CDN Used by UK IT Services Companies: Market Share (2026)
Detected CDN market share across 2,208 of 120,560 trading UK IT services companies, with Cloudflare accounting for 91.1% of detected usage.
Among 120,560 trading UK IT services companies, 2,208 have a detectable CDN. Cloudflare has by far the largest footprint, with 91.1% of detected companies (2,012 companies), followed by Amazon S3 on 7.2% (159 companies) and Amazon CloudFront on 6.7% (148 companies).
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The same pattern holds by headcount. Cloudflare leads Under 10 employees with 92.0% of 1,410 companies, 10–50 employees with 90.2% of 713 companies, and Over 50 employees with 84.7% of 85 companies.
The long tail is thin across 11 detected systems. Akamai accounts for 1.5% (33 companies), Fastly for 1.1% (25 companies), ShortPixel for 1.0% (21 companies), Section.io for 0.8% (17 companies) and Bunny for 0.3% (6 companies), while 3 further systems cover 1 company between them.
2,211
IT services with detected CDN
Of 121,118 UK IT services
1.8%
Detection rate
2026
11
Systems detected
In this category
91.1%
Leader share
Cloudflare
UK IT Services CDN market share
Share of the 2,211 UK IT Services with a detectable system. As of June 2026.
CDN compared
| System | UK IT Services | Share | Median headcount | London share | Typical profile |
|---|---|---|---|---|---|
| Cloudflare | 2,014 | 91.1% | 6 | 26.5% | 6-headcount IT services, majority usage |
| Amazon S3 | 160 | 7.2% | 7 | 25.6% | 7-headcount IT services, minority usage |
| Amazon CloudFront | 148 | 6.7% | 7 | 37.8% | 7-headcount IT services, London-skewed usage |
| Akamai | 33 | 1.5% | — | — | View these companies in Firmbase → |
| Fastly | 25 | 1.1% | — | — | View these companies in Firmbase → |
| ShortPixel | 21 | 0.9% | — | — | View these companies in Firmbase → |
| Section.io | 17 | 0.8% | — | — | View these companies in Firmbase → |
| Bunny | 6 | 0.3% | — | — | View these companies in Firmbase → |
| Filestack | 1 | 0% | — | — | View these companies in Firmbase → |
| ImageEngine | 1 | 0% | — | — | View these companies in Firmbase → |
| Uploadcare | 1 | 0% | — | — | View these companies in Firmbase → |
Systems detected below the page threshold appear with counts only; their full lists are available in the Firmbase app.
Market leader by size
The leading CDN system shifts with company size: among UK IT Services with under 10 employees, Cloudflare leads at 91.9% of the 1,412 with a detectable system; among UK IT Services with 10–50 employees, Cloudflare leads at 90.3% of the 714 with a detectable system; and among UK IT Services with over 50 employees, Cloudflare leads at 84.7% of the 85 with a detectable system.
Under 10 employees
91.9% of band
Firms with Under 10 employees form the largest detected band, with 1,410 companies. Cloudflare leads on 92.0%, leaving a small residual share for Amazon S3, Amazon CloudFront and the rest of the market.
10–50 employees
90.3% of band
The 10–50 employees band contains 713 detected companies. Cloudflare leads with 90.2%, so competition is mainly for the remaining 9.8% of detectable usage.
Over 50 employees
84.7% of band
Only 85 detected companies sit in the Over 50 employees band. Cloudflare still leads at 84.7%, although the residual share is larger than in the smaller bands.
How CDN usage is detected
Company data
Detected companies are joined to UK Companies House records and XBRL accounts data. Revenue and headcount figures come from the most recent filed accounts; where the company has not filed, values are estimated using a model trained on filed history and peer benchmarks and are labelled as estimates.
Detection
Firmbase crawls the public website of actively-trading UK companies and fingerprints the technologies present: tracking scripts, embedded forms, chat widgets, CMS markers and similar signatures. A company is included in this list when one or more of the technology's signatures are found on its site; closely-related variants of the same product are grouped under one name. Detection covers what is visible on the public web — a company using the technology purely internally, with no website footprint, will not appear. Counts are therefore a conservative floor, not a ceiling.
Freshness
Websites are re-crawled on a rolling basis and the underlying company data is refreshed from Companies House continuously; filings appear within days of submission. The list and its statistics are regenerated when the detected cohort moves meaningfully. You can see the last-updated timestamp near the top of the page.
All product names are trademarks of their respective owners. Firmbase is not affiliated with, sponsored by, or endorsed by any trademark owner.
UK IT Services by CDN
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Frequently asked questions
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