Company lists · Data refreshed September 2026

Top 24 IT consulting partners based in London, United Kingdom

RevenueBase identified 2,510 IT consulting partners headquartered in London, United Kingdom as of September 2026 and tracks 72,654 professional contacts across them, including 28,696 with verified work emails. Across the United Kingdom, London is the largest hub for this category.

This list covers IT consulting partners 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 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
2,510Companies
72,654Contacts tracked
28,696Verified emails
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The 24 largest IT consulting partners based in London, United Kingdom

Ranked by team size
Top 24 of 2,510 IT consulting partners based in London, United Kingdom, ranked by team size, largest first. Data refreshed Sep 27, 2026. RevenueBase Smart Search rates how each company's information relates to IT consulting partners: 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, 202610001+9,653 contacts →

Indirect evidence

“For over two decades, we have been harnessing technology to drive meaningful change.”

Source: RevenueBase Database · checked Sep 27, 2026
2Indirect evidenceLondon, United KingdomHQ checked Sep 27, 20265,001-10,0007,396 contacts →

Indirect evidence

“Capco, a Wipro company, is a global technology and management consultancy specializing in driving digital transformation in the financial services industry.”

Source: RevenueBase Database · checked Sep 27, 2026
3Indirect evidenceLondon, United KingdomHQ checked Sep 27, 20265,001-10,0005,203 contacts →

Indirect evidence

“Photon, a global leader in AI and digital solutions, helps clients accelerate AI adoption and embrace DigitalHyper-expansion® to ‘make tomorrow happen today’.”

Source: RevenueBase Database · checked Sep 27, 2026
4Indirect evidenceLondon, United KingdomHQ checked Sep 27, 20261,001-5,0001,611 contacts →

Indirect evidence

“We are experts in technology, delivering smart solutions that solve business challenges and create value.”

Source: RevenueBase Database · checked Sep 27, 2026
5Indirect evidenceLondon, United KingdomHQ checked Sep 27, 20265,001-10,0001,508 contacts →

Indirect evidence

“Noventiq (Noventiq Holdings PLC) is a leading global solutions and services provider in digital transformation and cybersecurity, headquartered in London.”

Source: RevenueBase Database · checked Sep 27, 2026
6Partial evidenceLondon, United KingdomHQ checked Sep 27, 20261,001-5,0001,417 contacts →

Partial evidence

“K2 Partnering Solutions is a global provider of unique end-to-end consultative solutions in the enterprise applications, AI, and cloud space.”

Source: RevenueBase Database · checked Sep 27, 2026
7Indirect evidenceLondon, United KingdomHQ checked Sep 27, 20261,001-5,0001,178 contacts →

Indirect evidence

“Genisys Group is a new age global information technology and business process services company.”

Source: RevenueBase Database · checked Sep 27, 2026
8Indirect evidenceLondon, United KingdomHQ checked Sep 27, 20261,001-5,0001,172 contacts →

Indirect evidence

“We are honoured to be recognised as one of the Top 10 Best Places to Work in the UK for the third year running, according to Glassdoor’s prestigious 2026 list.”

Source: RevenueBase Database · checked Sep 27, 2026
9Partial evidenceLondon, United KingdomHQ checked Sep 27, 20261,001-5,000976 contacts →

Partial evidence

“Delta Capita is a leading global Capital Markets consulting, managed services, and technology provider with a unique combination of experience in financial services and capability…”

Source: RevenueBase Database · checked Sep 27, 2026
10Indirect evidenceLondon, United KingdomHQ checked Sep 27, 20261,001-5,000910 contacts →

Indirect evidence

“We empower people to create sustainable value with the clever use of technology.”

Source: RevenueBase Database · checked Sep 27, 2026
11Indirect evidenceLondon, United KingdomHQ checked Sep 27, 2026501-1,000742 contacts →

Indirect evidence

“Kerv exists to use the power of technology for good: for our customers, our people, our communities and the planet.”

