Company lists · Data refreshed September 2026

Top 17 Retrofit engineering companies based in the United Kingdom

Name: Retrofit engineering companies based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 44 companies tracked

RevenueBase identified 44 company matches for retrofit engineering companies associated with the United Kingdom as of September 2026 and tracks 521 professional contacts across them, including 176 with verified work emails. London is the largest hub.

This list covers company matches for retrofit engineering companies 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.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 17, 2026 How this list was built

44Companies

521Contacts tracked

176Verified emails

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The 17 largest retrofit engineering companies based in the United Kingdom

Ranked by team size

Top 17 of 44 company matches for retrofit engineering companies based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 17, 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Ameon Limited	Exact match	Blackpool, United KingdomHQ recorded Sep 17, 2026	51-200	83 contacts →
	Exact match “Ameon Limited is a construction company based out of 9-11 OLYMPIC COURT BOARDMANS WAY, BLACKPOOL, United Kingdom.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
2	Balvac LTD	Exact match	Liverpool, United KingdomHQ recorded Sep 17, 2026	51-200	66 contacts →
	Exact match “As a trusted expert, Balvac sustainably extends the life of our nation’s infrastructure.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
3	Primech Building Services LTD	Exact match	Gillingham, United KingdomHQ recorded Sep 17, 2026	51-200	57 contacts →
	Exact match “Primech is a specialist mechanical and electrical design and build contractor, with a strong focus on retrofit and upgrade projects across existing buildings and live environments.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
4	Forcia Limited	Exact match	London, United KingdomHQ recorded Sep 17, 2026	51-200	55 contacts →
	Exact match “Forcia Limited is a construction company based out of Park Hill, London, United Kingdom.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
5	Cementers Limited	Exact match	London, United KingdomHQ recorded Sep 17, 2026	51-200	47 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
6	A.Alexander Group	Exact match	Glasgow, United KingdomHQ recorded Sep 17, 2026	51-200	36 contacts →
	Exact match “Alexander Group delivers integrated infrastructure solutions that help commercial and industrial buildings operate efficiently, safely and sustainably.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
7	Elysium Construction	Exact match	London, United KingdomHQ recorded Sep 17, 2026	11-50	13 contacts →
	Exact match “We are pioneers of civil engineering.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
8	EEH Solutions	Exact match	Harlow, United KingdomHQ recorded Sep 17, 2026	11-50	10 contacts →
	Exact match “Eco Efficient Home Solutions (EEH Solutions) is a trusted provider of energy efficiency and retrofit services, specializing in sustainable solutions that meet the highest industry…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
9	TF Group	Exact match	London, United KingdomHQ recorded Sep 17, 2026	1-10	8 contacts →
	Exact match “TF Energy is a leading force in the UK retrofit sector, recognised for delivering property upgrade projects to the highest standards.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
10	Loftus Group	Exact match	St Albans, United KingdomHQ recorded Sep 17, 2026	201-500	7 contacts →
	Exact match “At Loftus Group, we specialise in delivering high quality construction and retrofit solutions with a strong focus on compliance, safety, sustainability, and social value.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
11	National Retrofit Limited	Exact match	Halifax, United KingdomHQ recorded Sep 17, 2026	1-10	6 contacts →
	Exact match “National Retrofit Limited is a specialist retrofit energy consultancy delivering compliant PAS 2035 services that improve building performance, cut operating costs, and reduce…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
12	Turnmill Engineering	Exact match	Sunderland, United KingdomHQ recorded Sep 17, 2026	1-10	6 contacts →
	Exact match “Established in 2017, Turnmill Engineering support global companies with product design, development and volume manufacture.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
13	Peak Contracts LTD	Exact match	Hilton, United KingdomHQ recorded Sep 17, 2026	1-10	6 contacts →
	Exact match “Electrical & Mechanical Engineering Sevices.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
14	Intechnic LTD	Exact match	Swindon, United KingdomHQ recorded Sep 17, 2026	11-50	4 contacts →
	Exact match “Intechnic provides specialist Commercial Emissions Engineering services for bus operators, coach operators, HGV fleets, commercial vehicle operators, agricultural machinery and…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
15	Epic Solutions	Exact match	Harrogate, United KingdomHQ recorded Sep 17, 2026	1-10	2 contacts →
	Exact match “Providing EPC, EPC+ and Retrofit Assessment services measuring and improving the energy efficiency of your property.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
16	Wildfire Engineering LTD	Exact match	Stafford, United KingdomHQ recorded Sep 17, 2026	1-10	2 contacts →
	Exact match “We offer a consulting, design and build service from the smallest test rig questions to the most complicated challenges.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
17	Zoom24 7	Exact match	London, United KingdomHQ recorded Sep 17, 2026	201-500	1 contacts →
	Exact match “Transforming Infrastructure Through Technology & Expertise since 2004 Your Strategic Performance Partner for Plumbing, Heating & Electrical Services Comprehensive London Service…” 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 “retrofit engineering companies”. 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 17 of 44 retrofit engineering companies based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 176 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Retrofit engineering companies based in the United Kingdom at a glance

As of Sep 17, 2026

33.8%Verified-email coverage

11.8Average contacts per company

1-10Median size (employees)

20.5%Largest-city concentration · London

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

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 44 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 “retrofit engineering companies” 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 176 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 “retrofit engineering companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many retrofit engineering companies are there based in the United Kingdom?

RevenueBase identified 44 company matches for retrofit engineering companies 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?

Ameon Limited tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most retrofit engineering companies?

London leads with 9 company records, followed by Glasgow (2) and Tamworth (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 176 professional contacts with verified work emails tracked across these 44 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.

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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.