingdomHQ checked Sep 16, 2026	51-200	43 contacts →
	Indirect evidence “Founded in the early 1980's, Dalair Limited manufacture "bespoke" Air Handling Equipment to serve office blocks, hospitals, factories, pharmaceutical companies, car manufacturers…” Source: RevenueBase Database · checked Sep 16, 2026
18	Kingspan Technical Insulation LTD	Partial evidence	Basildon, United KingdomHQ checked Sep 16, 2026	51-200	40 contacts →
	Partial evidence “We manufacture high performance insulation products for pipework and ductwork in building services / HVAC, process, petrochemical and refrigeration services applications.” Source: RevenueBase Database · checked Sep 16, 2026
19	Brookvent	Indirect evidence	Belfast, United KingdomHQ checked Sep 16, 2026	51-200	40 contacts →
	Indirect evidence “Founded in 1984 by the visionary engineer Billy Divers, Brookvent has established itself as a trailblazer in the ventilation industry.” Source: RevenueBase Database · checked Sep 16, 2026
20	AIR Plants Dust Extraction LTD	Indirect evidence	Leicester, United KingdomHQ checked Sep 16, 2026	51-200	39 contacts →
	Indirect evidence “Air Plants offer the best solution for industries requiring highly efficient dust extraction and dust control ventilation systems on the market.” Source: RevenueBase Database · checked Sep 16, 2026
21	Pipetech Group	Partial evidence	Basildon, United KingdomHQ checked Sep 16, 2026	51-200	39 contacts →
	Partial evidence “Pipetech is a specialist mechanical pipework and public‑health contractor delivering high‑quality installations across commercial, industrial, residential and public‑sector…” Source: RevenueBase Database · checked Sep 16, 2026
22	TG Lynes LTD	Partial evidence	Enfield, United KingdomHQ checked Sep 16, 2026	51-200	38 contacts →
	Partial evidence “Established in 1912, TG Lynes is one of the UK's leading independent distributors of mechanical services products, supporting Mechanical, HVAC, Plumbing Contractors, Facilities…” Source: RevenueBase Database · checked Sep 16, 2026
23	Airtemp AC LTD	Indirect evidence	St Leonard's On Sea, United KingdomHQ checked Sep 16, 2026	51-200	36 contacts →
	Indirect evidence “We provide the design, manufacture, installation and service of air conditioning and ventilation systems across the UK.” Source: RevenueBase Database · checked Sep 16, 2026
24	SK Sales LTD	Indirect evidence	Middleton, United KingdomHQ checked Sep 16, 2026	51-200	36 contacts →
	Indirect evidence “SK Sales Ltd, part of the Airvance Group, is a leading air handling supplier with over 30 years' experience in the heating, ventilating and air conditioning (HVAC) sector.” Source: RevenueBase Database · checked Sep 16, 2026
25	Advanced AIR UK LTD	Indirect evidence	Thetford, United KingdomHQ checked Sep 16, 2026	51-200	34 contacts →
	Indirect evidence “Energy Efficient Air Management” Source: RevenueBase Database · checked Sep 16, 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: ductwork contractors. 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 ductwork contractors.
Partial evidence: Its own public description names part of ductwork contractors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name ductwork contractors. 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 915 ductwork contractors based in the United Kingdom

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Ductwork contractors based in the United Kingdom at a glance

As of Sep 16, 2026

38.4%Verified-email coverage

6.8Average contacts per company

1-10Median size (employees)

8.0%Largest-city concentration · London

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

463

11-50

338

51-200

201-500

501-1,000

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 915 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 ductwork contractors, 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 “ductwork contractors”. 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 ductwork contractors), 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 ductwork contractors, 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, 2,403 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 16, 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.

Ductwork contractors by metro

Ductwork contractors in London73

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 ductwork contractors, 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 ductwork contractors are there based in the United Kingdom?

RevenueBase identified 915 ductwork contractors 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?

Smith Brothers Stores LTD, headquartered in Blaby Leicester, tops this list with the largest team on record.

Which city has the most ductwork contractors?

London leads with 73 headquartered companies, followed by Birmingham (16) and Leeds (13).

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 2,403 verified decision-maker contacts tracked across these 915 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 16, 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.