CMS Used by UK Startup Companies: Market Share (2026)

Updated June 2026

Detected CMS market share across 1,671 UK startup companies, with WordPress the largest observed system at 48.2% (806 companies).

Among 2,576 trading UK startup companies, 1,671 have a detectable CMS, with 24 systems detected. WordPress accounts for 48.2% of detected companies (806), ahead of Webflow at 22.1% (369), Squarespace at 11.7% (195), and Wix at 10.3% (172).

Company size does not change the leader. WordPress leads Under 10 employees with 49.3% of 1,268 companies, 10–50 employees with 44.8% of 397 companies, and Over 50 employees with 50.0% of 6 companies.

Outside the four main systems, Sanity has 2.6% (44), Contentful 1.6% (27), Prismic 1.1% (19), and Storyblok 0.8% (13). A further 16 systems cover 61 companies, so the long tail is visible but small beside WordPress and Webflow.

1,671

startup with detected CMS

Of 2,576 UK startup

64.9%

Detection rate

2026

Systems detected

In this category

48.2%

Leader share

WordPress

UK Startup CMS market share

Prismic

Storyblok

Other (16 systems)

Share of the 1,671 UK Startup with a detectable system. As of June 2026.

CMS compared

System	UK Startup	Share	Median headcount	London share	Typical profile
WordPress	806	48.2%	6	33.3%	806 companies, six-person median headcount
Webflow	369	22.1%	6	55%	369 companies, six-person median headcount
Squarespace	195	11.7%	6	35.9%	195 companies, six-person median headcount
Wix	172	10.3%	5	36%	172 companies, five-person median headcount
Sanity	44	2.6%	—	—	View these companies in Firmbase →
Contentful	27	1.6%	—	—	View these companies in Firmbase →
Prismic	19	1.1%	—	—	View these companies in Firmbase →
Storyblok	13	0.8%	—	—	View these companies in Firmbase →
Duda	12	0.7%	—	—	View these companies in Firmbase →
DatoCMS	10	0.6%	—	—	View these companies in Firmbase →
Drupal	10	0.6%	—	—	View these companies in Firmbase →
Craft CMS	10	0.6%	—	—	View these companies in Firmbase →
Ghost	9	0.5%	—	—	View these companies in Firmbase →
Joomla	6	0.4%	—	—	View these companies in Firmbase →
Weebly	4	0.2%	—	—	View these companies in Firmbase →
Statamic	4	0.2%	—	—	View these companies in Firmbase →
Adobe Experience Manager	3	0.2%	—	—	View these companies in Firmbase →
Blogger	3	0.2%	—	—	View these companies in Firmbase →
ExpressionEngine	3	0.2%	—	—	View these companies in Firmbase →
TYPO3 CMS	2	0.1%	—	—	View these companies in Firmbase →
MODX	2	0.1%	—	—	View these companies in Firmbase →
ProcessWire	1	0.1%	—	—	View these companies in Firmbase →
It'seeze	1	0.1%	—	—	View these companies in Firmbase →
DNN	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 CMS system shifts with company size: among UK Startup with under 10 employees, WordPress leads at 49.3% of the 1,268 with a detectable system; among UK Startup with 10–50 employees, WordPress leads at 44.8% of the 397 with a detectable system; and among UK Startup with over 50 employees, WordPress leads at 50% of the 6 with a detectable system.

Under 10 employees

WordPress

49.3% of band

WordPress accounts for 49.3% of 1,268 companies in this band. Competition around it comes from the wider CMS mix seen across UK startup companies, including Webflow, Squarespace and Wix.

10–50 employees

WordPress

44.8% of band

WordPress accounts for 44.8% of 397 companies in this band, a lower share than among Under 10 employees. That leaves more room for the wider set of detected CMS choices.

Over 50 employees

WordPress

50% of band

WordPress accounts for 50.0% of 6 companies in this band. The sample is small, so comparisons between systems should be treated cautiously.

How CMS usage is detected

Methodology

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.

Sources

All product names are trademarks of their respective owners. Firmbase is not affiliated with, sponsored by, or endorsed by any trademark owner.

UK Startup by CMS

Startup Companies Using WordPress in the UK Startup Companies Using Webflow in the UK Startup Companies Using Squarespace in the UK Startup Companies Using Wix in the UK

Related directories

Most-Used CMS by UK Companies (2026)CMS Used by UK B2B Companies: Market Share (2026)CMS Used by UK B2C Companies: Market Share (2026)CMS Used by UK Field Services Companies: Market Share (2026)CMS Used by UK Construction Companies: Market Share (2026)Startup in the UK

Frequently asked questions

What is the most-used CMS among UK startup companies?

WordPress is the most-detected CMS among UK startup companies, with 48.2% share (806 of 1,671 companies with a detectable system), ahead of Webflow (22.1%) and Squarespace (11.7%).

How many UK startup companies have a detectable CMS?

1,671 of 2,576 actively-trading UK startup companies (64.9%) have a CMS detectable from their public website. The remainder either run systems with no public web footprint or none at all, so detected share figures are a conservative floor.

What is a CMS?

A CMS is software used to create, edit and publish website content without rebuilding the site each time. For UK startup companies, it usually sits behind the marketing site and handles pages, copy, media, forms and content workflows.

How is CMS usage detected?

Firmbase crawls the public website of every actively-trading company in this scope and fingerprints the technologies present — scripts, widgets, booking and checkout flows. A company is attributed to a system when that system's signatures are found; systems with no public web footprint are not attributable, which is why every share figure on this page means share of companies with a detectable system.

Which has more UK startup companies, WordPress or Webflow?

WordPress: 806 detected companies versus 369 for Webflow, of the 1,671 UK startup companies with a detectable CMS.

What is the best CMS for UK startup companies?

The directory reports observed CMS usage rather than recommendations, so “best” depends on a company’s needs rather than rank here. WordPress is the largest detected system overall at 48.2% (806), followed by Webflow at 22.1% (369), Squarespace at 11.7% (195) and Wix at 10.3% (172). It also leads every size band: Under 10 employees at 49.3% of 1,268 companies, 10–50 employees at 44.8% of 397 companies, and Over 50 employees at 50.0% of 6 companies.

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