Companies Using Calendly in the UK: 2,708 Active Firms (2026)
UK companies running online scheduling tools on their websites let prospects and customers book meetings directly, with GDPR and PECR relevant to data capture.
Buying centres usually sit with revenue operations, sales, customer success and marketing operations, rather than with IT alone. Companies running embedded scheduling software tend to have public lead-capture journeys, repeat meeting types and customer-facing teams that need to route prospects or clients without manual diary handling. Adoption also signals a certain go-to-market maturity: enough inbound demand to justify standardised booking flows, but usually a preference for low-friction software subscriptions over large implementation projects. The typical use case is practical rather than strategic — demo requests, onboarding calls, consultations, training sessions and account meetings.
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The UK adoption picture covers 2,708 active UK companies running this scheduling stack. Reported employment across the cohort totals 6,443 people, giving it a visible operating footprint beyond micro-business website experimentation. The companies most often resemble upper-SME and mid-market organisations with public websites, digital enquiry paths and customer-facing teams that need appointment workflows to connect marketing, sales and service activity. The pattern is therefore closer to revenue and operations enablement than to a narrow website plug-in market.
Scheduling flows commonly collect names, email addresses, meeting notes and online identifiers, so UK GDPR duties are relevant where those details relate to identifiable people. The Data Protection Act also matters where UK GDPR applies. The ICO’s position on cookies is especially practical for embedded booking pages and related analytics: organisations need to tell users that cookies are present, explain their purpose and obtain consent unless the cookie is strictly necessary for a service requested by the user. PECR also reaches electronic marketing messages, which can sit close to follow-up workflows after a meeting is booked.
Adoption appears likely to move from standalone booking links towards more bundled customer-operations workflows. Calendar access, routing rules, consent capture and sales hand-off tend to become procurement concerns once a tool is used across several customer-facing teams. Smaller organisations may keep using simple embedded forms and booking pages, while more mature users are likely to ask for tighter governance around permissions, retention and marketing follow-up. Vendor choice has been shaped by convenience, but privacy review and integration fit should matter more as scheduling becomes part of the wider customer record.
What’s in the file
One row per company, 50+ columns — everything below plus each company’s verified directors, from Companies House filings.
Company data
Verified directors — included
Adoption by company size
Adoption of Calendly rises with company size across the trading companies in this cohort. 0.1% of the 1,970,933 companies with under 10 employees run Calendly (1,722 detected). 1% of the 86,190 companies with 10–50 employees run Calendly (859 detected). 0.8% of the 9,358 companies with over 50 employees run Calendly (79 detected). That is a 0.7% gap between the over 50 employees and under 10 employees bands.
2,708
Active firms
2026
111
Above £5M turnover
Trading firms
7
Median headcount
Filed accounts
5,725
Verified directors
Across this cohort
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Key facts
About 4% of the trading cohort reports turnover above £5M (111 of 2,708 firms) — the rest sits below that revenue band.
7% of the cohort was incorporated since 2022 (195 firms), so a sizeable share is in its first few filing cycles.
59.9% of scheduling-technology users also run a content-management system, 54.4% show web-analytics tooling and 51.6% show tag-management tooling.
The largest overlapping sector tags are SaaS at 17.1%, IT services and managed services at 10.6%, marketing agencies at 10.1%, education and training at 10.0%, and accounting and audit at 7.8%.
UK GDPR and the Data Protection Act 2018 are relevant where booking flows process names, email addresses, meeting details or online identifiers; the ICO treats identifiers such as a name, location data or online identifier as personal data.
PECR applies where scheduling pages, embedded widgets or related analytics use cookies or similar technologies, with consent required except for cookies strictly necessary to provide a requested online service.
ONS reported that 69% of UK firms used cloud-based computing systems and applications in 2023 and 61% used specialised software, with technology adoption linked to 19% higher turnover per worker after controls.
What else do Calendly users run?
Share of the 2,708 Calendly-running UK companies where each technology was also detected. As of June 2026.
Who runs Calendly in the UK?
By sector
Sectors overlap, so shares need not sum to 100%.
