Companies using Slack in United Kingdom
As of 4 November 2026, 1,575 British companies show Slack: 1,287 on their website or in DNS records and 325 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 · 309
- In both sources
- 37
- Most common size
- 51-200 employees
- Team that names it most
- Sales · 84 postings
- Top industry, posting companies
- Technology & software
British companies on Slack
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 Slack users every Monday.
Start free, 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 Slack.
| companies | share | |
|---|---|---|
| London | 309 | 24% |
| Manchester | 38 | 3% |
| Newington | 21 | 2% |
| Aldgate East | 19 | 1% |
| Edinburgh | 17 | 1% |
| Hoxton | 14 | 1% |
| Leeds | 13 | 1% |
| Canary Wharf | 12 | 1% |
| Birmingham | 10 | 1% |
| New York | 8 | 1% |
| companies | share | |
|---|---|---|
| Self-employed | 121 | 9% |
| 2-10 employees | 229 | 18% |
| 11-50 employees | 428 | 33% |
| 51-200 employees | 315 | 24% |
| 201-500 employees | 110 | 9% |
| 501-1000 employees | 42 | 3% |
| 1001-5000 employees | 32 | 2% |
| 5001-10000 employees | 3 | 0% |
| 10,001+ employees | 7 | 1% |
| companies | share | |
|---|---|---|
| London | 78 | 24% |
| Newington | 10 | 3% |
| New York | 6 | 2% |
| Chicago | 4 | 1% |
| Hoxton | 4 | 1% |
| Somers Town | 3 | 1% |
| Berlin | 2 | 1% |
| Birmingham | 2 | 1% |
| Brighton | 2 | 1% |
| Chester | 2 | 1% |
| Hyde Park | 2 | 1% |
| Little Bollington | 2 | 1% |
| companies | share | |
|---|---|---|
| Self-employed | 16 | 5% |
| 2-10 employees | 46 | 14% |
| 11-50 employees | 66 | 20% |
| 51-200 employees | 78 | 24% |
| 201-500 employees | 40 | 12% |
| 501-1000 employees | 28 | 9% |
| 1001-5000 employees | 35 | 11% |
| 5001-10000 employees | 7 | 2% |
| 10,001+ employees | 9 | 3% |
| companies | share | |
|---|---|---|
| Technology & software | 133 | 41% |
| Business & finance services | 89 | 27% |
| Media & content | 23 | 7% |
| Public, community & associations | 20 | 6% |
| Consumer services & leisure | 16 | 5% |
| Commerce & trade | 14 | 4% |
| Manufacturing & industry | 9 | 3% |
| Property & construction | 6 | 2% |
| Health care | 5 | 2% |
| Utilities & infrastructure | 4 | 1% |
| Hospitality & travel | 3 | 1% |
| Transport, logistics & rental | 3 | 1% |
| postings · companies | |
|---|---|
| Sales | 84 · 45 |
| IT operations & business systems | 48 · 41 |
| Software engineering | 40 · 30 |
| Marketing & communications | 38 · 24 |
| Product, program & project management | 38 · 20 |
| Customer service & success | 32 · 25 |
| Data & AI | 23 · 19 |
| Administration & office | 15 · 15 |
| Business development & strategy | 15 · 10 |
| Finance & accounting | 12 · 9 |
| Human resources | 12 · 12 |
| General management & consulting | 10 · 8 |
Slack everywhere, and other tools here
All companies using Slack →
Companies hiring sales in United Kingdom →
Team chat compared →
Quote the sentence with the date and the link. The numbers change daily; the link always shows the current ones.
1,575 British companies show Slack: 1,287 carry it on their website or in their DNS records, 325 name it in their own job postings, 37 do both. (Breaknorm, 4 November 2026, https://breaknorm.co/tools/slack/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.
Slack in United Kingdom: questions
Is this every British company on Slack?
It is every British company whose website, DNS records or own job postings show it: 1,575 in total. Companies that use Slack 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 Slack and United Kingdom, and open the people you want. Counting is free; the first 1,000 results 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 Slack,
with the person who owns it
Filter on Slack and United Kingdom. Start free, no card.