Company lists · Data refreshed September 2026

Top 25 Architectural steel companies based in London, United Kingdom

Name: Architectural steel 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 30, 2026 117 companies tracked

RevenueBase identified 117 architectural steel companies headquartered in London, United Kingdom as of September 2026 and tracks 1,212 professional contacts across them, including 408 with verified work emails. Across the United Kingdom, London is the largest hub for this category.

This list covers architectural steel 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 30, 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 30, 2026 86% judged on-target in blind review

117Companies

1,212Contacts tracked

408Verified emails

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The 25 largest architectural steel companies based in London, United Kingdom

Ranked by team size

Top 25 of 117 architectural steel companies based in London, United Kingdom, ranked by team size, largest first. Data refreshed Sep 30, 2026. RevenueBase Smart Search rates how each company's information relates to architectural steel 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	Josef Gartner	Indirect evidence	London, United KingdomHQ checked Sep 30, 2026	501-1,000	164 contacts →
	Indirect evidence “We are part of Permasteelisa Group - the leading international façade specialist that has been shaping city skylines worldwide for generations.” Source: RevenueBase Database · checked Sep 30, 2026
2	Asfd Engineered Design	Indirect evidence	London, United KingdomHQ checked Sep 30, 2026	51-200	125 contacts →
	Indirect evidence “ASFD Ltd is the design and engineering team of McMullen Facades and part of the established JRL Group, providing integrated construction solutions and delivering complex real…” Source: RevenueBase Database · checked Sep 30, 2026
3	Elite Metal Group	Partial evidence	London, United KingdomHQ checked Sep 30, 2026	51-200	57 contacts →
	Partial evidence “At the Elite Metal Group we consider ourselves to be the steel fabrication experts!” Source: RevenueBase Database · checked Sep 30, 2026
4	Novum Structures Europe	Indirect evidence	London, United KingdomHQ checked Sep 30, 2026	201-500	52 contacts →
	Indirect evidence “Novum Structures specialises in the design, engineering, fabrication, supply, and installation of membrane systems (ETFE, PTFE, PVC), structural glazing, supporting structures…” Source: RevenueBase Database · checked Sep 30, 2026
5	Asme Engineering LTD	Strong evidence	London, United KingdomHQ checked Sep 30, 2026	51-200	48 contacts →
	Strong evidence “ASME Engineering provides structural steel and architectural metalwork for projects in the South of England.” Source: RevenueBase Database · checked Sep 30, 2026
6	BCSA	Partial evidence	London, United KingdomHQ checked Sep 30, 2026	11-50	48 contacts →
	Partial evidence “The British Constructional Steelwork Association Ltd is the national organisation for the steel construction industry: its Member companies undertake the design, fabrication and…” Source: RevenueBase Database · checked Sep 30, 2026
7	Fmdc LTD	Indirect evidence	London, United KingdomHQ checked Sep 30, 2026	11-50	35 contacts →
	Indirect evidence “FMDC are the leading design and engineering consultancy for facades and building materials.” Source: RevenueBase Database · checked Sep 30, 2026
8	Schneider GB LTD	Indirect evidence	London, United KingdomHQ checked Sep 30, 2026	11-50	19 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 30, 2026
9	Gladious Limited	Indirect evidence	London, United KingdomHQ checked Sep 30, 2026	11-50	18 contacts →
	Indirect evidence “Gladious Ltd is multi specialist facade contractor providing variety of installation, management and maintenance services related to glazing, cladding and metalwork on and inside…” Source: RevenueBase Database · checked Sep 30, 2026
10	The Steel Team Limited	Partial evidence	London, United KingdomHQ checked Sep 30, 2026	1-10	16 contacts →
	Partial evidence “The Steel Team is a family owned company offering our clients the very best in steelwork solutions.” Source: RevenueBase Database · checked Sep 30, 2026
11	Maksons Metal Engineering	Partial evidence	London, United KingdomHQ checked Sep 30, 2026	11-50	16 contacts →
	Partial evidence “Maksons is a reputable and long established steel fabricator offering services across the UK.” Source: RevenueBase Database · checked Sep 30, 2026
12	Cladup Design LTD	Indirect evidence	London, United KingdomHQ checked Sep 30, 2026	11-50	15 contacts →
	Indirect evidence “CladUp Design Ltd is a design Engineering studio which specialises in Facade design with experience of Rainscreen cladding, Precast facade, GRC panels, Window/Doors and curtain…” Source: RevenueBase Database · checked Sep 30, 2026
13	MAH Steel Limited	Partial evidence	London, United KingdomHQ checked Sep 30, 2026	1-10	14 contacts →
	Partial evidence “About Us MAH Steel is a steel fabrication specialist offering our product across the South East of England.” Source: RevenueBase Database · checked Sep 30, 2026
14	SGS Steel And Glass Solutions	Strong evidence	London, United KingdomHQ checked Sep 30, 2026	11-50	13 contacts →