By financial health
From filed accounts; firms with fewer than two filings show as insufficient history.
7
Median headcount
£469.7K
Median UK turnover
4.1%
Above £5M turnover
195
Incorporated since 2022
Verified directors — included in the file
Director names and roles for these 4,324 companies, alongside financials and websites, in one Excel + CSV file.
Top UK companies using Calendly
Ranked by sales-readiness score: an AI model assesses what each company does, its sector and size, and scores its overall fit. Best-fit prospects appear first.
Financial sub-scores
Computed from 5 filingsDevelops cloud-based customer relationship management (CRM) software for sales and go-to-market teams. Platform provides customizable data models, workflow automation, AI-assisted search and…
Sells to B2B companies’ go-to-market, revenue, sales and business operations teams, especially teams managing customer data, outreach, pipelines and reporting.
Financial Health
StrongStrong · Growing, Hiring · 23% CAGR over 4y
Location
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Computed from 3 filingsProvides software for social housing providers and local authorities to manage tenant engagement, rent collection and debt recovery. Tools include automated communications, case prioritisation,…
Serves social housing providers, social landlords, housing associations and local authorities, particularly teams managing tenant engagement, rent arrears, revenues and benefits, compliance and…
Financial Health
StrongStrong · Growing, Hiring · 27% CAGR over 2y
Location
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Computed from 3 filingsDevelops sales enablement and customer onboarding software. Provides digital sales room workspaces where sales teams share content, proposals, quotes and action plans with buyers, track engagement…
Serves B2B revenue teams, including BDR/SDR teams, account executives, customer success, account management, CROs and partnerships managers involved in sales, onboarding, account management and…
Financial Health
StrongStrong · Growing, Hiring · 78% CAGR over 2y
Location
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Computed from 5 filingsDevelops a software platform that aggregates public sector procurement data and tender notices, helping suppliers identify government contract opportunities, analyse markets, track expiring…
Sells B2B to suppliers pursuing public sector contracts, especially tech and software vendors, plus public sector sales, bid, and procurement teams that need to identify, qualify, track, and win…
Financial Health
StrongStrong · Growing, Hiring · 40% CAGR over 4y
Location
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Computed from 5 filingsProvides cloud-based HR and payroll platform enabling companies to hire, pay, and manage employees and contractors internationally. Offers employer-of-record services, global payroll, compliance…
Serves businesses with international or distributed workforces, especially HR and people teams hiring employees or contractors across multiple countries, plus partners needing global hiring…
Financial Health
StrongStrong · Hiring · 101% CAGR over 4y
Location
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Computed from 2 filingsDevelops cloud-based no‑code software for construction and industrial companies to digitise site paperwork and operational processes, including safety management, quality tracking, field reporting,…
Serves B2B industrial and built-environment companies, including construction, engineering, infrastructure and asset-intensive firms with field, safety, quality, fleet, project delivery and…
Financial Health
StrongStrong · Growing, Hiring · 91% CAGR over 1y
Location
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Computed from 5 filingsDevelops workforce management software for contact centres, providing demand forecasting, staff scheduling, schedule optimisation, real-time operations management, and tools for employee engagement…
Sells to enterprise contact centres and customer service operations, including high-volume organisations in travel, banking and financial services, targeting workforce management, operations and…
Financial Health
HealthyHealthy · Hiring · 17% CAGR over 5y
Location
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Computed from 5 filingsOperates an online bulk SMS platform that enables businesses to send, receive and manage text messages. Provides tools for marketing and transactional messaging, including scheduling, throttling, URL…
Sells to SMEs, enterprise organisations, NHS bodies and government teams in the UK, especially marketing, customer service and operations teams communicating with customers, patients and service…
Financial Health
StrongStrong · Growing, Hiring · 11% CAGR over 4y
Location
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Computed from 5 filingsProvides a business development platform for recruitment professionals. Aggregates direct employer job vacancies, company intelligence, and hiring manager contacts, and offers tools to research…
Sells to B2B recruitment agencies, staffing firms and individual recruiters seeking employer leads, company intelligence and outreach support for business development.