Source: RevenueBase Database · checked Sep 27, 2026
12Indirect evidenceLondon, United KingdomHQ checked Sep 27, 20265,001-10,000697 contacts →

Indirect evidence

“Follow us now at WPP Enterprise Solutions, WPP’s global business transformation unit, designing, building and operating the growth systems that competitive businesses rely on.”

Source: RevenueBase Database · checked Sep 27, 2026
13Indirect evidenceLondon, United KingdomHQ checked Sep 27, 2026201-500545 contacts →

Indirect evidence

“At Acuvate, we empower enterprises to accelerate their Next gen transformation journeys with an AI-First approach.”

Source: RevenueBase Database · checked Sep 27, 2026
14Indirect evidenceLondon, United KingdomHQ checked Sep 27, 2026501-1,000422 contacts →

Indirect evidence

“Our team of world-class professionals across the globe work together to innovate and enable sustainable business transformation.”

Source: RevenueBase Database · checked Sep 27, 2026
15Indirect evidenceLondon, United KingdomHQ checked Sep 27, 2026501-1,000408 contacts →

Indirect evidence

“Zenitech creates technology to transform businesses.”

Source: RevenueBase Database · checked Sep 27, 2026
16Partial evidenceLondon, United KingdomHQ checked Sep 27, 2026501-1,000401 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 27, 2026
17Indirect evidenceLondon, United KingdomHQ checked Sep 27, 20265,001-10,000400 contacts →

Indirect evidence

“Kin + Carta was acquired by Valtech in 2024.”

Source: RevenueBase Database · checked Sep 27, 2026
18Indirect evidenceLondon, United KingdomHQ checked Sep 27, 2026201-500398 contacts →

Indirect evidence

“We’re Connect, a global systems integrator and digital transformation expert with over 35 years of experience.”

Source: RevenueBase Database · checked Sep 27, 2026
19Indirect evidenceLondon, United KingdomHQ checked Sep 27, 2026201-500363 contacts →

Indirect evidence

“We are a global niche consultancy specialising in services that span all facets of Digital transformation, DevOps, and System Integration.”

Source: RevenueBase Database · checked Sep 27, 2026
20Indirect evidenceLondon, United KingdomHQ checked Sep 27, 2026201-500360 contacts →

Indirect evidence

“Softwire exists to help organisations use technology to deliver meaningful outcomes and a positive impact for themselves, their users and the world.”

Source: RevenueBase Database · checked Sep 27, 2026
21Partial 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
22Indirect evidenceLondon, United KingdomHQ checked Sep 27, 202651-200305 contacts →

Indirect evidence

“We are digital transformation specialists, on a mission to make our society an easier and more equitable place for people to live, work and thrive.”

Source: RevenueBase Database · checked Sep 27, 2026
23Partial 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
24Partial evidenceLondon, United KingdomHQ checked Sep 27, 2026201-500286 contacts →

Partial evidence

“At Total IT Global, we elevate your digital journey with cutting-edge innovation, to achieve your vision of ‘the enterprise of the future’.”

Source: RevenueBase Database · checked Sep 27, 2026

Showing 24 of 2,510 IT consulting partners based in London, United Kingdom

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IT consulting partners based in London, United Kingdom at a glance

As of Sep 27, 2026
39.5%Verified-email coverage
28.9Average contacts per company
1-10Median size (employees)
Sep 27, 2026Page data refreshed

Companies by employee count

1-10
1,461
11-50
652
51-200
260
201-500
58
501-1,000
15
1,001-5,000
30
5,001-10,000
16
10001+
11

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 2,510 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 IT consulting partners, 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 “IT consulting partners”. 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 IT consulting partners), 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 IT consulting partners, 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, 28,696 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 IT consulting partners, 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 IT consulting partners are there based in London, United Kingdom?

RevenueBase identified 2,510 IT consulting partners 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?

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

Which city in the United Kingdom has the most IT consulting partners?

London leads the United Kingdom with 2,510 headquartered companies, followed by Manchester (142) and Birmingham (87).

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 28,696 verified decision-maker contacts tracked across these 2,510 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.