SEO Used by UK Bookkeeping Companies: Market Share (2026)
Detected SEO usage across 1,186 of 16,727 trading UK bookkeeping companies, with Yoast SEO the most detected system at 77.6% of identified installs.
Among 16,727 trading UK bookkeeping companies, 1,186 have a detectable SEO system. Usage is concentrated: Yoast SEO accounts for 77.6% (920) of detected companies, followed by RankMath SEO at 12.4% (147) and All in One SEO at 9.3% (110).
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The same pattern holds across employee bands. Yoast SEO leads Under 10 employees with 77.0% of 870 detected companies, 10–50 employees with 78.2% of 294, and Over 50 employees with 90.9% of 22.
The long tail is small in this market. The SEO Framework appears at 1.0% (12), SEOmatic at 0.4% (5), Google XML Sitemaps at 0.3% (3), and Spotzer at 0.1% (1).
1,189
bookkeeping with detected SEO
Of 16,981 UK bookkeeping
7%
Detection rate
2026
8
Systems detected
In this category
77.7%
Leader share
Yoast SEO
UK Bookkeeping SEO market share
Share of the 1,189 UK Bookkeeping with a detectable system. As of June 2026.
SEO compared
| System | UK Bookkeeping | Share | Median headcount | London share | Typical profile |
|---|---|---|---|---|---|
| Yoast SEO | 924 | 77.7% | 6 | 20.3% | Small practices, broad detected usage |
| RankMath SEO | 145 | 12.2% | 7 | 29% | Small practices, London-skewed minority usage |
| All in One SEO | 111 | 9.3% | 5 | 21.6% | Micro practices, minority detected usage |
| The SEO Framework | 12 | 1% | — | — | View these companies in Firmbase → |
| SEOmatic | 5 | 0.4% | — | — | View these companies in Firmbase → |
| SEOPlatform.io | 3 | 0.3% | — | — | View these companies in Firmbase → |
| Google XML Sitemaps | 3 | 0.3% | — | — | View these companies in Firmbase → |
| Spotzer | 1 | 0.1% | — | — | 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 SEO system shifts with company size: among UK Bookkeeping with under 10 employees, Yoast SEO leads at 77.2% of the 868 with a detectable system; among UK Bookkeeping with 10–50 employees, Yoast SEO leads at 78.3% of the 299 with a detectable system; and among UK Bookkeeping with over 50 employees, Yoast SEO leads at 90.9% of the 22 with a detectable system.
Under 10 employees
77.2% of band
Small bookkeeping firms make up most detectable usage, with 870 companies in this band. Yoast SEO leads with 77.0%, while RankMath SEO and All in One SEO account for much of the remaining detected market.
10–50 employees
78.3% of band
Mid-sized bookkeeping employers show a similar distribution across 294 detected companies. Yoast SEO leads with 78.2%, leaving a narrower contest among the other detected systems.
Over 50 employees
90.9% of band
Larger bookkeeping companies form a small detected cohort, with 22 companies in this band. Yoast SEO is more concentrated here, leading with 90.9%.
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 Bookkeeping by SEO
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Frequently asked questions
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