Company lists · Data refreshed September 2026
Top 25 Office 365 managed service providers based in the United Kingdom
RevenueBase identified 245 office 365 managed service providers headquartered in the United Kingdom as of September 2026 and tracks 2,527 professional contacts across them, including 1,318 with verified work emails. London is the largest hub.
This list covers office 365 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 29, 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.
The 25 largest office 365 managed service providers based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 175 contacts → | ||||
Partial evidence “Infinity Group is a leading Microsoft Partner in the UK, offering technology services, solutions, and managed services.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 2 | 141 contacts → | ||||
Strong evidence “Managing Microsoft 365 tenants no longer needs to be time-consuming and complex.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 3 | 131 contacts → | ||||
Partial evidence “Core is a managed services company for people and businesses who want to realise modern workplace technology solutions to drive their business forward.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 4 | 127 contacts → | ||||
Indirect evidence “We're Scotland's leading independent IT services business.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 5 | 88 contacts → | ||||
Partial evidence “Cobweb Solutions is a leading managed service provider helping SMEs across the UK and Middle East improve productivity, strengthen cyber security, and unlock the value of AI and…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 6 | 86 contacts → | ||||
Partial evidence “As a leading UK Managed Service Provider, we’re passionate about making technology work for you and integrating multiple products to create meaningful solutions.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 7 | 72 contacts → | ||||
Indirect evidence “Where modern work falls into place.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 8 | 62 contacts → | ||||
Partial evidence “Applicable helps organisations unlock the full potential of Microsoft 365 with expert consultancy, 24×7 support, and automation-driven administration and configuration.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 9 | 53 contacts → | ||||
Partial evidence “Outcome-focused Managed Services Provider, expert in Microsoft Cloud, Hybrid Cloud, Modern Workplace, Unified Communications, Power Platform, Networking, and Security, boasting…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 10 | 52 contacts → | ||||
Indirect evidence “We’ve spent the last decade helping Scottish businesses take control of their IT.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 11 | 50 contacts → | ||||
Indirect evidence “Virtuoso provides award-winning strategic technology support to businesses across the United Kingdom, New Zealand & Australia.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 12 | 44 contacts → | ||||
Indirect evidence “Established for 26 years, we're an Exeter-based, award-winning business IT provider.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 13 | 41 contacts → | ||||
Partial evidence “Silversands is an IT Consultancy specialising in Microsoft 365 and Cloud & Hybrid Infrastructure.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 14 | 38 contacts → | ||||
Indirect evidence “A multiple Microsoft Solutions Partner with ISO9001, IS027001 and Cyber Essentials Plus accreditation, Bridgeall can help your organisation build a Modern Intelligent Workplace…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 15 | 34 contacts → | ||||
Partial evidence “We help organisations achieve business goals quicker through best-in-class Microsoft 365 services that put employees front and center.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 16 | 33 contacts → | ||||
Indirect evidence “Nimbus helps growing organisations move from reactive IT to a secure, supported and strategic technology foundation.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 17 | 30 contacts → | ||||
Indirect evidence “Tech is more demanding than ever, but traditional MSPs are stuck in the past.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 18 | 30 contacts → | ||||
Indirect evidence “MTS Technology (formally MT Services) have built a strong reputation and forged lasting business relationships on the principles of straightforward advice, trust and ethical…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 19 | 29 contacts → | ||||
Partial evidence “Dynamic Networks Group is a national award-winning Managed Service Provider with its headquarters in Leeds.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 20 | 29 contacts → | ||||
Partial evidence “Since we’ve been connecting IT channel partners to solutions for multi-layered Cyber-Security, Backup and Disaster Recovery, IT Service Management, Productivity, Professional…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 21 | 26 contacts → | ||||
Indirect evidence “We’re a straight-talking, independently owned IT partner helping businesses stay productive, protected and in control.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 22 | 24 contacts → | ||||
Partial evidence “Technology is only as powerful as the people who manage it.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 23 | 24 contacts → | ||||
Indirect evidence “Established in 2004, and still under the same leadership, we are a privately held and accountable MSP, based in Hereford, in the West Midlands.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 24 | 24 contacts → | ||||
Indirect evidence “Silverbug are IT experts who do things a little differently.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 25 | 22 contacts → | ||||
Partial evidence “At Grant McGregor, we’re a Managed Service Provider (MSP) with 25 years of experience helping organisations build secure, smart and people-focused workplaces.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
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: office 365 managed service providers. 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 office 365 managed service providers.
- Partial evidence
- Its own public description names part of office 365 managed service providers, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name office 365 managed service providers. 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 245 office 365 managed service providers based in the United Kingdom
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Office 365 managed service providers based in the United Kingdom at a glance
As of Sep 29, 2026Companies by employee count
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 245 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 office 365 managed service providers, 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 “office 365 managed service providers”. 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 office 365 managed service providers), 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 office 365 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 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, 1,318 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 29, 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.
Office 365 managed service providers 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 office 365 managed service providers, 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 office 365 managed service providers are there based in the United Kingdom?
RevenueBase identified 245 office 365 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?
Infinity Group UK, headquartered in Tunbridge Wells, tops this list with the largest team on record.
Which city has the most office 365 managed service providers?
London leads with 49 headquartered companies, followed by Glasgow (7) and Manchester (6).
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 1,318 verified decision-maker contacts tracked across these 245 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 29, 2026.
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Office 365 managed service providers by geography
- Office 365 managed service providers based in London, United Kingdom
- Office 365 managed service providers based in Australia
- Office 365 managed service providers based in Belgium
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- Office 365 managed service providers based in Canada
- Office 365 managed service providers based in Denmark
- Office 365 managed service providers based in France
- Office 365 managed service providers based in Germany
- Office 365 managed service providers based in India
- Office 365 managed service providers based in the Netherlands
- Office 365 managed service providers based in South Africa
- Office 365 managed service providers based in the United States
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.
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