SEO Used by UK Media Companies: Market Share (2026)
Detectable SEO use across 1,396 of 92,168 trading UK media companies, led by Yoast SEO at 81.1% of detections.
Among 92,168 trading UK media companies, 1,396 have a detectable SEO system. Yoast SEO accounts for 81.1% (1,132) of those detections, with RankMath SEO at 8.1% (113) and All in One SEO at 8.0% (112).
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The detected market is weighted towards smaller employers: Under 10 employees contains 1,039 companies, compared with 327 in 10–50 employees and 30 in Over 50 employees. Yoast SEO is ahead in all three bands, with 82.4%, 76.8% and 83.3% respectively.
After the three largest systems, the tail is short. SEOmatic has 2.6% (36), The SEO Framework 0.9% (13), Google XML Sitemaps 0.3% (4), and Spotzer 0.1% (1).
What’s in the file
One row per company, 14 columns. The contact columns unlock when you get the list.
Included
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1,393
media with detected SEO
Of 93,030 UK media
1.5%
Detection rate
2026
8
Systems detected
In this category
81%
Leader share
Yoast SEO
UK Media SEO market share
Share of the 1,393 UK Media with a detectable system. As of June 2026.
SEO compared
| System | UK Media | Share | Median headcount | London share | Typical profile |
|---|---|---|---|---|---|
| Yoast SEO | 1,128 | 81% | 5 | 40.1% | Five-person media firms, 81.1% share |
| RankMath SEO | 115 | 8.3% | 6 | 35.7% | Six-person media firms, 8.1% share |
| All in One SEO | 112 | 8% | 5 | 35.7% | Five-person media firms, 8.0% share |
| SEOmatic | 35 | 2.5% | — | — | Get these companies as a spreadsheet → |
| The SEO Framework | 13 | 0.9% | — | — | Get these companies as a spreadsheet → |
| Google XML Sitemaps | 4 | 0.3% | — | — | Get these companies as a spreadsheet → |
| SEOPlatform.io | 2 | 0.1% | — | — | Get these companies as a spreadsheet → |
| Spotzer | 1 | 0.1% | — | — | Get these companies as a spreadsheet → |
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 Media with under 10 employees, Yoast SEO leads at 82.2% of the 1,036 with a detectable system; among UK Media with 10–50 employees, Yoast SEO leads at 76.7% of the 326 with a detectable system; and among UK Media with over 50 employees, Yoast SEO leads at 83.9% of the 31 with a detectable system.
Under 10 employees
82.2% of band
Under 10 employees contains 1,039 detected UK media companies, making it the largest band here. Yoast SEO is ahead with 82.4%, leaving limited share for the rest of the market.
10–50 employees
76.7% of band
10–50 employees contains 327 detected companies, with Yoast SEO at 76.8%. RankMath SEO and All in One SEO remain the main named alternatives across the wider detected market.
Over 50 employees
83.9% of band
Over 50 employees contains 30 detected companies, so small changes in adoption can move the band mix. Yoast SEO is still ahead, with 83.3% of detections.
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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