SEO Used by UK construction: Market Share (2026)
Detected SEO market share across 10,271 UK construction companies, led by Yoast SEO at 78.0% (8,016 companies).
Among 237,407 trading UK construction companies, 10,271 have a detectable SEO system. Seven systems are detected, with usage concentrated around Yoast SEO at 78.0% (8,016).
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RankMath SEO sits a distant second on 11.0% (1,125), followed by All in One SEO on 9.3% (956). Yoast SEO is also consistent by size band, with 78.2% under 10 employees, 77.9% among companies with 10–50 employees and 76.2% over 50 employees.
The long tail is small but visible. The SEO Framework has 1.4% (141), SEOmatic has 0.8% (83), Google XML Sitemaps has 0.3% (35) and Spotzer has 0.2% (18).
10,271
construction with detected SEO
Of 237,407 UK construction
4.3%
Detection rate
2026
7
Systems detected
In this category
78%
Leader share
Yoast SEO
UK construction SEO market share
Share of the 10,271 UK construction with a detectable system. As of June 2026.
SEO compared
| System | UK construction | Share | Median headcount | London share | Typical profile |
|---|---|---|---|---|---|
| Yoast SEO | 8,016 | 78% | 5 | 12.5% | Micro firms, broad construction base |
| RankMath SEO | 1,125 | 11% | 6 | 12.8% | Small firms, broad construction base |
| All in One SEO | 956 | 9.3% | 5 | 13.5% | Micro firms, slightly London-skewed |
| The SEO Framework | 141 | 1.4% | 4 | 19.1% | Micro firms, London-skewed niche |
| SEOmatic | 83 | 0.8% | 4 | 38.6% | Micro firms, London-heavy niche |
| Google XML Sitemaps | 35 | 0.3% | — | — | View these companies in Firmbase → |
| Spotzer | 18 | 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
Under 10 employees
78.2% of band
Under 10 employees contains 7,332 detected construction companies, mainly micro employers. Yoast SEO has 78.2% of this band, with RankMath SEO, All in One SEO and the smaller systems dividing the remainder.
10–50 employees
77.9% of band
10–50 employees contains 2,658 detected construction companies. Yoast SEO has 77.9%, so the competitive shape remains close to the overall market rather than shifting toward a different system.
Over 50 employees
76.2% of band
Over 50 employees contains 281 detected construction companies. Yoast SEO still has 76.2%, leaving a smaller addressable field for RankMath SEO, All in One SEO and the long-tail systems.
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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UK construction by SEO
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Frequently asked questions
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