Most-Used Appointment scheduling by UK Companies (2026)
A market-share directory of detected appointment scheduling systems across 4,200 UK companies, with Calendly on 64.1%.
Among 2,038,354 trading UK companies, 4,200 have a detectable appointment scheduling system. Calendly accounts for 64.1% of those detections, or 2,694 companies, putting it well ahead of Acuity Scheduling at 8.5% (356) and SevenRooms at 6.9% (289).
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Usage is concentrated at the smaller end of the employer base. Calendly has 68.0% share among 2,564 companies under 10 employees, 59.6% among 1,459 companies with 10–50 employees, and 45.2% among 177 companies over 50 employees.
The long tail is still visible. Bookly has 3.3% (138), vcita 2.9% (123), SimplyBook.me 2.5% (107), Setmore 2.3% (98), Fresha 2.0% (86), and 6 further systems cover 373 companies.
4,192
Companies with detected Appointment scheduling
Of 2,048,224 UK companies
0.2%
Detection rate
2026
14
Systems detected
In this category
64.1%
Leader share
Calendly
UK companies Appointment scheduling market share
Share of the 4,192 UK companies with a detectable system. As of June 2026.
Appointment scheduling compared
| System | UK companies | Share | Median headcount | London share | Typical profile |
|---|---|---|---|---|---|
| Calendly | 2,708 | 64.6% | 7 | 29% | Small employers, largest share |
| Acuity Scheduling | 358 | 8.5% | 8 | 22.8% | Small employers, secondary share |
| SevenRooms | 288 | 6.9% | 17 | 49% | Larger teams, London-skewed use |
| Bookly | 138 | 3.3% | — | — | Buy these companies as a spreadsheet → |
| vcita | 123 | 2.9% | — | — | Buy these companies as a spreadsheet → |
| SimplyBook.me | 108 | 2.6% | — | — | Buy these companies as a spreadsheet → |
| Setmore | 97 | 2.3% | — | — | Buy these companies as a spreadsheet → |
| Fresha | 87 | 2.1% | — | — | Buy these companies as a spreadsheet → |
| SiteMinder | 86 | 2.1% | — | — | Buy these companies as a spreadsheet → |
| Arlo | 70 | 1.7% | — | — | Buy these companies as a spreadsheet → |
| Mews | 70 | 1.7% | — | — | Buy these companies as a spreadsheet → |
| FareHarbor | 63 | 1.5% | — | — | Buy these companies as a spreadsheet → |
| Mindbody | 59 | 1.4% | — | — | Buy these companies as a spreadsheet → |
| Chili Piper | 57 | 1.4% | — | — | Buy 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 Appointment scheduling system shifts with company size: among UK companies with under 10 employees, Calendly leads at 68.1% of the 2,561 with a detectable system; among UK companies with 10–50 employees, Calendly leads at 59.3% of the 1,453 with a detectable system; and among UK companies with over 50 employees, Calendly leads at 45.5% of the 178 with a detectable system.
Under 10 employees
68.1% of band
The smallest employer band contains 2,564 detected companies, with Calendly used by 68.0% of them. Acuity Scheduling, SevenRooms and the remaining systems split the rest of a market shaped by small teams and owner-managed service businesses.
10–50 employees
59.3% of band
Companies with 10–50 employees account for 1,459 detections, and Calendly remains first with 59.6% share. Competition is less concentrated than in the under-10 band, with Acuity Scheduling, SevenRooms and specialist tools more visible.
Over 50 employees
45.5% of band
The over-50 employee band is much smaller, at 177 detected companies, and Calendly still ranks first with 45.2% share. Larger teams appear more likely to use a wider mix of appointment scheduling systems, including SevenRooms.
How Appointment scheduling 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 companies by Appointment scheduling
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Frequently asked questions
What is the most-used Appointment scheduling among UK companies?
How many UK companies have a detectable Appointment scheduling?
What is a Appointment scheduling?
How is Appointment scheduling usage detected?
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What is the best Appointment scheduling for UK companies?
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