Company lists · Data refreshed September 2026

Top 25 Implementation services based in the United Kingdom

Name: Implementation services based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 1,204 companies tracked

RevenueBase identified 1,204 implementation services headquartered in the United Kingdom as of September 2026 and tracks 18,633 professional contacts across them, including 8,007 with verified work emails. London is the largest hub.

This list covers implementation services 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 21, 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 21, 2026 86% judged on-target in blind review

1,204Companies

18,633Contacts tracked

8,007Verified emails

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The 25 largest implementation services based in the United Kingdom

Ranked by team size

Top 25 of 1,204 implementation services based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to implementation services: 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Icon Strategic Solutions	Indirect evidence	Dublin, United KingdomHQ checked Sep 21, 2026	10001+	6,148 contacts →
	Indirect evidence “ICON Strategic Solutions is the global leading provider of Functional Service Provision (FSP) services.” Source: RevenueBase Database · checked Sep 21, 2026
2	ONNEC	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	501-1,000	585 contacts →
	Indirect evidence “Onnec is a leading partner for IT Infrastructure design, installation and operational support services.” Source: RevenueBase Database · checked Sep 21, 2026
3	XMA	Indirect evidence	Reading, United KingdomHQ checked Sep 21, 2026	501-1,000	538 contacts →
	Indirect evidence “Unlock your potential with XMA.” Source: RevenueBase Database · checked Sep 21, 2026
4	Zenitech	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	501-1,000	408 contacts →
	Indirect evidence “Zenitech creates technology to transform businesses.” Source: RevenueBase Database · checked Sep 21, 2026
5	MARCH	Indirect evidence	Multiple Locations Uk-wide, United KingdomHQ checked Sep 21, 2026	1,001-5,000	273 contacts →
	Indirect evidence “We are March.” Source: RevenueBase Database · checked Sep 21, 2026
6	Intercity	Indirect evidence	Birmingham, United KingdomHQ checked Sep 21, 2026	201-500	272 contacts →
	Indirect evidence “At Intercity, we help you Do More with Technology, Cloud & Security, Communications and Managed IT services.” Source: RevenueBase Database · checked Sep 21, 2026
7	The Adaptavist Group	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	1,001-5,000	254 contacts →
	Indirect evidence “We are experts at delivering innovative software, tailored solutions, and quality services across some of the world's most trusted technology ecosystems, including Atlassian, AWS…” Source: RevenueBase Database · checked Sep 21, 2026
8	Percipere	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	201-500	245 contacts →
	Indirect evidence “Percipere is a niche global consultancy, partnering companies in their evolution towards greater operational efficiency and profitability.” Source: RevenueBase Database · checked Sep 21, 2026
9	Parser	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	201-500	242 contacts →
	Indirect evidence “At Parser we help organisations deliver impact through technology.” Source: RevenueBase Database · checked Sep 21, 2026
10	Sharp Brains	Indirect evidence	Slough, United KingdomHQ checked Sep 21, 2026	51-200	241 contacts →
	Indirect evidence “At Sharp Brains, we are your premier IT Services & Solutions Provider based in the UK, dedicated to meeting your business's unique needs with tailor-made solutions.” Source: RevenueBase Database · checked Sep 21, 2026
11	Vista Technology Support	Indirect evidence	Pentwyn, United KingdomHQ checked Sep 21, 2026	201-500	229 contacts →
	Indirect evidence “Vista is the UK market leader in delivering IT technology deployment and support services in retail, hospitality, healthcare and entertainment sectors.” Source: RevenueBase Database · checked Sep 21, 2026
12	Emvigo Technologies	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	51-200	204 contacts →
	Indirect evidence “Emvigo Technologies – The Power of Getting Things Done We believe that great ideas don’t just happen-they need the right team to bring them to life, fast.” Source: RevenueBase Database · checked Sep 21, 2026
13	Platned	Indirect evidence	Gerrards Cross, United KingdomHQ checked Sep 21, 2026	201-500	190 contacts →
	Indirect evidence “Platned helps organisations simplify complex change and get more value from their enterprise technology investments.” Source: RevenueBase Database · checked Sep 21, 2026
14	Cyberiam	Strong evidence	Chester, United KingdomHQ checked Sep 21, 2026	51-200	133 contacts →
	Strong evidence “CyberIAM provides the expertise needed for the design and implementation of complex Identity and access management systems.” Source: RevenueBase Database · checked Sep 21, 2026
15	TDM Group	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	51-200	115 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 21, 2026
