Company lists · Data refreshed September 2026

Top 25 Heritage architecture firms based in London, United Kingdom

Name: Heritage architecture firms based in London, United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 16, 2026 480 companies tracked

RevenueBase identified 480 heritage architecture firms headquartered in London, United Kingdom as of September 2026 and tracks 5,335 professional contacts across them, including 2,171 with verified work emails. London is the largest hub.

This list covers heritage architecture firms 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 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

480Companies

5,335Contacts tracked

2,171Verified emails

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The 25 largest heritage architecture firms based in London, United Kingdom

Ranked by team size

Top 25 of 480 heritage architecture firms based in London, United Kingdom, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to heritage architecture firms: 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	Purcell	Partial evidence	London, United KingdomHQ checked Sep 16, 2026	201-500	386 contacts →
	Partial evidence “We work as one family of many experts: architects, designers, heritage leaders and specialist consultants.” Source: RevenueBase Database · checked Sep 16, 2026
2	Mola Museum Of London Archaeology	Partial evidence	London, United KingdomHQ checked Sep 16, 2026	201-500	264 contacts →
	Partial evidence “We are an innovative archaeology and built heritage practice with 50 years of experience in the sector.” Source: RevenueBase Database · checked Sep 16, 2026
3	ZRP	Indirect evidence	London, United KingdomHQ checked Sep 16, 2026	n/a	227 contacts →
	Indirect evidence “ZRP are a young enthusiastic design studio, based in Clerkenwell, London.” Source: RevenueBase Database · checked Sep 16, 2026
4	1508 London	Indirect evidence	London, United KingdomHQ checked Sep 16, 2026	51-200	175 contacts →
	Indirect evidence “Bespoke.” Source: RevenueBase Database · checked Sep 16, 2026
5	Walter Lilly	Partial evidence	London, United KingdomHQ checked Sep 16, 2026	51-200	131 contacts →
	Partial evidence “Our specialist teams deliver high quality construction services for the finest landmark and heritage buildings, alongside state-of-the-art science and higher education facilities.” Source: RevenueBase Database · checked Sep 16, 2026
6	Paye Stonework & Restoration LTD	Indirect evidence	London, United KingdomHQ checked Sep 16, 2026	51-200	97 contacts →
	Indirect evidence “Paye Stonework and Restoration are one of the UK’s leading companies in the field of high quality stone and brick facades, refurbishment and adaptation of historic buildings.” Source: RevenueBase Database · checked Sep 16, 2026
7	Eric Parry Architects	Indirect evidence	London, United KingdomHQ checked Sep 16, 2026	51-200	95 contacts →
	Indirect evidence “Eric Parry Architects & its Singapore Studio is an established and award-winning practice with a portfolio of notable work.” Source: RevenueBase Database · checked Sep 16, 2026
8	Szerelmey	Indirect evidence	London, United KingdomHQ checked Sep 16, 2026	51-200	91 contacts →
	Indirect evidence “Szerelmey was founded in 1855 and is one of the oldest established restoration and new build specialist contractors.” Source: RevenueBase Database · checked Sep 16, 2026
9	Alan Baxter LTD	Indirect evidence	London, United KingdomHQ checked Sep 16, 2026	51-200	87 contacts →
	Indirect evidence “We believe that a holistic approach creates better buildings and healthier places to live and work.” Source: RevenueBase Database · checked Sep 16, 2026
10	Conisbee	Indirect evidence	London, United KingdomHQ checked Sep 16, 2026	51-200	73 contacts →
	Indirect evidence “Conisbee is an award winning structural and civil engineering design practice with offices in London, Norwich Cambridge and Colchester.” Source: RevenueBase Database · checked Sep 16, 2026
11	John Robertson Architects	Partial evidence	London, United KingdomHQ checked Sep 16, 2026	51-200	73 contacts →
	Partial evidence “JRA is a forward-thinking and dynamic architectural practice, built on firm foundations with a commitment to people, place, and planet.” Source: RevenueBase Database · checked Sep 16, 2026
12	Formation Architects	Partial evidence	London, United KingdomHQ checked Sep 16, 2026	51-200	67 contacts →
	Partial evidence “Formation Architects is an established AJ100 architectural practice.” Source: RevenueBase Database · checked Sep 16, 2026
13	APT	Partial evidence	London, United KingdomHQ checked Sep 16, 2026	51-200	67 contacts →
	Partial evidence “Apt is an architectural practice underpinned by a creative and collaborative approach.” Source: RevenueBase Database · checked Sep 16, 2026
14	Stonewest LTD	Partial evidence	London, United KingdomHQ checked Sep 16, 2026	51-200	66 contacts →
	Partial evidence “PROTECTING OUR HERITAGE, CRAFTING OUR FUTURE We are an International, Award-winning Principal & Specialist Contractor, specialising in Building Conservation, Restoration & New…” Source: RevenueBase Database · checked Sep 16, 2026
15	Feilden Mawson	Indirect evidence	London, United KingdomHQ checked Sep 16, 2026	51-200	53 contacts →
