Companies Using CallRail in London: 51 Active Firms (2026)
Companies using call-tracking software attribute inbound phone enquiries to digital marketing activity across London.
Phone-led attribution usually sits with marketing, revenue operations and front-office managers rather than the IT department. Adoption signals a business where paid search, local SEO or social campaigns generate calls that sales or service teams must trace back to campaign spend. The London cohort skews towards healthcare providers, field services, construction, agencies, managed services and other lead-led businesses, with small and mid-market operators more visible than enterprise buyers. The stack tends to sit beside tag management, web analytics, form capture, anti-spam tools and content-management systems, suggesting practical marketing operations rather than experimental martech programmes.
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London adoption is small but commercially legible: 51 active companies are running call-tracking scripts on public websites, usually where inbound calls remain a measurable sales channel rather than a customer-service afterthought. Reported employment among those adopters totals 5,535 people, so the footprint is not confined to sole traders even though many operators appear to be small businesses. Healthcare providers and field-services trades account for much of the visible usage, with construction, agencies and managed-services firms forming a secondary layer. The common thread is local or vertical demand generation, where a missed attribution link can distort channel spend.
Call tracking sits between advertising technology, telecoms and personal-data handling, so governance is wider than campaign measurement. The ICO treats PECR as operating alongside UK GDPR and the Data Protection Act, with live marketing calls subject to both privacy and direct-marketing rules. People also have an absolute right to object to direct marketing, which matters when call recordings, caller IDs or attribution logs are retained for sales follow-up. Where UK telephone numbers are involved, Ofcom’s General Conditions shape numbering allocation and adoption by communications providers, even when the end user is simply buying marketing attribution capability from a vendor ecosystem.
Adoption appears likely to remain tied to paid-media discipline rather than broad software modernisation. Companies with phone-heavy sales motions tend to keep attribution tools when marketing teams can connect call quality to campaign spend, while lower-volume operators may fall back to basic web analytics and manual enquiry tracking. Privacy scrutiny is likely to favour clearer consent language, shorter retention practices and tighter access controls around recordings and caller metadata. The category may also be pulled into wider customer-journey and revenue-operations suites, leaving smaller adopters to weigh specialist call insight against bundle convenience.
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 CallRail rises with company size across the trading companies in this cohort. 0% of the 532,485 companies with under 10 employees run CallRail (30 detected). 0.1% of the 15,364 companies with 10–50 employees run CallRail (15 detected). 0.3% of the 1,763 companies with over 50 employees run CallRail (5 detected). That is a 0.3% gap between the over 50 employees and under 10 employees bands.
51
Active firms
2026
3
Above £5M turnover
Trading firms
8
Median headcount
Filed accounts
76
Verified directors
Across this cohort
Top companies using CallRail in London
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 filingsProvides fertility diagnosis and treatment services, including IVF and specialised assisted reproduction procedures. Offers fertility testing for women, men and couples, fertility preservation, and…
Serves private fertility patients in London, including individuals and couples struggling to conceive, people seeking fertility testing or preservation, and prospective parents considering donor or…
Financial Health
StableStable · Hiring · 10% CAGR over 4y
Location
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Computed from 5 filingsProvides dental services including dental implants, All‑on‑4 same‑day teeth, Invisalign orthodontics, cosmetic dentistry, veneers, composite bonding, and teeth whitening, alongside general dentistry…
Serves private dental patients in Colindale, Rochester and Medway, including adults seeking general, emergency, cosmetic, implant, orthodontic and facial aesthetics appointments.
Financial Health
HealthyHealthy · Growing · 0% CAGR over 5y
Location
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Computed from 5 filingsProvides damp and mould inspection and treatment services for residential buildings, including damp surveys, rising damp and condensation solutions, mould removal, damp proofing, basement…
Serves homeowners, landlords, property managers and buyers of London properties, especially owners of period, listed and heritage buildings with damp, mould or restoration concerns.
Financial Health
StableStable · -66% CAGR over 4y
Location
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Computed from 5 filingsProvides fertility diagnostics and treatments including IVF, IUI and egg freezing. Offers male and female fertility assessments, genetic testing, counselling, and services such as sperm and egg…
Serves private and NHS-referred fertility patients in the UK, including individuals, couples, LGBTQ+ and transgender patients, plus hospitals and health professionals referring fertility and…
Financial Health
HealthyHealthy · Profitable, Hiring · 18% CAGR over 4y
Location
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Computed from 5 filingsProvides pest control services for domestic and commercial properties, including inspection, eradication and prevention of rodents, insects and birds. Offers treatments such as fumigation, heat…
Serves businesses and households across London, including restaurants, hotels, offices, schools, construction sites, warehouses, property managers, museums, tourist attractions and domestic property…
Financial Health
StableStable · 0% CAGR over 4y
Location
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Computed from 2 filingsProvides cosmetic and plastic surgery procedures including breast augmentation, reduction and uplift, tummy tuck, liposuction, facelifts, rhinoplasty and body contouring, alongside non‑surgical…
Serves private consumers seeking cosmetic and plastic surgery care, primarily women and men with body, breast, facial or post-pregnancy concerns, with locations highlighted in London and Cairo.