Financial Health
StrongStrong · Growing, Hiring · 37% CAGR over 4y
Location
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Computed from 5 filingsProvides B2B lead generation and demand generation services for governance, risk and compliance (GRC) and RegTech technology vendors, including email marketing, multi‑channel outreach, appointment…
Serves B2B GRC, RegTech, CyberTech, FinTech and InsurTech vendors targeting risk and compliance decision-makers across global markets.
Financial Health
StrongStrong · Hiring · 16% CAGR over 4y
Location
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Computed from 5 filingsProvides support services to an affiliated company that develops and operates a developer data platform. Activities include assisting with sales, marketing, and technical support for cloud database…
Serves software developers, startups, AI innovators and enterprise technology teams, with industry focus on financial services, telecoms, healthcare, retail, public sector and manufacturing.
Financial Health
StrongStrong · Hiring · 28% CAGR over 5y
Location
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Computed from 5 filingsOperates a network of dental practices providing Invisalign orthodontic treatment. Connects patients with registered dentists and orthodontists for consultations, digital smile scans, clear aligner…
Serves UK consumers seeking Invisalign treatment through local dental practices, and targets registered dentists and orthodontists looking to join a national Invisalign provider network.
Financial Health
StrongStrong · Growing, Hiring · 39% CAGR over 4y
Location
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Computed from 5 filingsDevelops a hotel guest experience platform that enables contactless check‑in and check‑out, mobile room keys, in‑app payments, and room service ordering. Integrates with property management and other…
Sells B2B to hotels, including independent properties, chains, boutique hotels and resorts, with hotel operators and staff responsible for guest experience and operations as likely buyers.
Financial Health
StrongStrong
Location
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Computed from 5 filingsProvides a business finance platform that enables companies to pay supplier invoices in instalments, access short‑term cashflow loans and credit lines, and offer flexible payment terms to customers.…
Targets B2B customers: growing businesses managing supplier bills, VAT, inventory, asset purchases, marketing spend or software costs, plus finance brokers introducing client deals and tracking…
Financial Health
StrongStrong · Growing, Hiring · 80% CAGR over 4y
Location
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Computed from 2 filingsDevelops HR management software for businesses, including tools for employee records, payroll, recruitment, absence and leave tracking, and performance management. Provides time and attendance…
Serves UK-based businesses with deskless, field-based, shift and multi-site workforces, including HR, payroll, compliance and operations teams in offices, factories, warehouses, hospitals, shops and…
Financial Health
HealthyHealthy · Hiring · 286% CAGR over 1y
Location
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Computed from 5 filingsDevelops and provides local SEO software and services for businesses and marketing agencies. Platform tracks local search rankings, audits SEO performance, manages business listings and citations,…
Serves marketing agencies and consultants, small businesses, and multi-location brands, with users including local marketers managing search presence for one or many business locations.
Financial Health
StrongStrong · Growing, Hiring · 25% CAGR over 4y
Location
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Computed from 5 filingsOrganises B2B events including industry summits, executive roundtables, networking dinners and virtual events. Also publishes business media such as magazines, interviews and masterclasses that…
Serves B2B technology and professional-service vendors seeking access to senior executives, and enterprise leaders such as CDOs, CMOs and CAIOs in data, marketing and AI across the UK.
Financial Health
StableStable · -5% CAGR over 4y
Location
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Computed from 5 filingsProvides software and advisory services that help businesses identify and pursue public sector tenders. Platform aggregates tender notices, contract data and competitor insights, alongside bid…
Serves businesses and organisations of all sizes seeking to win and retain UK public sector contracts, including bid teams, business development leaders and suppliers targeting tender opportunities.
