Company lists · Data refreshed September 2026

Top 25 IT consulting support companies based in London, United Kingdom

Name: IT consulting support 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 27, 2026 1,439 companies tracked

RevenueBase identified 1,439 company matches for IT consulting support companies associated with London, United Kingdom as of September 2026 and tracks 23,996 professional contacts across them, including 11,033 with verified work emails. Across the United Kingdom, London is the largest hub for this category.

This list covers company matches for IT consulting support companies associated with London, United Kingdom, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 27, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Sep 27, 2026 How this list was built

1,439Companies

23,996Contacts tracked

11,033Verified emails

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The 25 largest IT consulting support companies based in London, United Kingdom

Ranked by team size

Top 25 of 1,439 company matches for IT consulting support companies based in London, United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 27, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Endava	Exact match	London, United KingdomHQ recorded Sep 27, 2026	10001+	9,653 contacts →
	Exact match “For over two decades, we have been harnessing technology to drive meaningful change.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
2	Exponential-E	Exact match	London, United KingdomHQ recorded Sep 27, 2026	501-1,000	667 contacts →
	Exact match “Innovation is at the core of Exponential-e, and has been since our inception in 2002.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
3	Zenzero	Exact match	London, United KingdomHQ recorded Sep 27, 2026	501-1,000	401 contacts →
	Exact match “We believe successful businesses are underpinned by quality IT infrastructure.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
4	Maintel	Exact match	London, United KingdomHQ recorded Sep 27, 2026	201-500	341 contacts →
	Exact match “Maintel is a communications managed services provider.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
5	Cartesian	Exact match	London, United KingdomHQ recorded Sep 27, 2026	201-500	302 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
6	Total IT Global	Exact match	London, United KingdomHQ recorded Sep 27, 2026	201-500	286 contacts →
	Exact match “At Total IT Global, we elevate your digital journey with cutting-edge innovation, to achieve your vision of ‘the enterprise of the future’.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
7	Flat Rock Technology	Exact match	London, United KingdomHQ recorded Sep 27, 2026	201-500	231 contacts →
	Exact match “Since 2008, Flat Rock Technology, a software engineering, SI, Cloud DevOps, Cyber Security, and Customer Experience (CX) company, has been at the forefront of providing innovative…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
8	Wanstor	Exact match	London, United KingdomHQ recorded Sep 27, 2026	201-500	227 contacts →
	Exact match “Wanstor: Experience First \| AI Fluent \| Secure by Default Wanstor is a trusted Managed IT Services company that helps ambitious organisations leverage technology to achieve better…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
9	Cisilion	Exact match	London, United KingdomHQ recorded Sep 27, 2026	51-200	194 contacts →
	Exact match “Combining market-leading tech with world-class service, we go above and beyond expectations to ensure our clients are ready for a digital future.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
10	Deepscale Technologies LTD	Exact match	London, United KingdomHQ recorded Sep 27, 2026	51-200	141 contacts →
	Exact match “Deepscale Technologies provide data center, enterprise & managed IT solutions across the globe that enhance how businesses operate.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
11	IBU	Exact match	London, United KingdomHQ recorded Sep 27, 2026	1,001-5,000	139 contacts →
	Exact match “We are the most trusted consulting & Information Technology service partner, who has been thriving hard to deliver customer-centric and proven global competence to our clients all…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
12	Opticoreit	Exact match	London, United KingdomHQ recorded Sep 27, 2026	51-200	120 contacts →
	Exact match “OpticoreIT is an IT Consultancy founded in 2013 to bridge a gap in the market between the major IT services providers and the consultancy market.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
13	Glue Reply	Exact match	London, United KingdomHQ recorded Sep 27, 2026	51-200	118 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
14	TDM Group	Exact match	London, United KingdomHQ recorded Sep 27, 2026	51-200	115 contacts →
	Exact match “TDM Group Ltd is a global Managed Business IT Service (M-BiTS) provider – our holistic approach to managing and implementing IT considers the impact technology has on the entire…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
15	Conosco	Exact match	London, United KingdomHQ recorded Sep 27, 2026	51-200	105 contacts →
