CDN Used by UK SaaS Companies: Market Share (2026)
Detected CDN use across 3,273 UK SaaS companies, with Cloudflare holding the largest detected share at 89.1%.
Detected CDN usage covers 3,273 of 39,965 trading UK SaaS companies, with 11 systems identified. Cloudflare is the largest system by some distance, appearing at 89.1% (2,917) of detected companies, while Amazon CloudFront appears at 20.3% (666).
Read more
Cloudflare holds the largest share in every employee band: 88.3% among Under 10 employees, 90.9% among 10–50 employees, and 89.0% among Over 50 employees. The pattern is similar across company size, rather than concentrated in one part of the SaaS market.
The long tail is thin. Fastly accounts for 1.9% (63), Section.io for 1.3% (42), Akamai for 0.9% (31), ShortPixel for 0.4% (12), Bunny for 0.2% (8), and Uploadcare for 0.2% (6), with 3 further systems covering 1 company.
3,273
SaaS with detected CDN
Of 39,965 UK SaaS
8.2%
Detection rate
2026
11
Systems detected
In this category
89.1%
Leader share
Cloudflare
UK SaaS CDN market share
Share of the 3,273 UK SaaS with a detectable system. As of June 2026.
CDN compared
| System | UK SaaS | Share | Median headcount | London share | Typical profile |
|---|---|---|---|---|---|
| Cloudflare | 2,917 | 89.1% | 6 | 40.3% | Six-person SaaS teams, broad usage |
| Amazon CloudFront | 666 | 20.3% | 6 | 50.6% | Six-person SaaS teams, London-skewed |
| Fastly | 63 | 1.9% | 6 | 41.3% | Six-person SaaS teams, niche usage |
| Section.io | 42 | 1.3% | — | — | View these companies in Firmbase → |
| Akamai | 31 | 0.9% | — | — | View these companies in Firmbase → |
| ShortPixel | 12 | 0.4% | — | — | View these companies in Firmbase → |
| Bunny | 8 | 0.2% | — | — | View these companies in Firmbase → |
| Uploadcare | 6 | 0.2% | — | — | View these companies in Firmbase → |
| Filestack | 4 | 0.1% | — | — | View these companies in Firmbase → |
| ImageEngine | 2 | 0.1% | — | — | View these companies in Firmbase → |
| Sirv | 2 | 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
The leading CDN system shifts with company size: among UK SaaS with under 10 employees, Cloudflare leads at 88.3% of the 2,180 with a detectable system; among UK SaaS with 10–50 employees, Cloudflare leads at 90.9% of the 984 with a detectable system; and among UK SaaS with over 50 employees, Cloudflare leads at 89% of the 109 with a detectable system.
Under 10 employees
88.3% of band
Smaller SaaS companies make up the largest detected band, with 2,180 companies. Cloudflare leads at 88.3%, leaving other CDN systems competing for a relatively small remainder.
10–50 employees
90.9% of band
Mid-sized SaaS companies account for 984 detected companies. Cloudflare has the highest share in this band at 90.9%, slightly above its overall market share.
Over 50 employees
89% of band
Larger SaaS companies form a much smaller detected band, with 109 companies. Cloudflare still leads at 89.0%, so the size shift does not materially change the ranking.
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 SaaS by CDN
Related directories
Frequently asked questions
What is the most-used CDN among UK SaaS companies?
How many UK SaaS companies have a detectable CDN?
What is a CDN?
How is CDN usage detected?
Which has more UK SaaS companies, Cloudflare or Amazon CloudFront?
What is the best CDN for UK SaaS companies?
Search 3,273 UK companies by the CDN technology they run.
Find the right decision-makers, see verified company data, and export your list in seconds.