Form builder Used by UK Construction Companies: Market Share (2026)
Detected Form builder usage across 7,905 UK construction companies, with Contact Form 7 the largest system at 65.7% share.
Among 241,271 trading UK construction companies, 7,905 have a detectable Form builder. The market is concentrated around Contact Form 7 at 65.7% (5,193) and Gravity Forms at 21.0% (1,658), with WPForms at 4.5% (352) and Ninja Forms at 4.2% (335) forming the next tier.
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Small firms make up most of the visible usage: the Under 10 employees band contains 5,631 companies, compared with 2,051 in 10–50 employees and 223 in Over 50 employees. Contact Form 7 leads each band, but its share narrows from 67.3% under 10 employees to 62.1% in 10–50 employees and 57.0% over 50 employees.
The long tail remains present, not large. Fluent Forms has 1.8% (139), Jotform 1.7% (135), 123FormBuilder 0.8% (65) and Typeform 0.7% (59), while 15 further systems cover 204 companies across a market where 23 systems are detected.
7,905
construction with detected Form builder
Of 241,271 UK construction
3.3%
Detection rate
2026
23
Systems detected
In this category
65.7%
Leader share
Contact Form 7
UK Construction Form builder market share
Share of the 7,905 UK Construction with a detectable system. As of June 2026.
Form builder compared
| System | UK Construction | Share | Median headcount | London share | Typical profile |
|---|---|---|---|---|---|
| Contact Form 7 | 5,193 | 65.7% | 5 | 14.9% | Five-person contractors, broadest usage |
| Gravity Forms | 1,658 | 21% | 6 | 11.9% | Six-person contractors, second-largest usage |
| WPForms | 352 | 4.5% | 5 | 21.6% | Five-person contractors, London-skewed usage |
| Ninja Forms | 335 | 4.2% | 5 | 14.6% | Five-person contractors, fourth-largest usage |
| Fluent Forms | 139 | 1.8% | 5 | 12.9% | Five-person contractors, smaller usage base |
| Jotform | 135 | 1.7% | 5 | 9.6% | Five-person contractors, lower London share |
| 123FormBuilder | 65 | 0.8% | 6 | 10.8% | Six-person contractors, niche usage base |
| Typeform | 59 | 0.7% | 5 | 18.6% | Five-person contractors, London-tilted usage |
| Cognito Forms | 51 | 0.6% | 5 | 5.9% | Five-person contractors, lowest London share |
| Formspree | 31 | 0.4% | — | — | View these companies in Firmbase → |
| WS Form | 31 | 0.4% | — | — | View these companies in Firmbase → |
| Wufoo | 28 | 0.4% | — | — | View these companies in Firmbase → |
| Caldera Forms | 25 | 0.3% | — | — | View these companies in Firmbase → |
| Google Forms | 18 | 0.2% | — | — | View these companies in Firmbase → |
| FormSubmit | 12 | 0.2% | — | — | View these companies in Firmbase → |
| Magic Form Builder | 11 | 0.1% | — | — | View these companies in Firmbase → |
| Formstack | 10 | 0.1% | — | — | View these companies in Firmbase → |
| Basin | 10 | 0.1% | — | — | View these companies in Firmbase → |
| Tally | 4 | 0.1% | — | — | View these companies in Firmbase → |
| Paperform | 3 | 0% | — | — | View these companies in Firmbase → |
| Getsitecontrol | 3 | 0% | — | — | View these companies in Firmbase → |
| Powerful Form | 2 | 0% | — | — | View these companies in Firmbase → |
| Zoho Forms | 2 | 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 Form builder system shifts with company size: among UK Construction with under 10 employees, Contact Form 7 leads at 67.3% of the 5,631 with a detectable system; among UK Construction with 10–50 employees, Contact Form 7 leads at 62.1% of the 2,051 with a detectable system; and among UK Construction with over 50 employees, Contact Form 7 leads at 57% of the 223 with a detectable system.
Under 10 employees
67.3% of band
This is the main volume band, with 5,631 companies and a Contact Form 7 share of 67.3%. Gravity Forms is the largest named alternative overall at 21.0% (1,658), while WPForms and Ninja Forms sit at 4.5% (352) and 4.2% (335).
10–50 employees
62.1% of band
This band contains 2,051 companies, and Contact Form 7 still leads at 62.1%. Gravity Forms has 21.0% (1,658) overall, while the 15-system tail covers 204 companies.
Over 50 employees
57% of band
This band contains 223 companies with more than 50 employees. Contact Form 7 leads at 57.0%, leaving more room than in smaller bands for alternatives such as Gravity Forms, WPForms and Ninja Forms, which have 21.0% (1,658), 4.5% (352) and 4.2% (335) overall.
How Form builder 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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