Company lists · Data refreshed September 2026

Top 25 Enterprise architecture consulting firms based in the United Kingdom

There are 2,296 enterprise architecture consulting firms headquartered in the United Kingdom (RevenueBase, September 2026). RevenueBase tracks 19,260 professional contacts across them, including 6,874 with verified work emails and 1,760 with mobile numbers. London is the largest hub.

This list covers enterprise architecture consulting firms 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, how directly it supports the match, and when it was last checked. Data refreshed September 2, 2026.

2,296Companies
19,260Contacts tracked
6,874Verified emails
1,760Mobile numbers
Unlock all 2,296 companies Free account · no credit card · 2 minutes

The 25 largest enterprise architecture consulting firms based in the United Kingdom

Ranked by team size
Top 25 of 2,296 enterprise architecture consulting firms based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 2, 2026. Evidence rates how directly each company's own description names enterprise architecture consulting firms: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#CompanyHeadquartersEmployeesContactsVerified emails
1
Gspann Technologies, INCStrong evidence

“GSPANN is a US-based consulting services provider focused on implementations in Enterprise Content Management (ECM), Business Intelligence & Mobile Solutioning initiatives.”

Source: company website · checked Sep 2, 2026
London, United Kingdom1,001-5,0001,874754
2
NavigantPartial evidence

“Guidehouse is a leading global provider of consulting services to the public and commercial markets with broad capabilities in management, technology, and risk consulting.”

Source: company website · checked Sep 2, 2026
London, United Kingdom5,001-10,0001,034108
3
VisagioIndirect evidence

“A Visagio Group company.”

Source: company website · checked Sep 2, 2026
Reading, United Kingdom501-1,000976439
4

“Leader Investment Group is a MNC & a worldwide pioneer in Management Consultation, Executive Consultation, Digital Transformation & IT.”

Source: company website · checked Sep 2, 2026
London, United Kingdom501-1,00045242
5
ZenzeroIndirect evidence

“We believe successful businesses are underpinned by quality IT infrastructure.”

Source: company website · checked Sep 2, 2026
Coventry, United Kingdom501-1,000403281
6
H&z Management ConsultingIndirect evidence

“Welcome to H&Z We offer more than successful strategy development.”

Source: company website · checked Sep 2, 2026
London, United Kingdom501-1,000287153
7
SearginIndirect evidence

“Seargin was founded to close the gap between traditional advisory and hands-on delivery - combining strategic insight with deep expertise in ERP, AI and data.”

Source: company website · checked Sep 2, 2026
London, United Kingdom501-1,000275188
8

“We’re a dynamic consulting firm, focused on delivering change.”

Source: company website · checked Sep 2, 2026
London, United Kingdom201-500249148
9
Actica ConsultingPartial evidence

“Actica Consulting is a business and technology consultancy specialising in the delivery of complex transformation.”

Source: company website · checked Sep 2, 2026
Guildford, United Kingdom201-500224153
10
WaterstonsIndirect evidence

“We are an IT business with a difference.”

Source: company website · checked Sep 2, 2026
Durham, United Kingdom201-500223157
11
VervintIndirect evidence

“At Vervint, our purpose is progress.”

Source: company website · checked Sep 2, 2026
London, United Kingdom201-50018988
12
BIP UKIndirect evidence

“BIP is the international consultancy for the 21st century with over 6,500 consultants globally daring to make a difference.”

Source: company website · checked Sep 2, 2026
London, United Kingdom5,001-10,00016585
13

“Contino joined the Cognizant family in 2019.”

Source: company website · checked Sep 2, 2026
United Kingdom201-50015948
14
CyberiamIndirect evidence

“CyberIAM provides the expertise needed for the design and implementation of complex Identity and access management systems.”

Source: company website · checked Sep 2, 2026
Chester, United Kingdom51-200132100
15
Mason Advisory LimitedIndirect evidence

“Mason Advisory Limited (Mason Advisory) is a digital and technology advisory firm providing strategic, technical and commercial advice to organisations across the private and…”

Source: company website · checked Sep 2, 2026
Manchester, United Kingdom51-20012180
16
Glue ReplyIndirect evidence

“WHO WE ARE Glue Reply is a business consultancy that strives to help its clients achieve their future potential by developing solutions that often for the first time align IT…”

Source: company website · checked Sep 2, 2026
London, United Kingdom51-20011846
17
OaklinIndirect evidence

“Oaklin is an independent management consultancy.”