16	Avnet Integrated Emea Solutions	Indirect evidence	Maidenhead, United KingdomHQ checked Sep 21, 2026	51-200	110 contacts →
	Indirect evidence “Avnet Integrated is the consultancy and solutions division of Avnet.” Source: RevenueBase Database · checked Sep 21, 2026
17	Phase 3	Indirect evidence	Manchester, United KingdomHQ checked Sep 21, 2026	51-200	102 contacts →
	Indirect evidence “Welcome to Phase 3 - providing comprehensive solutions in digital transformation across HR, Payroll and Finance.” Source: RevenueBase Database · checked Sep 21, 2026
18	OVYO	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	51-200	91 contacts →
	Indirect evidence “Ovyo provides rapid access to specialist people and teams in software engineering, operations & delivery throughout the streaming/OTT/media, satellite/space and comms industries.” Source: RevenueBase Database · checked Sep 21, 2026
19	ADM Computing	Indirect evidence	Canterbury, United KingdomHQ checked Sep 21, 2026	51-200	72 contacts →
	Indirect evidence “ADM Computing is an independent, family-owned IT services provider headquartered in Canterbury, supporting organisations across Kent, London and the South East since 1984.” Source: RevenueBase Database · checked Sep 21, 2026
20	EXI	Indirect evidence	Coventry, United KingdomHQ checked Sep 21, 2026	51-200	70 contacts →
	Indirect evidence “Understand.” Source: RevenueBase Database · checked Sep 21, 2026
21	C&i Engineering Solutions	Indirect evidence	Aberdeen, United KingdomHQ checked Sep 21, 2026	51-200	65 contacts →
	Indirect evidence “An independent team of highly skilled engineers directly supporting our clients Facilities, Operations and Maintenance engineers in the delivery of Control & Instrumentation…” Source: RevenueBase Database · checked Sep 21, 2026
22	Whizamet	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	51-200	65 contacts →
	Indirect evidence “At Whizamet, we are a team of experienced professionals dedicated to empowering organizations to unlock the full potential of digital transformation.” Source: RevenueBase Database · checked Sep 21, 2026
23	Nimbus	Indirect evidence	Stratford-upon-avon, United KingdomHQ checked Sep 21, 2026	51-200	62 contacts →
	Indirect evidence “We design, develop and deliver business transformation through the power of the cloud Knowing how and where to invest in digital opportunities is vital to the growth of any…” Source: RevenueBase Database · checked Sep 21, 2026
24	Advisority	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	51-200	61 contacts →
	Indirect evidence “We are the trusted IT integrator that specialises in making your work flow.” Source: RevenueBase Database · checked Sep 21, 2026
25	FMK	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	n/a	59 contacts →
	Indirect evidence “A full service consultancy company specialising integrating Macintosh and Windows.” Source: RevenueBase Database · checked Sep 21, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: implementation services. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names implementation services.
Partial evidence: Its own public description names part of implementation services, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name implementation services. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 1,204 implementation services based in the United Kingdom

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Implementation services based in the United Kingdom at a glance

As of Sep 21, 2026

43.0%Verified-email coverage

15.5Average contacts per company

1-10Median size (employees)

32.8%Largest-city concentration · London

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

795

11-50

281

51-200

201-500

501-1,000

1,001-5,000

10001+

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 1,204 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 implementation services, 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 “implementation services”. 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 implementation services), 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 implementation services, 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, 8,007 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 21, 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.

Implementation services by metro

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 implementation services, 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 implementation services are there based in the United Kingdom?

RevenueBase identified 1,204 implementation services 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?

Icon Strategic Solutions, headquartered in Dublin, tops this list with the largest team on record.

Which city has the most implementation services?

London leads with 395 headquartered companies, followed by Manchester (42) and Bristol (25).

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 8,007 verified decision-maker contacts tracked across these 1,204 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 21, 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.