	Indirect evidence “Welcome to Feilden+Mawson.” Source: RevenueBase Database · checked Sep 16, 2026
16	Child Graddon Lewis	Indirect evidence	London, United KingdomHQ checked Sep 16, 2026	11-50	52 contacts →
	Indirect evidence “Child Graddon Lewis are Architects and Designers who operate across all areas of the built environment.” Source: RevenueBase Database · checked Sep 16, 2026
17	Imaker Group	Indirect evidence	London, United KingdomHQ checked Sep 16, 2026	51-200	49 contacts →
	Indirect evidence “Founded in 2017 by architects Baraa AlRefai and Ahmed AlRefai, iMaker Group is an award-winning firm specializing in high-end residential, hospitality, and commercial…” Source: RevenueBase Database · checked Sep 16, 2026
18	Axiom Architects LLP	Indirect evidence	London, United KingdomHQ checked Sep 16, 2026	11-50	44 contacts →
	Indirect evidence “Axiom Architects is a leading practice in the hotel sector with offices in London, Lewes and Exeter.” Source: RevenueBase Database · checked Sep 16, 2026
19	ESA Architecture	Partial evidence	London, United KingdomHQ checked Sep 16, 2026	11-50	43 contacts →
	Partial evidence “ESA Architecture, member of WSP, has a long and distinguished history and has been established for over 100 years with offices in London and Manchester.” Source: RevenueBase Database · checked Sep 16, 2026
20	Atellior	Partial evidence	London, United KingdomHQ checked Sep 16, 2026	11-50	37 contacts →
	Partial evidence “Atellior is an architecture and interior design studio with extensive international experience in the luxury residential and hospitality sectors.” Source: RevenueBase Database · checked Sep 16, 2026
21	Interiors With ART LTD	Indirect evidence	London, United KingdomHQ checked Sep 16, 2026	51-200	37 contacts →
	Indirect evidence “IWA is a luxury construction and interior design firm first launched in 2002.” Source: RevenueBase Database · checked Sep 16, 2026
22	BDG Architecture Design	Partial evidence	London, United KingdomHQ checked Sep 16, 2026	51-200	37 contacts →
	Partial evidence “BDG architecture + design is an international consultancy focusing on strategy, architecture and design for corporate, public sector and education clients for new build…” Source: RevenueBase Database · checked Sep 16, 2026
23	Avanti Architects	Indirect evidence	London, United KingdomHQ checked Sep 16, 2026	11-50	31 contacts →
	Indirect evidence “Avanti Architects is a London-based practice established in 1981.” Source: RevenueBase Database · checked Sep 16, 2026
24	Emrys Architects	Partial evidence	London, United KingdomHQ checked Sep 16, 2026	11-50	28 contacts →
	Partial evidence “Emrys are an architectural practice based in Smithfield, Central London.” Source: RevenueBase Database · checked Sep 16, 2026
25	Aros Architects	Partial evidence	London, United KingdomHQ checked Sep 16, 2026	11-50	27 contacts →
	Partial evidence “Aros produces architecture that works.” 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: heritage architecture firms. 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 heritage architecture firms.
Partial evidence: Its own public description names part of heritage architecture firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name heritage architecture firms. 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 480 heritage architecture firms based in London, United Kingdom

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Heritage architecture firms based in London, United Kingdom at a glance

As of Sep 16, 2026

40.7%Verified-email coverage

11.1Average contacts per company

1-10Median size (employees)

100.0%Largest-city concentration · London

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

322

11-50

124

51-200

201-500

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 480 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 heritage architecture firms, 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 “heritage architecture firms”. 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 heritage architecture firms), 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 heritage architecture firms, 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, 2,171 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.

Heritage architecture firms by metro in the United Kingdom

Heritage architecture firms in London480
Heritage architecture firms in Edinburgh34
Heritage architecture firms in Bristol32
Heritage architecture firms in Birmingham28

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 heritage architecture firms, 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 heritage architecture firms are there based in London, United Kingdom?

RevenueBase identified 480 heritage architecture firms 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?

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

Which city has the most heritage architecture firms?

London leads with 480 headquartered companies, followed by Edinburgh (34) and Bristol (32).

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 2,171 verified decision-maker contacts tracked across these 480 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.