Company lists · Data refreshed September 2026

Top 25 Managed service providers based in the United Kingdom

Name: Managed service providers based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 5, 2026 2,568 companies tracked

RevenueBase identified 2,568 managed service providers headquartered in the United Kingdom as of September 2026 and tracks 31,727 professional contacts across them, including 13,039 with verified work emails and 1,919 with mobile numbers. London is the largest hub.

This list covers managed service providers 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, how directly it supports the match, and when it was last checked. Data refreshed September 5, 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 HQ checked on every row Match evidence on every row Refreshed Sep 5, 2026 86% judged on-target in blind review

2,568Companies

31,727Contacts tracked

13,039Verified emails

1,919Mobile numbers

Unlock all 2,568 companies Free signup · no credit card · 500 free credits

The 25 largest managed service providers based in the United Kingdom

Ranked by team size

Top 25 of 2,568 managed service providers based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 5, 2026. Evidence rates how directly each company's own description names managed service providers: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#	Company	Headquarters	Employees	Contacts
1	LogicalisIndirect evidence	Maidenhead, United KingdomHQ checked Sep 5, 2026	5,001-10,000	1,372
	“We are Architects of Change™.” Source: company website · checked Sep 5, 2026
2	NSC GlobalIndirect evidence	London, United KingdomHQ checked Sep 5, 2026	1,001-5,000	1,039
	“Global business doesn’t have to be complicated.” Source: company website · checked Sep 5, 2026
3	NasstarIndirect evidence	Wakefield, United KingdomHQ checked Sep 5, 2026	1,001-5,000	844
	“Complexity isn’t the enemy.” Source: company website · checked Sep 5, 2026
4	MTIIndirect evidence	Staines-upon-thames, United KingdomHQ checked Sep 5, 2026	201-500	764
	“MTI provides award-winning, end-to-end technology solutions and services in cyber security and data centre for over 35 years.” Source: company website · checked Sep 5, 2026
5	TSGIndirect evidence	Gateshead, United KingdomHQ checked Sep 5, 2026	201-500	748
	“TSG: The Technology Partner for Ambitious Businesses We're not a reseller.” Source: company website · checked Sep 5, 2026
6	Excis ComplianceIndirect evidence	London, United KingdomHQ checked Sep 5, 2026	1,001-5,000	616
	“Excis is a trusted global IT services company, delivering agile, multilingual support across 150+ countries.” Source: company website · checked Sep 5, 2026
7	XMAIndirect evidence	Reading, United KingdomHQ checked Sep 5, 2026	501-1,000	538
	“Unlock your potential with XMA.” Source: company website · checked Sep 5, 2026
8	ESP Global ServicesIndirect evidence	Reading, United KingdomHQ checked Sep 5, 2026	501-1,000	510
	“ESP provides IT support services across the globe.” Source: company website · checked Sep 5, 2026
9	LittlefishStrong evidence	Nottingham, United KingdomHQ checked Sep 5, 2026	201-500	364
	“Littlefish is a multi-award-winning Managed IT Services Provider that continues to grow consistently and significantly through tangibly delivering on our promises of enhanced user…” Source: company website · checked Sep 5, 2026
10	CHESSIndirect evidence	Alderley Edge, United KingdomHQ checked Sep 5, 2026	201-500	337
	“Chess ICT is the UKs leading independent technology service provider, employing more than 240 people across the UK and supporting over customers.” Source: company website · checked Sep 5, 2026
11	BOXXEStrong evidence	Hemel Hempstead, United KingdomHQ checked Sep 5, 2026	201-500	295
	“boxxe is a leading provider of hardware, software, and managed IT services for public and private sector organisations.” Source: company website · checked Sep 5, 2026
12	IntercityStrong evidence	Birmingham, United KingdomHQ checked Sep 5, 2026	201-500	272
	“At Intercity, we help you Do More with Technology, Cloud & Security, Communications and Managed IT services.” Source: company website · checked Sep 5, 2026
13	Aspire Technology SolutionsIndirect evidence	Gateshead, United KingdomHQ checked Sep 5, 2026	201-500	266
	“Welcome to Aspire Technology Solutions!” Source: company website · checked Sep 5, 2026
14	A&o IT GroupStrong evidence	Bracknell, United KingdomHQ checked Sep 5, 2026	201-500	251
	“A&O IT Group, a global leader in managed IT services, brings over 50 years of expertise and operates in over 130 countries.” Source: company website · checked Sep 5, 2026
