SEO Used by UK field services: Market Share (2026)
Detected SEO usage across 11,361 of 245,937 trading UK field services companies, with Yoast SEO used by 77.2% of detected companies.
Among 245,937 trading UK field services companies, 11,361 have a detectable SEO system. Seven systems are detected, with Yoast SEO accounting for 77.2% (8,767 companies), ahead of RankMath SEO at 12.2% (1,384) and All in One SEO at 9.5% (1,081).
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Yoast SEO has the largest share in every employee band: 77.3% among Under 10 employees, 77.1% among 10–50 employees, and 75.0% among Over 50 employees. The pattern is similar across smaller operators and larger field services firms, with only limited variation by headcount band.
The long tail is thin. The SEO Framework accounts for 1.1% (130 companies), followed by Google XML Sitemaps at 0.4% (40), SEOmatic at 0.3% (37), and Spotzer at 0.3% (31).
11,361
field services with detected SEO
Of 245,937 UK field services
4.6%
Detection rate
2026
7
Systems detected
In this category
77.2%
Leader share
Yoast SEO
UK field services SEO market share
Share of the 11,361 UK field services with a detectable system. As of June 2026.
SEO compared
| System | UK field services | Share | Median headcount | London share | Typical profile |
|---|---|---|---|---|---|
| Yoast SEO | 8,767 | 77.2% | 6 | 11.4% | 77.2% share, median 6 employees |
| RankMath SEO | 1,384 | 12.2% | 7 | 9.8% | 12.2% share, median 7 employees |
| All in One SEO | 1,081 | 9.5% | 6 | 11.6% | 9.5% share, median 6 employees |
| The SEO Framework | 130 | 1.1% | 6 | 12.3% | 1.1% share, median 6 employees |
| Google XML Sitemaps | 40 | 0.4% | — | — | View these companies in Firmbase → |
| SEOmatic | 37 | 0.3% | — | — | View these companies in Firmbase → |
| Spotzer | 31 | 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
Under 10 employees
77.3% of band
This band contains 7,893 companies with detectable SEO use, making it the largest employee segment. Yoast SEO has the largest share here at 77.3%, with the remaining usage split across smaller systems.
10–50 employees
77.1% of band
The 10–50 employees band covers 3,152 companies with detectable SEO use. Yoast SEO remains largest at 77.1%, almost unchanged from the Under 10 employees band.
Over 50 employees
75% of band
The Over 50 employees band is much smaller, with 316 companies detected. Yoast SEO still has the largest share at 75.0%, suggesting limited movement away from the main system among larger field services companies.
How SEO 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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Frequently asked questions
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