Financial Health
HealthyHealthy · Hiring · 29% CAGR over 5y
Location
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Computed from 4 filingsDevelops workspace management software and occupancy sensor systems that collect and analyse building usage data. Provides cloud applications and AI tools for space planning, desk and meeting room…
Serves businesses managing offices and workspaces, especially corporate real estate, workplace, facilities and operations teams responsible for space utilisation, occupancy, energy and employee…
Financial Health
StrongStrong · Hiring · 44% CAGR over 3y
Location
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Computed from 4 filingsProvides a software platform for influencer and creator marketing. Offers tools for creator discovery and evaluation, campaign management, payments, brand safety monitoring, and performance…
Serves enterprise marketing teams at global brands, agencies and direct-to-consumer businesses, especially in beauty, fashion, retail, gaming, media and sports, that run creator or influencer…
Financial Health
StrongStrong · Hiring · 43% CAGR over 3y
Location
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Computed from 4 filingsDevelops software for GP practices that automates administrative tasks in primary care, including patient registration processing, laboratory report filing, and online booking tools, helping…
Serves NHS primary care organisations, especially GP practices in England, including practice managers, administrative teams and clinical staff responsible for patient registrations and lab report…
Financial Health
StableStable · Hiring · 92% CAGR over 2y
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Computed from 5 filingsOperates an online marketplace platform connecting brands with independent digital, creative and marketing agencies. Provides tools for posting briefs, matching with agencies, and managing contracts,…
Serves marketing, brand and procurement teams at large organisations and major brands seeking vetted independent digital, creative, media, PR, research and technology agencies.
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StrongStrong
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Computed from 5 filingsProvides an online management platform and directory for GP practices, offering compliance tools, training, HR and rota software, policy and benchmarking systems, and resources. Also lists suppliers…
Sells to UK GP practices, practice managers and surgery teams, plus suppliers and recruiters seeking access to the primary care market.
Financial Health
StrongStrong · Growing, Hiring · 12% CAGR over 4y
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Computed from 5 filingsProvides laboratory and point‑of‑care testing for drugs, alcohol, DNA and prescription medications, including hair, blood and nail analysis. Supplies analytical testing and expert witness reporting…
Serves family law and social work professionals, employers, government bodies, education providers, individuals and safety-sensitive sectors such as aviation, construction, maritime, transport,…
Financial Health
StrongStrong · Growing, Hiring · 34% CAGR over 5y
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Computed from 5 filingsProvides disability student allowance (DSA) needs assessments for higher education students, diagnostic assessments for neurodivergent conditions, workplace needs assessments, and neurodiversity…
Serves neurodiverse individuals across the UK, including higher education students seeking DSA support, employees needing workplace support, educators, and employers aiming to make learning and…
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StrongStrong · Growing, Hiring · 55% CAGR over 4y
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Computed from 5 filingsOperates and markets venues for corporate meetings, conferences, training sessions and team events across Europe. Provides residential and day meeting packages, meeting rooms, event planning support,…
Serves businesses planning corporate meetings, training, team events and conferences, including HR, learning and development, event and office teams seeking venues across major European cities.
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StrongStrong · Growing, Hiring · 28% CAGR over 4y
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Computed from 5 filingsProvides search engine marketing services, managing and optimising paid search advertising campaigns on platforms such as Google and Bing. Uses proprietary AI tools and analytics to audit accounts,…
Serves marketing and growth teams at global brands and high-growth companies, especially mature, high-spend advertisers in travel and ecommerce operating across multiple markets and languages.
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StrongStrong
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Computed from 5 filingsProvides IT consultancy and software solutions focused on Microsoft technologies. Services include cloud strategy, migration and modernisation for Azure and Microsoft 365, workflow automation,…
Serves enterprise and mid-market organisations invested in Microsoft 365, Azure and Power Platform, especially IT, operations, compliance and HR teams managing cloud, data, governance, intranet and…
Financial Health
StrongStrong · Growing, Hiring · 14% CAGR over 4y
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Computed from 5 filingsProvides laboratory and point‑of‑care drug and alcohol testing, including hair, blood and nail analysis. Also conducts DNA, steroid and prescription medication testing, and supplies expert witness…
Serves family law firms, social work teams, employers, public-sector bodies, individuals, and regulated sectors including aviation, construction, housing, finance, maritime, security, sport,…
Financial Health
StrongStrong · Hiring · 11% CAGR over 4y
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Computed from 5 filingsProvides financial planning and wealth management advice, including investment planning, pensions and retirement planning, protection insurance, mortgages, and intergenerational wealth planning. Also…
Serves private clients, retirees and high-earning professionals, alongside business owners, company directors, corporate executives, medical/legal professionals, sports professionals and charities.
