WordPress plugins Used by UK Fit-Out Companies: Market Share (2026)
Among 1,047 UK fit-out companies with a detectable WordPress plugin, Site Kit leads at 32.6%, ahead of Essential Addons for Elementor at 12.4%.
Among 9,830 trading UK fit-out companies, 1,047 have a detectable WordPress plugin. The market is split across 23 systems, but Site Kit accounts for the largest share at 32.6% (341).
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Essential Addons for Elementor follows at 12.4% (130), just ahead of Max Mega Menu at 12.2% (128). Jetpack has 10.4% (109), Smush has 10.0% (105), and a mid-table group includes JetEngine at 5.2% (54), Breadcrumb NavXT at 5.1% (53), and iThemes at 4.6% (48).
Site Kit has the largest share in every employee band: 32.5% among Under 10 employees, 31.2% among 10–50 employees, and 60.0% among Over 50 employees. The long tail remains sizeable, with 15 further systems covering 149 companies.
1,047
fit-out with detected WordPress plugins
Of 9,830 UK fit-out
10.7%
Detection rate
2026
23
Systems detected
In this category
32.6%
Leader share
Site Kit
UK Fit-Out WordPress plugins market share
Share of the 1,047 UK Fit-Out with a detectable system. As of June 2026.
WordPress plugins compared
| System | UK Fit-Out | Share | Median headcount | London share | Typical profile |
|---|---|---|---|---|---|
| Site Kit | 341 | 32.6% | 5 | 11.7% | 5-person firms, broadest share |
| Essential Addons for Elementor | 130 | 12.4% | 5 | 18.5% | 5-person firms, London-skewed users |
| Max Mega Menu | 128 | 12.2% | 4 | 8.6% | 4-person firms, lower London share |
| Jetpack | 109 | 10.4% | 5 | 16.5% | 5-person firms, London-skewed users |
| Smush | 105 | 10% | 6 | 10.5% | 6-person firms, mid-sized users |
| JetEngine | 54 | 5.2% | 5 | 18.5% | 5-person firms, London-skewed users |
| Breadcrumb NavXT | 53 | 5.1% | 5 | 22.6% | 5-person firms, highest London share |
| iThemes | 48 | 4.6% | — | — | View these companies in Firmbase → |
| GoDaddy CoBlocks | 40 | 3.8% | — | — | View these companies in Firmbase → |
| EWWW Image Optimizer | 33 | 3.2% | — | — | View these companies in Firmbase → |
| Autoptimize | 21 | 2% | — | — | View these companies in Firmbase → |
| Animate It | 17 | 1.6% | — | — | View these companies in Firmbase → |
| GenerateBlocks | 17 | 1.6% | — | — | View these companies in Firmbase → |
| Perfmatters | 16 | 1.5% | — | — | View these companies in Firmbase → |
| Elementor Addon Elements | 14 | 1.3% | — | — | View these companies in Firmbase → |
| Essential Blocks | 12 | 1.1% | — | — | View these companies in Firmbase → |
| a3 Lazy Load | 9 | 0.9% | — | — | View these companies in Firmbase → |
| ContentViews | 8 | 0.8% | — | — | View these companies in Firmbase → |
| WP Portfolio | 7 | 0.7% | — | — | View these companies in Firmbase → |
| Advanced Custom Fields | 4 | 0.4% | — | — | View these companies in Firmbase → |
| HT Mega | 3 | 0.3% | — | — | View these companies in Firmbase → |
| Flying Pages | 3 | 0.3% | — | — | View these companies in Firmbase → |
| Shortcodes Ultimate | 3 | 0.3% | — | — | 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 Fit-Out with under 10 employees, Site Kit leads at 32.5% of the 766 with a detectable system; among UK Fit-Out with 10–50 employees, Site Kit leads at 31.2% of the 266 with a detectable system; and among UK Fit-Out with over 50 employees, Site Kit leads at 60% of the 15 with a detectable system.
Under 10 employees
32.5% of band
This is the largest band, with 766 companies and Site Kit at 32.5%. Usage beyond Site Kit is spread across a 23-system market, which points to a fragmented plugin mix among smaller fit-out firms.
10–50 employees
31.2% of band
This band covers 266 companies, with Site Kit holding the largest share at 31.2%. Essential Addons for Elementor, Max Mega Menu, Jetpack and Smush sit in the wider competitive set across the full market.
Over 50 employees
60% of band
This is a small band, with 15 companies and Site Kit at 60.0%. The limited count makes the segment more concentrated than the smaller-company bands.
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 Fit-Out by WordPress plugins
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