Company lists · Data refreshed September 2026

Top 25 Branch transformation consulting firms based in the United Kingdom

RevenueBase identified 696 branch transformation consulting firms headquartered in the United Kingdom as of September 2026 and tracks 8,543 professional contacts across them, including 4,210 with verified work emails. London is the largest hub.

This list covers branch transformation 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 27, 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 27, 2026 86% judged on-target in blind review
696Companies
8,543Contacts tracked
4,210Verified emails
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The 25 largest branch transformation consulting firms based in the United Kingdom

Ranked by team size
Top 25 of 696 branch transformation consulting firms based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 27, 2026. RevenueBase Smart Search rates how each company's information relates to branch transformation consulting 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceLondon, United KingdomHQ checked Sep 27, 2026501-1,0001,011 contacts →

Indirect evidence

“At OC & C Strategy Consultants we have more than 35 years of experience at unpicking the most complex business challenges with simple, uncommon sense™.”

Source: RevenueBase Database · checked Sep 27, 2026
2Partial evidenceLondon, United KingdomHQ checked Sep 27, 20265,001-10,000329 contacts →

Partial evidence

“We are the global consulting division of Davies, accelerating business, technology and people performance across financial services including Retail Finance & Corporate Banking…”

Source: RevenueBase Database · checked Sep 27, 2026
3Partial evidenceLondon, United KingdomHQ checked Sep 27, 2026201-500302 contacts →

Partial evidence

“Cartesian is a specialist consulting firm focused on the global telecommunications, media, and technology industries and is now part of Bounteous, an AI services firm helping…”

Source: RevenueBase Database · checked Sep 27, 2026
4Partial evidenceLondon, United KingdomHQ checked Sep 27, 2026501-1,000275 contacts →

Partial evidence

“An award-winning global consulting firm working with clients across a diverse range of markets, industries and geographies.”

Source: RevenueBase Database · checked Sep 27, 2026
5Partial evidenceLondon, United KingdomHQ checked Sep 27, 2026201-500247 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 27, 2026
6Partial evidenceLondon, United KingdomHQ checked Sep 27, 2026201-500240 contacts →

Partial evidence

“Albany Beck is a client-first consulting firm helping financial services organisations deliver complex change and build capability, not dependency.”

Source: RevenueBase Database · checked Sep 27, 2026
7Indirect evidenceLondon, United KingdomHQ checked Sep 27, 2026201-500178 contacts →

Indirect evidence

“The future has never moved this fast.”

Source: RevenueBase Database · checked Sep 27, 2026
8Indirect evidenceMilton Keynes, United KingdomHQ checked Sep 27, 202651-200166 contacts →

Indirect evidence

“In an uncertain, complex, and ambiguous world, business change is essential and inevitable.”

Source: RevenueBase Database · checked Sep 27, 2026
9Indirect evidenceLondon, United KingdomHQ checked Sep 27, 2026n/a165 contacts →

Indirect evidence

“Strategic development for already dynamic businesses, successful mergers & acquisitions between household names, technology planning in cutting edge industries and real-world…”

Source: RevenueBase Database · checked Sep 27, 2026
10Indirect evidenceLiverpool Street, United KingdomHQ checked Sep 27, 2026201-500158 contacts →

Indirect evidence

“Contino joined the Cognizant family in 2019.”

Source: RevenueBase Database · checked Sep 27, 2026
11Partial evidenceLondon, United KingdomHQ checked Sep 27, 202651-200152 contacts →

Partial evidence

“Founded in 1990, The Berkeley Partnership is an independent management consultancy, specialising in business transformation.”

Source: RevenueBase Database · checked Sep 27, 2026
12Indirect evidenceLondon (uk), United KingdomHQ checked Sep 27, 202651-200142 contacts →

Indirect evidence

“At Sysdoc we exist to help our clients to transform, adapt and operate in order for them to achieve their ambitions, and to provide our own people with opportunities that allow…”

Source: RevenueBase Database · checked Sep 27, 2026
13Indirect evidenceLondon, United KingdomHQ checked Sep 27, 20261,001-5,000139 contacts →

Indirect evidence

“We believe that change is an opportunity to thrive.”

