Most-Used Caching by UK Companies (2026)
Detected caching use across 28,537 UK companies covers 12 systems, with LiteSpeed Cache holding the largest share at 43.0% (12,274 companies).
A detectable Caching system appears at 28,537 of 2,066,481 trading UK companies, across 12 systems. LiteSpeed Cache takes the largest share at 43.0% (12,274 companies), with WP Rocket on 26.6% (7,581) and W3 Total Cache on 9.0% (2,559).
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The middle of the market is split across WP Super Cache at 6.5% (1,847), WP-Optimize at 4.8% (1,382) and WP Fastest Cache at 4.6% (1,325). Redis Object Cache is smaller at 3.8% (1,084), while NitroPack reaches 2.0% (584).
By employer band, LiteSpeed Cache has the largest detected share in each segment: 43.2% of 18,748 companies under 10 employees, 43.2% of 8,582 companies with 10–50 employees and 38.9% of 1,207 companies over 50 employees. The tail is not empty: 4 further systems account for 849 companies.
28,537
Companies with detected Caching
Of 2,066,481 UK companies
1.4%
Detection rate
2026
12
Systems detected
In this category
43%
Leader share
LiteSpeed Cache
UK companies Caching market share
Share of the 28,537 UK companies with a detectable system. As of June 2026.
Caching compared
| System | UK companies | Share | Median headcount | London share | Typical profile |
|---|---|---|---|---|---|
| LiteSpeed Cache | 12,274 | 43% | 6 | 17.3% | 6-employee median, 43.0% share |
| WP Rocket | 7,596 | 26.6% | 6 | 20.4% | 6-employee median, 26.6% share |
| W3 Total Cache | 2,550 | 8.9% | 6 | 20.1% | 6-employee median, 9.0% share |
| WP Super Cache | 1,844 | 6.5% | 6 | 17.6% | 6-employee median, 6.5% share |
| WP-Optimize | 1,389 | 4.9% | 6 | 17.4% | 6-employee median, 4.8% share |
| WP Fastest Cache | 1,315 | 4.6% | 6 | 17.7% | 6-employee median, 4.6% share |
| Redis Object Cache | 1,084 | 3.8% | 6 | 19.1% | 6-employee median, 3.8% share |
| NitroPack | 582 | 2% | 6 | 27.7% | 6-employee median, 2.0% share |
| WPMU DEV Hummingbird | 541 | 1.9% | 9 | 18.7% | 9-employee median, 1.9% share |
| Blitz | 188 | 0.7% | — | — | View these companies in Firmbase → |
| Super Page Cache | 164 | 0.6% | — | — | View these companies in Firmbase → |
| FlyingPress | 64 | 0.2% | — | — | 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 Caching system shifts with company size: among UK companies with under 10 employees, LiteSpeed Cache leads at 43.2% of the 18,748 with a detectable system; among UK companies with 10–50 employees, LiteSpeed Cache leads at 43.2% of the 8,582 with a detectable system; and among UK companies with over 50 employees, LiteSpeed Cache leads at 38.9% of the 1,207 with a detectable system.
Under 10 employees
43.2% of band
Under 10 employees contains 18,748 companies with a detected Caching system. LiteSpeed Cache has the largest share at 43.2%, leaving the remaining usage spread across the other 11 systems.
10–50 employees
43.2% of band
10–50 employees contains 8,582 companies with a detected Caching system. LiteSpeed Cache again has 43.2%, so the segment looks similar to the smallest employers rather than tilting towards a different system.
Over 50 employees
38.9% of band
Over 50 employees is smaller, with 1,207 companies carrying a detected Caching system. LiteSpeed Cache still has the largest share, but at 38.9% rather than 43.2%, pointing to a less concentrated large-employer segment.
How Caching 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.
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UK companies by Caching
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Frequently asked questions
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