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StrongStrong · Growing, Hiring · 82% CAGR over 4y
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Computed from 5 filingsProvides software and booking management services for travel, accommodation, and event logistics. Offers platforms to manage apprenticeship and training programme travel, block accommodation,…
Serves B2B organisations delivering apprenticeships, residential learning, field-based training, corporate travel, meetings and events, including employers and training providers managing learner or…
Financial Health
HealthyHealthy · -65% CAGR over 4y
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Computed from 3 filingsProvides wired and wireless IT infrastructure, internet connectivity and VoIP services for flexible workspaces, coworking operators and commercial real estate. Also offers workspace management…
Serves B2B customers: flexible workspace, serviced office and coworking operators, plus commercial landlords and real estate portfolio owners across the UK and Europe.
Financial Health
StableStable · -2% CAGR over 2y
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Computed from 3 filingsDevelops software for construction sites that captures and analyses data on materials deliveries, waste movements, utilities use, and carbon emissions. The platform digitises on‑site records, tracks…
Serves general contractors, property developers and construction project teams that need site-level materials, waste, utilities and carbon data for compliance, quality assurance and sustainability…
Financial Health
StrongStrong · Hiring · 40% CAGR over 2y
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Computed from 4 filingsProvides apprenticeship programmes, vocational training courses and skills bootcamps in areas including business, sales, marketing, management, events, and health and social care, and offers careers…
Serves employers from household-name brands to smaller specialist organisations, alongside apprentices, 16–18 learners and career changers in business, sales, marketing, management, care, health,…
Financial Health
StableStable · Hiring · 6% CAGR over 3y
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Computed from 5 filingsProvides digital marketing services including search engine optimisation, AI search strategy, pay‑per‑click advertising, content marketing, email automation, analytics, conversion rate optimisation,…
Serves businesses seeking digital marketing growth, including eCommerce brands, B2B and B2C companies, and firms in finance, healthcare and legal sectors, from retailers to professional services…
Financial Health
HealthyHealthy · Hiring · 15% CAGR over 4y
Location
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Computed from 5 filingsDevelops and operates an online recruitment and applicant tracking platform for schools, colleges, and multi‑academy trusts. Enables education employers to advertise vacancies, manage applications,…
Serves schools, colleges and multi-academy trusts recruiting education staff, alongside candidates seeking teaching and support roles in education.
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StrongStrong · Growing, Hiring · 48% CAGR over 4y
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Computed from 5 filingsOperates flexible workspace centres offering serviced offices, coworking desks, meeting rooms, event spaces and virtual office services. Provides short‑term office space, business addresses, and…
Serves businesses, solopreneurs and teams seeking flexible workspace in Northern England and Scotland, from freelancers using coworking or virtual offices to larger brands needing offices, meeting…
Financial Health
StrongStrong · Growing, Hiring · 82% CAGR over 4y
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Computed from 4 filingsProvides IT consultancy and managed services focused on Microsoft technologies. Designs, implements and supports cloud solutions including Microsoft 365, Azure and Power Platform, along with managed…
Serves businesses of all sizes seeking Microsoft cloud, security and managed IT support, including organisations adopting M365, Azure, Power Platform and Teams.
Financial Health
StrongStrong · Growing, Hiring · 10% CAGR over 4y
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Computed from 5 filingsProvides recruitment and staffing services, supplying temporary and permanent professionals including doctors, nurses, allied health staff, social care workers, educators, and administrative…
Serves public and private sector employers across the UK needing temporary and permanent staff, especially healthcare, social care, education, administration, construction and hospitality…
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Computed from 5 filingsProvides software development and IT consulting services, including cloud migration, enterprise application development, and systems integration. Builds case management systems, self‑service portals,…
Sells to businesses undergoing digital transformation, particularly organisations in housing, NHS and healthcare. Targets decision-makers needing software, cloud, case management, Microsoft…
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StrongStrong · Growing, Hiring · 37% CAGR over 4y
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Computed from 5 filingsProvides accounting software combined with accountant support for small businesses. Platform automates bookkeeping, categorises transactions, generates financial insights, manages invoices and…
Sells to UK small business owners needing accounting, bookkeeping and tax support. Targets business customers that want an all-in-one finance solution, including firms switching from another…
Financial Health
StrongStrong · Growing, Hiring · 81% CAGR over 4y
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Computed from 5 filingsProvides digital marketing services for small and medium-sized businesses, including search engine optimisation (SEO), pay‑per‑click advertising, social media advertising, eCommerce marketing,…
Serves SMEs worldwide, especially eCommerce brands and lead-generation businesses, including companies with local customer bases and online sellers using marketplaces such as Amazon.