Source: RevenueBase Database · checked Sep 27, 2026
14Partial evidenceLondon, United KingdomHQ checked Sep 27, 202651-200123 contacts →

Partial evidence

“Specialists in change and transformation across asset, wealth and insurance.”

Source: RevenueBase Database · checked Sep 27, 2026
15Indirect evidenceLondon, United KingdomHQ checked Sep 27, 202611-50122 contacts →

Indirect evidence

“Athens helps clients make superior investment decisions and supports them to deliver value from these decisions through timely implementation.”

Source: RevenueBase Database · checked Sep 27, 2026
16Indirect evidenceLondon, United KingdomHQ checked Sep 27, 202651-200115 contacts →

Indirect evidence

“Oaklin is an independent management consultancy.”

Source: RevenueBase Database · checked Sep 27, 2026
17Partial evidenceLondon, United KingdomHQ checked Sep 27, 202651-200101 contacts →

Partial evidence

“Isle’s vision is to be the leading catalyst in water industry transformation through exceptional business insight, technology, and innovative solutions.”

Source: RevenueBase Database · checked Sep 27, 2026
18Partial evidenceLondon, United KingdomHQ checked Sep 27, 202651-20094 contacts →

Partial evidence

“Valentia Partners is a specialist Management Consulting firm.”

Source: RevenueBase Database · checked Sep 27, 2026
19Indirect evidenceLeeds, United KingdomHQ checked Sep 27, 202651-20085 contacts →

Indirect evidence

“Abstract is a technology company founded in 2017, headquartered in Leeds, with delivery reach across the UK, Europe, and India.”

Source: RevenueBase Database · checked Sep 27, 2026
20Partial evidenceLondon, United KingdomHQ checked Sep 27, 202651-20075 contacts →

Partial evidence

“We redefined management consulting to make it better for clients and better for consultants.”

Source: RevenueBase Database · checked Sep 27, 2026
21Indirect evidenceLondon, United KingdomHQ checked Sep 27, 202651-20061 contacts →

Indirect evidence

“We’re not your typical consultancy.”

Source: RevenueBase Database · checked Sep 27, 2026
22Indirect evidenceLondon, United KingdomHQ checked Sep 27, 202651-20059 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 27, 2026
23Strong evidenceGreat Missenden, United KingdomHQ checked Sep 27, 202651-20056 contacts →

Strong evidence

“First Friday is a consulting, change management and training business specialising in systems transformations, retail consulting and capability building.”

Source: RevenueBase Database · checked Sep 27, 2026
24Partial evidenceLondon, United KingdomHQ checked Sep 27, 202651-20055 contacts →

Partial evidence

“Albida’s core focus is business transformation.”

Source: RevenueBase Database · checked Sep 27, 2026
25Strong evidenceLondon, United KingdomHQ checked Sep 27, 202651-20053 contacts →

Strong evidence

“We’re a technology and transformation consulting partner that helps organisations accelerate change with confidence.”

Source: RevenueBase Database · checked Sep 27, 2026

Showing 25 of 696 branch transformation consulting firms based in the United Kingdom

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Branch transformation consulting firms based in the United Kingdom at a glance

As of Sep 27, 2026
49.3%Verified-email coverage
12.3Average contacts per company
1-10Median size (employees)
55.9%Largest-city concentration · London
Sep 27, 2026Page data refreshed

Companies by employee count

1-10
474
11-50
144
51-200
52
201-500
13
501-1,000
4
1,001-5,000
6
5,001-10,000
2

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 696 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 branch transformation consulting 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 the United Kingdom whose own description of what they do matches “branch transformation consulting 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 branch transformation consulting 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 branch transformation 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 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, 4,210 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 27, 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 branch transformation consulting 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 branch transformation consulting firms are there based in the United Kingdom?

RevenueBase identified 696 branch transformation consulting firms headquartered in the 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?

Oc&c Strategy Consultants, headquartered in London, tops this list with the largest team on record.

Which city has the most branch transformation consulting firms?

London leads with 389 headquartered companies, followed by Manchester (10) and Bristol (9).

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 4,210 verified decision-maker contacts tracked across these 696 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 27, 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.