Company lists · Data refreshed September 2026

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

Name: IT consulting and 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 1,405 companies tracked

RevenueBase identified 1,405 company matches for IT consulting and support companies associated with London, United Kingdom as of September 2026 and tracks 25,298 professional contacts across them, including 10,787 with verified work emails. Across the United Kingdom, London is the largest hub for this category.

This list covers company matches for IT consulting and 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

1,405Companies

25,298Contacts tracked

10,787Verified emails

Explore this list → Free signup · no credit card · 500 free credits

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

Ranked by team size

Top 25 of 1,405 company matches for IT consulting and 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	K2 Partnering Solutions	Exact match	London, United KingdomHQ recorded Sep 27, 2026	1,001-5,000	1,417 contacts →
	Exact match “K2 Partnering Solutions is a global provider of unique end-to-end consultative solutions in the enterprise applications, AI, and cloud space.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
3	NSC Global	Exact match	London, United KingdomHQ recorded Sep 27, 2026	1,001-5,000	1,039 contacts →
	Exact match “Global business doesn’t have to be complicated.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
4	Excis Compliance	Exact match	London, United KingdomHQ recorded Sep 27, 2026	1,001-5,000	616 contacts →
	Exact match “Excis is a trusted global IT services company, delivering agile, multilingual support across 150+ countries.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
5	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
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	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
8	operum.tech	Exact match	London, United KingdomHQ recorded Sep 27, 2026	n/a	186 contacts →
	Exact match “IT support for businesses in London.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
9	Interex Group	Exact match	London, United KingdomHQ recorded Sep 27, 2026	51-200	160 contacts →
	Exact match “InterEx Group is becoming the strategic partner of choice for organizations undergoing digital, business, and technology transformation.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
10	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
11	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
12	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
13	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
14	Field Work Technologies LTD	Exact match	London, United KingdomHQ recorded Sep 27, 2026	51-200	96 contacts →
	Exact match “Promise to deliver Servicing Certainty worldwide.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
15	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
16	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
17	Redex IT Limited	Exact match	London, United KingdomHQ recorded Sep 27, 2026	51-200	89 contacts →
	Exact match “Ultimate IT solutions.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
18	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
19	Intuition IT Intuitive Technology Recruitment	Exact match	London, United KingdomHQ recorded Sep 27, 2026	11-50	84 contacts →
	Exact match “IT'S NOT RECRUITMENT.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
20	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
21	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
22	Axtrum Technologies	Exact match	London, United KingdomHQ recorded Sep 27, 2026	51-200	68 contacts →
	Exact match “We don’t only deliver a change – We deliver a change that adds value and delivers business benefit that is real, tangible and measurable!” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
23	Anya Consultancy Services	Exact match	London, United KingdomHQ recorded Sep 27, 2026	51-200	63 contacts →
	Exact match “ACS is a fast-emerging IT service provider focuses on providing quality, innovative, cost effective IT support services.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
24	Field Techs Services LTD	Exact match	London, United KingdomHQ recorded Sep 27, 2026	51-200	63 contacts →
	Exact match “Field Techs Services LTD is a best one IT support providing company in EMEA, APAC and LATUM.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
25	Northdoor PLC	Exact match	London, United KingdomHQ recorded Sep 27, 2026	51-200	60 contacts →
	Exact match “Northdoor is an award-winning London-based IT consultancy and managed services provider with over 30 years’ experience.” 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 and 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 1,405 IT consulting and support companies based in London, United Kingdom

See the full list, filter by size, metro and specialty, and access 10,787 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

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

As of Sep 27, 2026

42.6%Verified-email coverage

18.0Average contacts per company

1-10Median size (employees)

Sep 27, 2026Page data refreshed

Companies by employee count

1-10

819

11-50

393

51-200

141

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 1,405 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 and 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 10,787 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 and 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 and support companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

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

RevenueBase identified 1,405 company matches for IT consulting and 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 and support companies?

London leads the United Kingdom with 1,405 company records, followed by Manchester (96) and Birmingham (86).

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 10,787 professional contacts with verified work emails tracked across these 1,405 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.

Ready to reach these companies? Verified emails and direct dials for all 1,405 IT consulting and support companies based in London, United Kingdom. Start with a free account, no credit card.

Download this list →

Related lists

IT consulting and support companies by geography

Browse the directory

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.