	Exact match “Cybersecurity specialists providing technology and telecoms solutions that gives you the leadership, experience and resilience you need to build and secure the future of work.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
16	Techary	Exact match	London, United KingdomHQ recorded Sep 27, 2026	51-200	102 contacts →
	Exact match “At Techary, we believe technology should move as fast as your business.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
17	Oryxalign	Exact match	London, United KingdomHQ recorded Sep 27, 2026	51-200	99 contacts →
	Exact match “OryxAlign creates true alignment that delivers the right outcomes for all.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
18	Matsco Solutions	Exact match	London, United KingdomHQ recorded Sep 27, 2026	51-200	96 contacts →
	Exact match “Matsco Solutions is a global managed IT service provider built exclusively for the financial services industry.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
19	Geecon Systems	Exact match	London, United KingdomHQ recorded Sep 27, 2026	51-200	92 contacts →
	Exact match “Headquartered in London, United Kingdom, Geecon combines a passion for Client Satisfaction, Technology Innovation, Business and Management Consultancy, Software Solution and IT…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
20	Sysgroup	Exact match	London, United KingdomHQ recorded Sep 27, 2026	51-200	89 contacts →
	Exact match “SysGroup is the services leader for realising AI transformation, as an award-winning managed IT services, cloud hosting, and IT consultancy provider.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
21	Constor Solutions	Exact match	London, United KingdomHQ recorded Sep 27, 2026	51-200	87 contacts →
	Exact match “At Constor Solutions, we believe that technology is the backbone of a successful business.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
22	SAT Microsystems	Exact match	London, United KingdomHQ recorded Sep 27, 2026	51-200	84 contacts →
	Exact match “SAT Microsystems is a proven IT Service Provider leader in developing innovative solutions that reduce business costs and complexity in Saudi Arabia, UAE, and 8 other countries.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
23	Hybytes	Exact match	London, United KingdomHQ recorded Sep 27, 2026	201-500	79 contacts →
	Exact match “Hybytes is an offshore/domestic solution provider for IT and Management to business and industry.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
24	Baseel Partners	Exact match	London, United KingdomHQ recorded Sep 27, 2026	1,001-5,000	78 contacts →
	Exact match “We offer a broad portfolio of IT and consulting services covering Governance and Strategy, Cloud, Data, Cybersecurity, Infrastructure and Applications, Managed IT and Security.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
25	Instant On IT	Exact match	London, United KingdomHQ recorded Sep 27, 2026	51-200	69 contacts →
	Exact match “Helping businesses accomplish more IT Management, Strategy and Cloud, IT Security and AI Solutions Office locations: Central London, New Zealand” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “IT consulting support companies”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 1,439 IT consulting support companies based in London, United Kingdom

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IT consulting support companies based in London, United Kingdom at a glance

As of Sep 27, 2026

46.0%Verified-email coverage

16.7Average contacts per company

1-10Median size (employees)

Sep 27, 2026Page data refreshed

Companies by employee count

1-10

838

11-50

413

51-200

134

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 1,439 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Company records associated with London, United Kingdom whose business descriptions match “IT consulting support companies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 11,033 professional contacts with verified work emails across the full matched dataset. 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.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

IT consulting support companies by metro in the United Kingdom

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “IT consulting support companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many IT consulting support companies are there based in London, United Kingdom?

RevenueBase identified 1,439 company matches for IT consulting support companies associated with London, United Kingdom as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Endava tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city in the United Kingdom has the most IT consulting support companies?

London leads the United Kingdom with 1,439 company records, followed by Manchester (116) and Birmingham (89).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 11,033 professional contacts with verified work emails tracked across these 1,439 companies; direct dials are available where recorded.

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 SmartSearch, 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.