15	ROC TechnologiesIndirect evidence	Greenham, United KingdomHQ checked Sep 5, 2026	201-500	243
	“Roc Technologies delivers transformational IT solutions to public and private sector organisations across the UK.” Source: company website · checked Sep 5, 2026
16	Sharp BrainsIndirect evidence	Slough, United KingdomHQ checked Sep 5, 2026	51-200	241
	“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: company website · checked Sep 5, 2026
17	Vista Technology SupportIndirect evidence	Pentwyn, United KingdomHQ checked Sep 5, 2026	201-500	229
	“Vista is the UK market leader in delivering IT technology deployment and support services in retail, hospitality, healthcare and entertainment sectors.” Source: company website · checked Sep 5, 2026
18	WanstorStrong evidence	London, United KingdomHQ checked Sep 5, 2026	201-500	227
	“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…” Source: company website · checked Sep 5, 2026
19	IFBStrong evidence	Aberdeen, United KingdomHQ checked Sep 5, 2026	n/a	214
	“IFB - Managed IT Services Provider committed to maximising and supporting our customers' uptime.” Source: company website · checked Sep 5, 2026
20	ROCKIndirect evidence	Pencoed, United KingdomHQ checked Sep 5, 2026	51-200	211
	“Technology services for the future.” Source: company website · checked Sep 5, 2026
21	CSG Computer Services LTDStrong evidence	Nr Cardiff, United KingdomHQ checked Sep 5, 2026	n/a	208
	“Helping UK businesses reduce IT downtime, strengthen cyber security and adopt AI safely, without the cost and complexity of managing IT in-house.” Source: company website · checked Sep 5, 2026
22	Atech CloudStrong evidence	Marlow, United KingdomHQ checked Sep 5, 2026	51-200	178
	“24 x 7 Cloud Service Provider & Managed Security Service Provider delivering technology transformation.” Source: company website · checked Sep 5, 2026
23	EspriaIndirect evidence	Ware, United KingdomHQ checked Sep 5, 2026	51-200	145
	“Your next generation MSP.” Source: company website · checked Sep 5, 2026
24	UptimeIndirect evidence	Three Bridges, United KingdomHQ checked Sep 5, 2026	51-200	144
	“Uptime is the leading choice for MSPs across the globe looking to extend the services they offer to clients while simultaneously building recurring revenue.” Source: company website · checked Sep 5, 2026
25	Deepscale Technologies LTDStrong evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	141
	“Deepscale Technologies provide data center, enterprise & managed IT solutions across the globe that enhance how businesses operate.” Source: company website · checked Sep 5, 2026

Showing 25 of 2,568 managed service providers based in the United Kingdom

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Managed service providers based in the United Kingdom at a glance

As of Sep 5, 2026

1-10Median size (employees)

LondonLargest hub · 539 HQs

1,919Contacts with mobile numbers

Sep 5, 2026Data refreshed

Companies by employee count

1-10

1,471

11-50

844

51-200

181

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Verified emails by last verification

0–30

12,175

31–60

818

61–90

90–180

180+

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 managed service providers, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, 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 “managed service providers”. Matching reads each company's description, not its industry code or its name.
What we exclude: Companies whose own description does not clearly place them among managed service providers, 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 an evidence 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, 13,039 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 5, 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.

Managed service providers by metro

Frequently asked

How many managed service providers are there based in the United Kingdom?

RevenueBase identified 2,568 managed service providers 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?

Logicalis, headquartered in Maidenhead, tops this list with the largest team on record.

Which city has the most managed service providers?

London leads with 539 headquartered companies, followed by Manchester (49) and Birmingham (36).

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 13,039 verified decision-maker contacts tracked across these 2,568 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 5, 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.