Financial Health
StrongStrong
Location
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Computed from 3 filingsProvides physiotherapy and sports injury treatment through clinics and home or online appointments. Services include rehabilitation, diagnostic ultrasound, ultrasound‑guided injections, sports…
Serves private patients across Central London, including adults and children with sports injuries, back pain, post-operative rehabilitation needs, tendon or muscle problems, podiatry/biomechanics…
Financial Health
HealthyHealthy · Hiring · 13% CAGR over 2y
Location
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Computed from 4 filingsProvides residential and commercial cleaning services including regular home cleaning, deep cleans, Airbnb/short‑stay turnover, carpet, upholstery, mattress and window cleaning, gutter cleaning, and…
Serves busy professionals, families and homeowners across South West London, plus Airbnb and short-let hosts, small offices, schools, nurseries and residential blocks needing regular or one-off…
Financial Health
StableStable · Hiring · 4% CAGR over 3y
Location
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Computed from 5 filingsProvides electrical contracting services for residential and commercial properties, including installations, rewiring, fuse box upgrades, lighting installation, electrical inspections (EICR and PAT…
Serves homeowners and commercial organisations of all sizes in Fulham, Chelsea, Kensington and wider West London, including residential property owners and businesses needing planned, emergency and…
Financial Health
WeakWeak · Hiring · 41% CAGR over 4y
Location
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Computed from 5 filingsProvides dental and aesthetic treatments including general dentistry, hygienist care, teeth whitening, veneers, Invisalign, implants, crowns and fillings, alongside skincare and cosmetic procedures…
Serves private individuals and families seeking dental, aesthetic and wellbeing care, including new patients, anxious patients and children, primarily from Earlsfield, Wimbledon, Putney, Wandsworth…
Financial Health
WeakWeak · Hiring · 11% CAGR over 4y
Location
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Computed from 3 filingsProvides residential estate agency services including property sales, lettings, and property management. Markets homes for sale and rent, lists properties for owners, and supports buyers, tenants,…
Serves residential property sellers, buyers, landlords and tenants in Richmond, Putney, Twickenham, Sheen, Mortlake and nearby South West/West London areas.
Financial Health
DistressedDistressed · 0% CAGR over 2y
Location
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Computed from 5 filingsProvides skip hire and waste management services, supplying skips in multiple sizes and roll‑on/roll‑off containers for domestic, commercial and construction waste. Also offers rubbish removal, skip…
Serves homeowners, construction firms, retail outlets, schools and industrial customers needing skip hire and waste management across Greater London and Essex.
Financial Health
StableStable · Hiring · 37% CAGR over 4y
Location
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Computed from 5 filingsOperates residential care homes providing accommodation, personal care and support for older adults, including dementia care and short‑stay respite services. Facilities offer daily living assistance,…
Serves older adults and their families seeking residential, dementia or short-stay care, primarily through private care homes. Targets individuals needing later-life support and relatives involved in…
Financial Health
StrongStrong · Hiring · 32% CAGR over 4y
Location
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Computed from 5 filingsProvides PCO‑licensed vehicle hire and rent‑to‑own schemes for private hire drivers working with ride‑hailing platforms. Offers weekly rentals of electric and hybrid cars with insurance, servicing…
Serves individual private-hire and PCO drivers in London, including Uber, Bolt and FreeNow drivers, plus new drivers applying for TfL licences who need compliant vehicles on flexible terms.
Financial Health
StrongStrong · Hiring · 12% CAGR over 4y
Location
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Computed from 5 filingsDesigns and installs bespoke kitchens, bathrooms and bedrooms for residential interiors. Provides interior design services, supplies cabinetry, wardrobes and appliances, and manages projects from…
Serves homeowners and private residential clients in Hammersmith and West London seeking bespoke kitchen, bathroom, bedroom and interior projects for their homes.
Financial Health
StrongStrong · Growing, Hiring · 26% CAGR over 4y
Location
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Computed from 5 filingsProvides vehicle servicing, diagnostics, repairs and maintenance for Volkswagen Group vehicles including Audi, Volkswagen, SEAT, Skoda and VW commercial vans. Offers cambelt replacements, electric…
Serves private motorists and commercial vehicle owners with Volkswagen, Audi, SEAT, Skoda and VW Commercial vehicles, including car, van, electric and hybrid owners in the Sutton/South London area.