	Strong evidence “With over 20 years’ experience in architectural metalwork the Steel & Glass Solutions team take great pride in delivering the highest quality solution to every situation.” Source: RevenueBase Database · checked Sep 30, 2026
15	Cake Industries	Partial evidence	London, United KingdomHQ checked Sep 30, 2026	11-50	11 contacts →
	Partial evidence “Cake Industries combines the industrial design, architectural, and structural engineering skills of the directors to produce high quality, bespoke projects for a variety of…” Source: RevenueBase Database · checked Sep 30, 2026
16	Intersteels LTD	Indirect evidence	London, United KingdomHQ checked Sep 30, 2026	51-200	11 contacts →
	Indirect evidence “Intersteels Ltd is a construction company based out of Landau Way, Darent Industrial Park, London, United Kingdom.” Source: RevenueBase Database · checked Sep 30, 2026
17	Frixos Metal Works Limited	Indirect evidence	London, United KingdomHQ checked Sep 30, 2026	1-10	11 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 30, 2026
18	Apex Steel Structures	Partial evidence	London, United KingdomHQ checked Sep 30, 2026	11-50	10 contacts →
	Partial evidence “30 Years of Strength in Steel** Formed in 1995, our integrated design, production and management teams have the engineering expertise to deliver a variety of projects in various…” Source: RevenueBase Database · checked Sep 30, 2026
19	Metallico LTD	Partial evidence	London, United KingdomHQ checked Sep 30, 2026	11-50	7 contacts →
	Partial evidence “We at Metallico Ltd are London based steel fabricators and steel frame erectors.” Source: RevenueBase Database · checked Sep 30, 2026
20	MTJ Builders LTD	Indirect evidence	London, United KingdomHQ checked Sep 30, 2026	51-200	6 contacts →
	Indirect evidence “Specialists in Facades and Internal Fit Outs, MTJ have over 60 years combined experience within the construction industry.” Source: RevenueBase Database · checked Sep 30, 2026
21	CML Steel LTD	Partial evidence	London, United KingdomHQ checked Sep 30, 2026	11-50	5 contacts →
	Partial evidence “Steel Fabrication & Steel Supply.” Source: RevenueBase Database · checked Sep 30, 2026
22	Glaze London	Partial evidence	London, United KingdomHQ checked Sep 30, 2026	11-50	5 contacts →
	Partial evidence “GLAZE LONDON is a specialist provider of architectural glazing and fenestration solutions for both residential and commercial projects across the UK.” Source: RevenueBase Database · checked Sep 30, 2026
23	S&i Construction LTD	Indirect evidence	London, United KingdomHQ checked Sep 30, 2026	11-50	5 contacts →
	Indirect evidence “Our team of trained personnel are mindful of client image and are dedicated to providing a one stop alternative for all your facade installation requirements.” Source: RevenueBase Database · checked Sep 30, 2026
24	KP Engineering Works LTD	Partial evidence	London, United KingdomHQ checked Sep 30, 2026	1-10	5 contacts →
	Partial evidence “KP Engineering Works Ltd is a manufacturer and installer of quality steel fabrications such as grilles, gates, railings, staircases, handrails, juliet railings, balconies &…” Source: RevenueBase Database · checked Sep 30, 2026
25	Skonto Plan UK LTD	Indirect evidence	London, United KingdomHQ checked Sep 30, 2026	51-200	5 contacts →
	Indirect evidence “Design, fabrication and installation of bespoke unitised and stick facade systems.” Source: RevenueBase Database · checked Sep 30, 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: architectural steel 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 architectural steel companies.
Partial evidence: Its own public description names part of architectural steel companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name architectural steel 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 117 architectural steel companies based in London, United Kingdom

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Architectural steel companies based in London, United Kingdom at a glance

As of Sep 30, 2026

33.7%Verified-email coverage

10.4Average contacts per company

11-50Median size (employees)

Sep 30, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

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 117 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 architectural steel 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 “architectural steel 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 architectural steel 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 architectural steel 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, 408 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 30, 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 architectural steel 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 architectural steel companies are there based in London, United Kingdom?

RevenueBase identified 117 architectural steel 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?

Josef Gartner, headquartered in London, tops this list with the largest team on record.

Which city in the United Kingdom has the most architectural steel companies?

London leads the United Kingdom with 117 headquartered companies, followed by Sheffield (15) and Derby (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 408 verified decision-maker contacts tracked across these 117 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 30, 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.