Source: company website · checked Sep 2, 2026
London, United Kingdom51-20011592
18
WohligIndirect evidence

“Wohlig is the catalyst that transforms the clients perspective of technology and empowers them to take advantage of the digital revolution that is constantly evolving.”

Source: company website · checked Sep 2, 2026
London, United Kingdom51-2009916
19
Embridge ConsultingIndirect evidence

“We deliver business transformation through technology-enabled change.”

Source: company website · checked Sep 2, 2026
Northfleet, United Kingdom51-2007756
20
Principle ONEStrong evidence

“Principle One provides Systems Engineering, Architecture and Business Consulting services within the Law Enforcement, National Security, Health and wider public sector.”

Source: company website · checked Sep 2, 2026
London, United Kingdom51-2007744
21
Change Management GroupIndirect evidence

“Whether complex transformation is required across your business or you are seeking support with a small project, we are here to help.”

Source: company website · checked Sep 2, 2026
London, United Kingdom51-2007453
22
6point6 Part Of AccentureIndirect evidence

“6point6 drives the right change in an organisation through the positive impact of technology.”

Source: company website · checked Sep 2, 2026
London, United Kingdom201-5007329
23
Total Computer NetworksIndirect evidence

“Here at Total we are redefining the Modern Technology Partner We don't deliver IT products, we develop long term strategic partnerships.”

Source: company website · checked Sep 2, 2026
Kettering, United Kingdom201-5006749
24
ExcellediaPartial evidence

“Excelledia is a management consulting firm that provides insights, organizational transformation, and business strategy through people, process & technology consulting to clients…”

Source: company website · checked Sep 2, 2026
Birmingham, United Kingdom51-2006325
25
ZiiplineIndirect evidence

“We’re people-first and culture-obsessed.”

Source: company website · checked Sep 2, 2026
London, United Kingdom51-2005941

Showing 25 of 2,296 enterprise architecture consulting firms based in the United Kingdom

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Enterprise architecture consulting firms based in the United Kingdom at a glance

As of Sep 2, 2026
1-10Median size (employees)
LondonLargest hub · 886 HQs
1,760Contacts with mobile numbers
Sep 2, 2026Data refreshed

Companies by employee count

1-10
1,648
11-50
401
51-200
142
201-500
19
501-1,000
10
1,001-5,000
5
5,001-10,000
4

Enterprise architecture consulting firms by metro

MetroCompanies
Enterprise architecture consulting firms in London886
Enterprise architecture consulting firms in Manchester58
Enterprise architecture consulting firms in Leeds28
Enterprise architecture consulting firms in Edinburgh27
Enterprise architecture consulting firms in Birmingham26
Enterprise architecture consulting firms in Bristol26
Enterprise architecture consulting firms in Glasgow26

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 enterprise architecture consulting firms, so some rows will be adjacent to the category rather than pure plays. The description and evidence rating on every row are there so you can check each match yourself.

Source
The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
What qualifies
Companies headquartered in the United Kingdom whose own description of what they do matches “enterprise architecture consulting firms”. Matching reads each company's description, not its industry code or its name.
What we exclude
Companies whose own description does not clearly place them among enterprise architecture consulting firms, 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 an evidence rating so you can judge each match yourself.
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, 6,874 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 2, 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

How many enterprise architecture consulting firms are there based in the United Kingdom?

There are 2,296 enterprise architecture consulting firms headquartered in the United Kingdom as of September 2026 (RevenueBase).

What is the largest company on this list?

Gspann Technologies, INC, headquartered in London, tops this list with the largest team on record.

Which city has the most enterprise architecture consulting firms?

London leads with 886 headquartered companies, followed by Manchester (58) and Leeds (28).

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 6,874 verified decision-maker contacts tracked across these 2,296 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 2, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.