Most-Used WordPress plugins by UK Companies (2026)
Detected WordPress plugin market share across 22,911 UK companies, with Site Kit ahead on 32.7% of detected installs.
Among 2,066,481 trading UK companies, 22,911 have a detectable WordPress plugin. The directory finds 24 systems, with Site Kit the largest at 32.7% (7,501 companies).
Read more
Site Kit sits ahead of Max Mega Menu at 14.2% (3,261), Jetpack at 13.1% (2,995), Essential Addons for Elementor at 10.8% (2,482) and Smush at 9.0% (2,064). Smaller but still visible shares include JetEngine at 4.8% (1,092), EWWW Image Optimizer at 4.5% (1,025) and Autoptimize at 3.3% (757).
The size-band split is consistent: Site Kit is first among Under 10 employees, 10–50 employees and Over 50 employees. A further 16 systems appear across 3,457 companies, so the long tail is sizeable but fragmented.
22,911
Companies with detected WordPress plugins
Of 2,066,481 UK companies
1.1%
Detection rate
2026
24
Systems detected
In this category
32.7%
Leader share
Site Kit
UK companies WordPress plugins market share
Share of the 22,911 UK companies with a detectable system. As of June 2026.
WordPress plugins compared
| System | UK companies | Share | Median headcount | London share | Typical profile |
|---|---|---|---|---|---|
| Site Kit | 7,469 | 32.6% | 6 | 16.8% | 6-employee median, 32.7% share |
| Max Mega Menu | 3,261 | 14.2% | 6 | 18.4% | 6-employee median, 14.2% share |
| Jetpack | 3,002 | 13.1% | 7 | 18.9% | 7-employee median, 13.1% share |
| Essential Addons for Elementor | 2,482 | 10.8% | 7 | 22.6% | 7-employee median, 10.8% share |
| Smush | 2,060 | 9% | 6 | 16.6% | 6-employee median, 9.0% share |
| JetEngine | 1,088 | 4.7% | 7 | 20% | 7-employee median, 4.8% share |
| EWWW Image Optimizer | 1,025 | 4.5% | 6 | 20% | 6-employee median, 4.5% share |
| Autoptimize | 753 | 3.3% | 6 | 18.5% | 6-employee median, 3.3% share |
| iThemes | 686 | 3% | 7 | 24.7% | 7-employee median, 3.0% share |
| GoDaddy CoBlocks | 672 | 2.9% | 6 | 24% | 6-employee median, 3.0% share |
| Breadcrumb NavXT | 585 | 2.6% | 7 | 21.5% | 7-employee median, 2.6% share |
| Perfmatters | 437 | 1.9% | 6 | 21.9% | 6-employee median, 1.9% share |
| GenerateBlocks | 360 | 1.6% | 7 | 13.3% | 7-employee median, 1.5% share |
| Animate It | 339 | 1.5% | 6 | 19.5% | 6-employee median, 1.5% share |
| Elementor Addon Elements | 311 | 1.4% | 7 | 19% | 7-employee median, 1.4% share |
| Essential Blocks | 282 | 1.2% | 7 | 21.6% | 7-employee median, 1.2% share |
| ContentViews | 277 | 1.2% | 6 | 23.5% | 6-employee median, 1.2% share |
| Advanced Custom Fields | 224 | 1% | — | — | View these companies in Firmbase → |
| a3 Lazy Load | 201 | 0.9% | — | — | View these companies in Firmbase → |
| Shortcodes Ultimate | 119 | 0.5% | — | — | View these companies in Firmbase → |
| HT Mega | 113 | 0.5% | — | — | View these companies in Firmbase → |
| WP Portfolio | 93 | 0.4% | — | — | View these companies in Firmbase → |
| Flying Pages | 91 | 0.4% | — | — | View these companies in Firmbase → |
| WooBeWoo | 90 | 0.4% | — | — | 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 WordPress plugins system shifts with company size: among UK companies with under 10 employees, Site Kit leads at 32.7% of the 14,830 with a detectable system; among UK companies with 10–50 employees, Site Kit leads at 32.3% of the 7,114 with a detectable system; and among UK companies with over 50 employees, Site Kit leads at 36% of the 967 with a detectable system.
Under 10 employees
32.7% of band
This is the largest band, with 14,830 companies and Site Kit at 32.7%. Competition comes from the same broad set of navigation, optimisation, content and add-on systems seen across the market.
10–50 employees
32.3% of band
This mid-sized band covers 7,114 companies, with Site Kit again first at 32.3%. Max Mega Menu, Jetpack, Essential Addons for Elementor and Smush form the main named challengers by overall share.
Over 50 employees
36% of band
This smaller band contains 967 companies and shows the highest Site Kit share, at 36.0%. The rest of the market is split across the same 23 other detected systems rather than a single close rival.
How WordPress plugins 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 companies by WordPress plugins
Related directories
Frequently asked questions
What is the most-used WordPress plugins among UK companies?
How many UK companies have a detectable WordPress plugins?
What is a WordPress plugins?
How is WordPress plugins usage detected?
Which has more UK companies, Site Kit or Max Mega Menu?
What is the best WordPress plugins for UK companies?
Search 22,911 UK companies by the WordPress plugins technology they run.
Find the right decision-makers, see verified company data, and export your list in seconds.