Shipvane · 4 AE roles
Marco E. · joined Cargolio
Fleetora · first roles in DECompanies using Mimecast in United Kingdom_
As of 4 November 2026, 15,010 British companies show Mimecast: 15,003 on their website or in DNS records and 21 in their own job postings, led by London.
As of 4 November 2026 · refreshed daily · counts move as websites, DNS and career sites are re-read.
- Top city
- London · 2,332
- In both sources
- 14
- Most common size
- 1001-5000 employees
- Team that names it most
- IT operations & business systems · 17 postings
- Top industry, posting companies
- Business & finance services
British companies on Mimecast
Every company in the country whose own postings name the tool; job boards and portals left out.
Open the sales or marketing leader at each one with a verified e-mail, or get new British Mimecast users every Monday.
Free plan: 1,000 records, no card. The first 20 are above; e-mails are verified at the mail server when you open them.
By city, company size, industry and team
Footprint tables first (website or DNS), then the companies whose postings name Mimecast.
| companies | share | |
|---|---|---|
| London | 2,332 | 16% |
| Newington | 204 | 1% |
| Birmingham | 202 | 1% |
| Manchester | 195 | 1% |
| Bristol | 135 | 1% |
| Glasgow | 135 | 1% |
| Leeds | 118 | 1% |
| Edinburgh | 102 | 1% |
| Belfast | 92 | 1% |
| Sheffield | 72 | 0% |
| companies | share | |
|---|---|---|
| Self-employed | 496 | 3% |
| 2-10 employees | 2,817 | 19% |
| 11-50 employees | 5,040 | 34% |
| 51-200 employees | 3,835 | 26% |
| 201-500 employees | 1,446 | 10% |
| 501-1000 employees | 689 | 5% |
| 1001-5000 employees | 515 | 3% |
| 5001-10000 employees | 96 | 1% |
| 10,001+ employees | 69 | 0% |
| companies | share | |
|---|---|---|
| London | 7 | 33% |
| New York | 2 | 10% |
| Amsterdam | 1 | 5% |
| Blackburn | 1 | 5% |
| High Brooms | 1 | 5% |
| Leeds | 1 | 5% |
| Ringwood | 1 | 5% |
| Salford | 1 | 5% |
| Washington | 1 | 5% |
| West Hanningfield | 1 | 5% |
| Wimbledon | 1 | 5% |
| York | 1 | 5% |
| companies | share | |
|---|---|---|
| 11-50 employees | 3 | 14% |
| 201-500 employees | 6 | 29% |
| 501-1000 employees | 3 | 14% |
| 1001-5000 employees | 7 | 33% |
| 5001-10000 employees | 1 | 5% |
| 10,001+ employees | 1 | 5% |
| companies | share | |
|---|---|---|
| Business & finance services | 10 | 48% |
| Technology & software | 7 | 33% |
| Commerce & trade | 2 | 10% |
| Consumer services & leisure | 1 | 5% |
| Manufacturing & industry | 1 | 5% |
| postings · companies | |
|---|---|
| IT operations & business systems | 17 · 13 |
| Customer service & success | 2 · 1 |
| Administration & office | 1 · 1 |
| Engineering (non-software) | 1 · 1 |
| Sales | 1 · 1 |
Mimecast everywhere, and other tools here
All companies using Mimecast →
Companies hiring sales in United Kingdom →
email security awareness compared →
Quote the sentence with the date and the link. The numbers change daily; the link always shows the current ones.
15,010 British companies show Mimecast: 15,003 carry it on their website or in their DNS records, 21 name it in their own job postings, 14 do both. (Breaknorm, 4 November 2026, https://breaknorm.co/tools/mimecast/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.
Mimecast in United Kingdom: questions
Is this every British company on Mimecast?
It is every British company whose website, DNS records or own job postings show it: 15,010 in total. Companies that use Mimecast 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 Mimecast and United Kingdom, and open the people you want. Counting is free; the first 1,000 records are too.
Get this list your way
The same data as a search, over MCP and the API, as bulk files, or pushed to you as it changes.
Every British company on Mimecast,
with the person who owns it
Filter on Mimecast and United Kingdom, and get 1,000 records free.