Financial Health
StrongStrong · Growing, Hiring · 3% CAGR over 5y
Location
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Computed from 3 filingsProvides residential and commercial removals services, transporting household and office contents using transit and Luton vans. Offers packing services, furniture dismantling and reassembly, and…
Serves households, flat and house movers, and businesses needing office moves in London and beyond, including customers moving single rooms, flats, houses, offices and national relocations.
Financial Health
StrongStrong · Hiring · 18% CAGR over 2y
Location
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Computed from 4 filingsProvides architectural design and planning services for residential extensions, new-build developments and refurbishments, and undertakes projects across private homes, housing, education, community…
Serves private homeowners, housing developers, schools, community organisations and commercial clients seeking architectural services in London, Surrey and the South East.
Financial Health
StableStable · 2% CAGR over 3y
Location
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Computed from 5 filingsProvides serviced and managed office spaces in converted period and commercial properties, offering private offices, virtual offices and meeting rooms. Also offers workspace design consultancy and…
Serves businesses of all sizes seeking managed, serviced or virtual office space in prime central London, from startups taking their first flexible office to larger corporates needing private…
Financial Health
WeakWeak · -74% CAGR over 5y
Location
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Computed from 5 filingsProvides barrister-led legal advice and representation in commercial and civil disputes, including construction, property, planning, company and insolvency matters. Offers advocacy, contract…
Serves businesses, professionals and high-net-worth individuals across the UK, including direct-access clients in commercial, construction, property, planning, insolvency, private client, sports,…
Financial Health
WeakWeak · Hiring · 35% CAGR over 4y
Location
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Computed from 5 filingsProvides private obstetric and gynaecology services, including antenatal care, pregnancy monitoring, prenatal screening and delivery arrangements, as well as diagnosis and treatment for conditions…
Serves private maternity and gynaecology patients, particularly pregnant women and prospective parents seeking antenatal care, delivery support and women’s health services through private hospitals…
Financial Health
StableStable · -68% CAGR over 4y
Location
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Computed from 5 filingsProvides digital marketing services including pay‑per‑click advertising management, search engine optimisation, social media marketing, content creation, website design and development, email…
Serves UK businesses, especially small and medium-sized companies and fast-growing firms seeking lead generation. Targets buyers wanting digital marketing support, including local and national…
Financial Health
WeakWeak · Hiring · 19% CAGR over 4y
Location
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Computed from 5 filingsProvides international and domestic removal services for individuals and businesses, including packing, transport and shipping of household goods, corporate employee relocation management, storage,…
Serves individuals and households moving within the UK or overseas, alongside businesses and HR/employer teams relocating employees for projects, assignments, or corporate moves.
Financial Health
StableStable · Hiring · 2% CAGR over 4y
Location
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Computed from 5 filingsProvides design, installation and maintenance of commercial CCTV and integrated security systems. Services include wireless and thermal cameras, remote site monitoring, ANPR, intruder and fire…
Serves commercial organisations with large sites, including education providers, luxury retail boutiques, prestige buildings, hospitality venues and sporting brands across London and the UK.
Financial Health
HealthyHealthy · Hiring · 4% CAGR over 4y
Location
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Computed from 4 filingsOperates an education recruitment agency connecting schools with teachers, teaching assistants and special educational needs staff. Provides supply and permanent staffing, candidate screening, CV…
Serves primary and SEN/SEND schools across London and beyond, plus teachers, teaching assistants, supply teachers, ECTs, overseas-trained teachers and other education jobseekers seeking UK school…
Financial Health
StableStable · -57% CAGR over 3y
Location
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Computed from 5 filingsProvides domiciliary and live-in home care services for individuals requiring support with daily living. Assesses care needs, develops personalised care plans, and places trained carers to deliver…
Serves private individuals and families seeking live-in or visiting home care for older adults or people needing daily support in their own homes, with services positioned nationwide.
Financial Health
WeakWeak · -17% CAGR over 4y
Location
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Computed from 4 filingsProvides architectural and interior design services for residential, cultural, hospitality, education and commercial projects. Designs new-build homes, extensions, renovations and developer schemes,…
Serves private homeowners investing £200k–£5m, residential developers, and organisations in culture, education, hospitality and commercial sectors, with an emphasis on London projects.
