Company lists · Data refreshed November 2026

Top 23 Ventilation engineering services based in London, United Kingdom

RevenueBase identified 94 company matches for ventilation engineering services associated with London, United Kingdom as of November 2026 and tracks 535 professional contacts across them, including 160 with verified work emails. Across the United Kingdom, London is the largest hub for this category.

This list covers company matches for ventilation engineering services associated with London, United Kingdom, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 3, 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.

How to read this list RevenueBase SmartSearch · Exact Recorded Nov 3, 2026 How this list was built
94Companies
535Contacts tracked
160Verified emails
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The 23 largest ventilation engineering services based in London, United Kingdom

Ranked by team size
Top 23 of 94 company matches for ventilation engineering services based in London, United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 3, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchLondon, United KingdomHQ recorded Nov 3, 2026201-50049 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
2Exact matchLondon, United KingdomHQ recorded Nov 3, 202651-20034 contacts →

Exact match

“RDS is one of the leading ductwork manufacturer and installation companies in the Capital that has expanded over the years gaining more than 40 years experience in the industry.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
3Exact matchLondon, United KingdomHQ recorded Nov 3, 202611-5028 contacts →

Exact match

“Loop Engineering is a dynamic and expanding building services engineering consultancy based in London offering high quality, low carbon MEP design and project management services.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
4Exact matchLondon, United KingdomHQ recorded Nov 3, 202611-5018 contacts →

Exact match

“Excel Project Services Ltd are a Mechanical fit out specialist undertaking full HVAC design and build contracts to the private, industrial & public sectors.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
5Exact matchLondon, United KingdomHQ recorded Nov 3, 202611-5012 contacts →

Exact match

“Celsius Solutions Ltd delivers projects throughout London, the South East and the UK with our unequalled Design and Build service for the HVAC sector.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
6Exact matchLondon, United KingdomHQ recorded Nov 3, 202611-5011 contacts →

Exact match

“We design mechanical and electrical systems, advise on all aspects of energy, carbon reduction and building physics.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
7Exact matchLondon, United KingdomHQ recorded Nov 3, 202611-5010 contacts →

Exact match

“Mechanical, Electrical and Public Health Building Services Engineers”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
8Exact matchLondon, United KingdomHQ recorded Nov 3, 20261-108 contacts →

Exact match

“For over a quarter of a century, EFAM Air's dedicated team has been at the forefront of the ventilation industry.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
9Exact matchLondon, United KingdomHQ recorded Nov 3, 202611-507 contacts →

Exact match

“We specialize in Ductwork, Airside, and Insulation Services for the construction industry, serving various sectors- Retail - Hospitality - Residential - Commercial - Industrial…”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
10Exact matchLondon, United KingdomHQ recorded Nov 3, 202611-506 contacts →

Exact match

“Welcome to Mechanical Contracts Ltd, your trusted partner in comprehensive mechanical solutions.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
11Exact matchLondon, United KingdomHQ recorded Nov 3, 202611-505 contacts →

Exact match

“EngDesign is a building services consultancy with a commitment to providing sustainable solutions for all projects from new-build residential to listed historic monuments.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
12Exact matchLondon, United KingdomHQ recorded Nov 3, 202611-505 contacts →

Exact match

“ACS were formed in 1991 to specialise in the installation and maintenance of Air Conditioning and Ventilation Systems.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
13Exact matchLondon, United KingdomHQ recorded Nov 3, 20261-104 contacts →

Exact match

“Tenways Engineering provides Installation and control solutions for HVAC.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
14Exact matchLondon, United KingdomHQ recorded Nov 3, 20261-104 contacts →

Exact match

“The next generation of autonomous, natural ventilation.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
15Exact matchLondon, United KingdomHQ recorded Nov 3, 202611-504 contacts →

Exact match

“Hoveair are specialists in all disciplines of the Air Conditioning, Heating and Ventilation and Industry, giving comprehensive Design, Management, Installation, Commissioning and…”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
16Exact matchLondon, United KingdomHQ recorded Nov 3, 20261-103 contacts →

Exact match

“KENMAR COOLING LIMITED is a construction company based out of 171-173 GRAY'S INN ROAD, LONDON, United Kingdom.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
17Exact matchLondon, United KingdomHQ recorded Nov 3, 202611-503 contacts →

Exact match

“The team at Allcorn Smoke Control have got over 200 years combined experience in the smoke control industry.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
18Exact matchLondon, United KingdomHQ recorded Nov 3, 20261-103 contacts →

Exact match

“Welcome to PureFlow Solutions LTD – Your Partners for Clean Air and Safety!”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
19Exact matchLondon, United KingdomHQ recorded Nov 3, 202611-502 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
20Exact matchLondon, United KingdomHQ recorded Nov 3, 20261-102 contacts →

Exact match

“Consult JA is an independent Mechanical, Electrical and Public Health (MEP) engineering consultancy passionate about designing high quality systems and infrastructure to support…”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
21Exact matchLondon, United KingdomHQ recorded Nov 3, 202611-502 contacts →

Exact match

“We are a company with a very professional approach to installation of ventilation systems.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
22Exact matchLondon, United KingdomHQ recorded Nov 3, 20261-102 contacts →

Exact match

“Building Energy Consulting Engineers (BEC Engineers) provide technical services in the areas of buildings and master-planning solutions.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
23Exact matchLondon, United KingdomHQ recorded Nov 3, 20261-102 contacts →

Exact match

“Your personalised journey to ventilation starts here!”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase

Showing 23 of 94 ventilation engineering services based in London, United Kingdom

See the full list, filter by size, metro and specialty, and access 160 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Ventilation engineering services based in London, United Kingdom at a glance

As of Nov 3, 2026
29.9%Verified-email coverage
5.7Average contacts per company
1-10Median size (employees)
Nov 3, 2026Page data refreshed

Companies by employee count

1-10
51
11-50
38
51-200
2
201-500
2

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 94 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 London, United Kingdom whose business descriptions match “ventilation engineering services” 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 160 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on November 3, 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 “ventilation engineering services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many ventilation engineering services are there based in London, United Kingdom?

RevenueBase identified 94 company matches for ventilation engineering services associated with London, United Kingdom as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Imperial Ductwork Services LTD tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city in the United Kingdom has the most ventilation engineering services?

London leads the United Kingdom with 94 company records, followed by Bristol (23) and Manchester (23).

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 160 professional contacts with verified work emails tracked across these 94 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 3, 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 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.