Financial Health
StableStable · Hiring · 10% CAGR over 4y
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Computed from 5 filingsProvides business telecommunications and IT services including VoIP phone systems, business mobiles, broadband and Wi‑Fi, call recording and management software, computer telephony integration, and…
Serves UK businesses, particularly SMEs and multi-site operators in dental, hospitality, medical, veterinary, care homes, opticians, hotels, estate agencies and nurseries.
Financial Health
StrongStrong · Growing, Hiring · 7% CAGR over 4y
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Computed from 5 filingsDevelops digital asset management and proposal management software for architecture, engineering and construction firms. The platform organizes project images and marketing assets, and provides AI…
Serves B2B marketing, proposal and submissions teams at architecture, engineering and construction firms, from small engineering practices to larger contractors and design consultancies.
Financial Health
StrongStrong · Hiring · 9% CAGR over 5y
Location
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Computed from 5 filingsProvides flexible funding products for small and medium-sized businesses, including revolving credit facilities and debt consolidation lines. Offers tools and resources such as performance…
Serves UK SMEs and founders of growing businesses, with partner channels and introducers also addressed for referrals and business support.
Financial Health
StrongStrong · Growing, Hiring · 43% CAGR over 4y
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Computed from 5 filingsProvides private client wealth management and financial planning services, including investment planning, retirement planning, protection and legacy planning, mortgages and banking advice, and…
Serves private clients and families across the UK, particularly people with wealth, retirement, investment and legacy planning needs, alongside business owners and employers seeking corporate…
Financial Health
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Computed from 5 filingsProvides visiting and live-in homecare services for people needing support at home, including personal care, companionship, dementia and stroke care, respite and post-hospital support, assisting with…
Serves private individuals and families across the UK arranging care for older adults or people needing support at home, including those with dementia, post-hospital, stroke, respite or complex care…
Financial Health
StrongStrong · Growing, Hiring · 7% CAGR over 4y
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Computed from 3 filingsProvides recruitment services for businesses and job seekers, placing candidates in permanent and temporary roles across commercial, events, hospitality, and industrial sectors. Sources, screens, and…
Serves employers recruiting commercial, events and industrial staff, plus jobseekers seeking permanent, part-time, seasonal and flexible roles across the South, London and Greater Manchester.
Financial Health
StableStable · Hiring · 28% CAGR over 2y
Location
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Financial sub-scores
Computed from 5 filingsProvides managed IT services, technical support and cybersecurity for businesses. Services include Microsoft 365 and Azure management, cloud migration, backup and disaster recovery, network…
Serves businesses and public sector organisations, particularly charities, third sector bodies, hospitality and private members clubs, retailers, and professional services firms.
Financial Health
StrongStrong · Growing, Hiring · 10% CAGR over 4y
Location
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Computed from 3 filingsProvides workforce recruitment and staffing services, including permanent and temporary placements, managed workforce solutions, and background checks. Supplies staff for sectors such as aviation,…
Serves B2B employers and HR teams in aviation, hospitality, rail, security, warehousing and logistics, including major brands needing permanent, temporary or managed workforce support.
Financial Health
StrongStrong · -5% CAGR over 2y
Location
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How Calendly 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.
Calendly is a trademark of its respective owner. Firmbase is not affiliated with, sponsored by, or endorsed by the trademark owner.
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Companies using Calendly by city
Frequently asked questions
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