CMS Used by UK Fit-Out Companies: Market Share (2026)

Updated June 2026

Detected CMS usage across 7,526 UK fit-out companies, with WordPress ahead at 72.3% of identified sites.

Around 9,830 trading UK fit-out companies sit in scope, with 7,526 showing a detectable CMS. WordPress accounts for 72.3% of those detected sites, covering 5,443 companies, ahead of Wix at 12.9% with 971 companies and Squarespace at 5.7% with 430 companies.

The same pattern holds across headcount bands. WordPress is used by 71.8% of detected companies under 10 employees, 73.5% of those with 10–50 employees, and 80.0% of those over 50 employees.

The long tail is visible but shallow. Duda covers 3.3% of detected companies, Webflow 1.8%, Joomla 0.8%, Weebly 0.5% and It'seeze 0.5%, while 23 further systems cover 174 companies between them.

7,526

fit-out with detected CMS

Of 9,830 UK fit-out

76.6%

Detection rate

2026

Systems detected

In this category

72.3%

Leader share

WordPress

UK Fit-Out CMS market share

Joomla

Other (23 systems)

Share of the 7,526 UK Fit-Out with a detectable system. As of June 2026.

CMS compared

System	UK Fit-Out	Share	Median headcount	London share	Typical profile
WordPress	5,443	72.3%	5	16.9%	Mainstream small fit-out firms
Wix	971	12.9%	5	16.9%	Small owner-managed fit-out firms
Squarespace	430	5.7%	5	21.4%	Small, London-skewed fit-out firms
Duda	245	3.3%	5	11.4%	Small agency-managed fit-out sites
Webflow	135	1.8%	5	25.9%	Small, London-skewed design-led firms
Joomla	63	0.8%	5	11.1%	Small legacy CMS adopters
Weebly	40	0.5%	—	—	View these companies in Firmbase →
It'seeze	38	0.5%	—	—	View these companies in Firmbase →
Craft CMS	34	0.5%	—	—	View these companies in Firmbase →
Drupal	31	0.4%	—	—	View these companies in Firmbase →
ProcessWire	16	0.2%	—	—	View these companies in Firmbase →
Sanity	14	0.2%	—	—	View these companies in Firmbase →
Concrete CMS	13	0.2%	—	—	View these companies in Firmbase →
ExpressionEngine	11	0.1%	—	—	View these companies in Firmbase →
Blogger	10	0.1%	—	—	View these companies in Firmbase →
Business Catalyst	8	0.1%	—	—	View these companies in Firmbase →
DNN	7	0.1%	—	—	View these companies in Firmbase →
Contentful	6	0.1%	—	—	View these companies in Firmbase →
YourCMS	6	0.1%	—	—	View these companies in Firmbase →
Statamic	6	0.1%	—	—	View these companies in Firmbase →
MODX	6	0.1%	—	—	View these companies in Firmbase →
October CMS	5	0.1%	—	—	View these companies in Firmbase →
Silverstripe	5	0.1%	—	—	View these companies in Firmbase →
Adobe Experience Manager	4	0.1%	—	—	View these companies in Firmbase →
TYPO3 CMS	3	0%	—	—	View these companies in Firmbase →
DatoCMS	3	0%	—	—	View these companies in Firmbase →
Prismic	3	0%	—	—	View these companies in Firmbase →
Tridion	2	0%	—	—	View these companies in Firmbase →
Umbraco	1	0%	—	—	View these companies in Firmbase →
Kentico	1	0%	—	—	View these companies in Firmbase →
Storyblok	1	0%	—	—	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 Fit-Out with under 10 employees, WordPress leads at 71.8% of the 5,723 with a detectable system; among UK Fit-Out with 10–50 employees, WordPress leads at 73.5% of the 1,693 with a detectable system; and among UK Fit-Out with over 50 employees, WordPress leads at 80% of the 110 with a detectable system.

Under 10 employees

WordPress

71.8% of band

Small fit-out companies make up the largest detected band, with 5,723 companies. WordPress leads with 71.8%, while Wix and Squarespace account for much of the visible alternative usage.

10–50 employees

WordPress

73.5% of band

The mid-sized band covers 1,693 companies and still tilts towards WordPress, which has 73.5% share. The remaining usage is spread across site-builder and agency-managed CMS options.

Over 50 employees

WordPress

80% of band

The largest fit-out companies form a small detected cohort of 110 companies. WordPress has 80.0% share in this band, leaving a narrow tail for other CMS systems.

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 Fit-Out by CMS

Fit-Out Companies Using WordPress in the UK Fit-Out Companies Using Wix in the UK Fit-Out Companies Using Squarespace in the UK Fit-Out Companies Using Duda in the UK Fit-Out Companies Using Webflow 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)Fit-Out in the UK

Frequently asked questions

What is the most-used CMS among UK fit-out companies?

WordPress is the most-detected CMS among UK fit-out companies, with 72.3% share (5,443 of 7,526 companies with a detectable system), ahead of Wix (12.9%) and Squarespace (5.7%).

How many UK fit-out companies have a detectable CMS?

7,526 of 9,830 actively-trading UK fit-out companies (76.6%) 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 the system used to create, edit and publish a company website without rebuilding each page by hand. For UK fit-out companies, it typically supports service pages, project pages, news updates and enquiry routes for prospective clients.

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 fit-out companies, WordPress or Wix?

WordPress: 5,443 detected companies versus 971 for Wix, of the 7,526 UK fit-out companies with a detectable CMS.

What is the best CMS for UK fit-out companies?

This page publishes usage data rather than recommendations, so it does not name a single best CMS. WordPress leads every detected size band: 71.8% among 5,723 companies under 10 employees, 73.5% among 1,693 companies with 10–50 employees, and 80.0% among 110 companies over 50 employees.

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