Companies using Microsoft 365 in United Kingdom
As of 30 October 2026, 530,361 British companies show Microsoft 365: 530,251 on their website or in DNS records and 956 in their own job postings, led by London.
As of 30 October 2026 · refreshed daily · counts move as websites, DNS and career sites are re-read.
- Top city
- London · 31,295
- In both sources
- 846
- Most common size
- 51-200 employees
- Team that names it most
- IT operations & business systems · 453 postings
- Top industry, posting companies
- Business & finance services
British companies on Microsoft 365
Companies with 51+ employees and high-confidence evidence in their own postings; job boards and portals left out.
Open the sales or marketing leader at each one with a verified e-mail, or get new British Microsoft 365 users every Monday.
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By city, company size, industry and team
Footprint tables first (website or DNS), then the companies whose postings name Microsoft 365.
| companies | share | |
|---|---|---|
| London | 31,295 | 6% |
| Birmingham | 3,718 | 1% |
| Glasgow | 3,541 | 1% |
| Bristol | 3,408 | 1% |
| Manchester | 3,129 | 1% |
| Leeds | 2,637 | 0% |
| Newington | 2,361 | 0% |
| Edinburgh | 2,346 | 0% |
| Sheffield | 2,212 | 0% |
| Liverpool | 2,015 | 0% |
| companies | share | |
|---|---|---|
| Self-employed | 156,477 | 30% |
| 2-10 employees | 224,293 | 42% |
| 11-50 employees | 103,328 | 19% |
| 51-200 employees | 31,399 | 6% |
| 201-500 employees | 8,172 | 2% |
| 501-1000 employees | 3,125 | 1% |
| 1001-5000 employees | 2,585 | 0% |
| 5001-10000 employees | 454 | 0% |
| 10,001+ employees | 418 | 0% |
| companies | share | |
|---|---|---|
| London | 156 | 16% |
| Newington | 13 | 1% |
| Birmingham | 10 | 1% |
| Edinburgh | 8 | 1% |
| Glasgow | 8 | 1% |
| Aldgate East | 7 | 1% |
| Canary Wharf | 6 | 1% |
| Leeds | 6 | 1% |
| Bristol | 5 | 1% |
| Liverpool | 5 | 1% |
| Manchester | 5 | 1% |
| Sheffield | 5 | 1% |
| companies | share | |
|---|---|---|
| Self-employed | 1 | 0% |
| 2-10 employees | 56 | 6% |
| 11-50 employees | 136 | 14% |
| 51-200 employees | 200 | 21% |
| 201-500 employees | 133 | 14% |
| 501-1000 employees | 110 | 12% |
| 1001-5000 employees | 179 | 19% |
| 5001-10000 employees | 60 | 6% |
| 10,001+ employees | 81 | 8% |
| companies | share | |
|---|---|---|
| Business & finance services | 252 | 26% |
| Technology & software | 195 | 20% |
| Manufacturing & industry | 118 | 12% |
| Public, community & associations | 86 | 9% |
| Consumer services & leisure | 72 | 8% |
| Property & construction | 63 | 7% |
| Utilities & infrastructure | 46 | 5% |
| Commerce & trade | 33 | 3% |
| Media & content | 26 | 3% |
| Transport, logistics & rental | 20 | 2% |
| Automotive | 17 | 2% |
| Hospitality & travel | 14 | 1% |
| postings · companies | |
|---|---|
| IT operations & business systems | 453 · 280 |
| Sales | 103 · 71 |
| Product, program & project management | 91 · 61 |
| Administration & office | 71 · 53 |
| Legal, compliance & risk | 40 · 24 |
| Engineering (non-software) | 35 · 29 |
| Marketing & communications | 35 · 29 |
| Human resources | 32 · 22 |
| Customer service & success | 31 · 26 |
| Software engineering | 29 · 24 |
| General management & consulting | 28 · 24 |
| Data & AI | 22 · 19 |
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530,361 British companies show Microsoft 365: 530,251 carry it on their website or in their DNS records, 956 name it in their own job postings, 846 do both. (Breaknorm, 30 October 2026, https://breaknorm.co/tools/microsoft-365/united-kingdom)
Read from the source, not self-reported
Every number on this page can be traced to a page we crawled or a posting we read. Full methodology →
- Job postingsRead hourly from the applicant tracking systems behind British career sites. A tool counts when the employer's own text names it as the team's system.
- CountryFrom the company's own website: imprint, address, phone prefix and language, with a confidence score. Not the posting's location.
- Website and DNSScripts and embeds on the company's pages, plus SPF, DKIM, MX and CNAME records of its domain that point at the vendor.
- ExclusionsJob boards, portals and aggregators are kept out of company lists.
Microsoft 365 in United Kingdom: questions
Is this every British company on Microsoft 365?
It is every British company whose website, DNS records or own job postings show it: 530,361 in total. Companies that use Microsoft 365 without any public trace are not counted.
What does "United Kingdom" mean here?
The country of the company, from its own website (imprint, address, phone prefix, language), not where the posting is located. A German company hiring in Paris still counts as German.
How do I get the British list with e-mails?
Sign up, filter companies on Microsoft 365 and United Kingdom, and open the people you want. Counting is free; the first 1,000 results are too.
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Every British company on Microsoft 365,
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