CDN Used by UK construction: Market Share (2026)
Across 237,400 trading UK construction companies, 6,161 have a detectable CDN; Cloudflare accounts for 93.9% of detections.
Among 237,400 trading UK construction companies, 6,161 have a detectable CDN. The detected market is highly concentrated: Cloudflare accounts for 93.9% of detected use, covering 5,787 companies.
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Amazon S3 is the next largest system at 3.5% (214 companies), followed by Amazon CloudFront at 2.1% (127), Bunny at 1.4% (87), ShortPixel at 1.0% (64), Fastly at 0.6% (34), Akamai at 0.3% (20), and Section.io at 0.2% (12). A further 2 systems cover 2 companies between them.
The split by employee band changes little. Cloudflare accounts for 93.9% of detected CDNs among companies under 10 employees, 93.9% in the 10–50 employees band, and 95.3% among companies with over 50 employees.
6,161
construction with detected CDN
Of 237,400 UK construction
2.6%
Detection rate
2026
10
Systems detected
In this category
93.9%
Leader share
Cloudflare
UK construction CDN market share
Share of the 6,161 UK construction with a detectable system. As of June 2026.
CDN compared
| System | UK construction | Share | Median headcount | London share | Typical profile |
|---|---|---|---|---|---|
| Cloudflare | 5,787 | 93.9% | 5 | 15.1% | Five-person firms, 93.9% share |
| Amazon S3 | 214 | 3.5% | 5 | 19.2% | Five-person firms, 3.5% share |
| Amazon CloudFront | 127 | 2.1% | 4 | 23.6% | Four-person firms, 23.6% London share |
| Bunny | 87 | 1.4% | 7 | 2.3% | Seven-person firms, 2.3% London share |
| ShortPixel | 64 | 1% | 7 | 10.9% | Seven-person firms, 10.9% London share |
| Fastly | 34 | 0.6% | — | — | View these companies in Firmbase → |
| Akamai | 20 | 0.3% | — | — | View these companies in Firmbase → |
| Section.io | 12 | 0.2% | — | — | View these companies in Firmbase → |
| Filestack | 4 | 0.1% | — | — | View these companies in Firmbase → |
| Uploadcare | 4 | 0.1% | — | — | 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
Under 10 employees
93.9% of band
The under-10 band contains 4,434 construction companies with a detectable CDN, making it the largest segment here. Cloudflare accounts for 93.9%, with the rest spread across a small tail of other systems.
10–50 employees
93.9% of band
The 10–50 employees band has 1,556 construction companies with a detectable CDN. Cloudflare again accounts for 93.9%, leaving limited share for Amazon S3, Amazon CloudFront and the remaining systems.
Over 50 employees
95.3% of band
The over-50 band is smaller, at 171 construction companies with a detectable CDN, and slightly more concentrated. Cloudflare accounts for 95.3%, while other systems appear mainly as a tail.
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 construction by CDN
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Frequently asked questions
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