Financial Health
DistressedDistressed · -14% CAGR over 3y
Location
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Computed from 3 filingsProvides physiotherapist-led Pilates instruction through one-to-one and small group classes, including equipment-based and reformer Pilates. Offers programmes for injury rehabilitation, pregnancy and…
Serves individual consumers in London and online, including beginners, people recovering from injury or surgery, pre- and postnatal clients, cancer rehabilitation clients, and those managing pain or…
Financial Health
StrongStrong · -3% CAGR over 2y
Location
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Computed from 5 filingsProvides live-in and visiting home care services for people needing support at home, including dementia care, personal care, companionship, respite and palliative care. Services include matching…
Serves private individuals and families seeking live-in or visiting home care, especially older adults and people needing dementia, personal, companionship, respite or palliative support across the…
Financial Health
WeakWeak · Hiring · 7% CAGR over 4y
Location
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Computed from 5 filingsProvides digital marketing services including search engine optimisation (SEO), pay‑per‑click advertising management, conversion rate optimisation, website design and development, content creation,…
Serves UK businesses and charities seeking outsourced growth marketing, with specific pages for architects, healthcare providers, and organisations needing SEO, PPC, CRO, website design, or lead…
Financial Health
StrongStrong · 0% CAGR over 2y
Location
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Computed from 5 filingsProvides managed IT services including technical support for networks, servers and computers, cybersecurity protection, cloud migration and management, and technology consulting. Monitors systems,…
Serves small-to-medium businesses in London, selling to owners, executives and teams that need outsourced IT, cybersecurity and cloud support.
Financial Health
StrongStrong · Growing, Hiring · 48% CAGR over 4y
Location
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Computed from 5 filingsProvides chartered accountancy and auditing services including bookkeeping, VAT, payroll, management accounts, tax planning, company formation, and business advisory support for startups, companies,…
Serves corporate and private clients, including startups, owner-managed and growing businesses, self-employed people, individuals with tax affairs, and academy schools or trustees.
Financial Health
HealthyHealthy · -3% CAGR over 4y
Location
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Computed from 5 filingsProvides live-in and visiting home care services, supplying carers who assist individuals with personal care, daily living activities, companionship, and support to help people remain independent…
Serves private individuals and families seeking live-in or visiting home care, especially older adults and people needing support to remain independent at home across the south of England.
Financial Health
WeakWeak · -36% CAGR over 4y
Location
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Computed from 5 filingsProvides IT services focused on Microsoft Modern Workplace technologies, including Microsoft 365 and Teams implementation, SharePoint and OneDrive deployment, Azure migration and virtual desktop…
Serves B2B organisations seeking Microsoft workplace and collaboration support, with stated sector focus on retail, finance and insurance companies, including teams managing employees, contractors…
Financial Health
StrongStrong · Growing, Hiring · 19% CAGR over 4y
Location
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Computed from 4 filingsProvides security services including manned guarding, mobile patrols, CCTV monitoring and event stewarding. Also delivers contract cleaning and hygiene services, recruitment and temporary staffing,…
Serves businesses and public sector organisations, including retailers, shopping centres, local authorities, healthcare providers, warehouses, production sites, call centres, event venues and…
Financial Health
HealthyHealthy · Hiring · 82% CAGR over 3y
Location
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Computed from 5 filingsProvides air and water hygiene services for buildings, including ductwork and ventilation cleaning, kitchen extract and fire damper testing, Legionella risk assessment and testing, water tank…
Serves building and facilities managers in business, public sector and housing settings, including education, healthcare, food production, hospitality, retail, transport hubs, leisure venues, care…
Financial Health
StableStable · -16% CAGR over 5y
Location
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Computed from 5 filingsProvides domestic and international removals for households and businesses, including packing, transport, and relocation support. Also offers furniture, vehicle, and specialist storage, along with…
Serves private households moving within the UK or overseas, plus businesses needing commercial relocation or storage. Also targets owners of antiques, fine art and country estates, retailers, museums…
Financial Health
WeakWeak
Location
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Computed from 5 filingsProvides marketing consultancy and HubSpot implementation services, including CRM onboarding, RevOps consulting and managed support. Designs and develops websites and runs digital marketing campaigns…
Serves B2B scaling companies and enterprises using HubSpot, targeting leaders and teams across sales, marketing, customer success and RevOps.
Financial Health
DistressedDistressed · -7% CAGR over 5y
Location
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38 more companies and their verified directors are in the file
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Key facts
About 5% of the trading cohort reports turnover above £5M (3 of 51 firms) — the rest sits below that revenue band.
3% of the cohort was incorporated since 2022 (2 firms), so a sizeable share is in its first few filing cycles.
88.2% of the London call-tracking cohort also run tag-management tooling, and 54.9% also run web-analytics tooling.
Healthcare providers account for 31.4% of detected users, while field services and trades account for 19.6%.
UK digital advertising spend reached £40.5 billion in 2025, including £17.9 billion in search and £11.5 billion in social media.
ICO guidance says PECR sits alongside the UK GDPR and Data Protection Act 2018 for live marketing calls, with monetary penalties of up to £500,000 for PECR breaches.
76 verified directors are associated with the London cohort running this call-tracking technology.
What else do CallRail users run?
Share of the 51 CallRail-running UK companies where each technology was also detected. As of June 2026.
Who runs CallRail 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.
8
Median headcount
£571.1K
Median UK turnover
5.9%
Above £5M turnover
2
Incorporated since 2022
Verified directors — included in the file
Director names and roles for these 76 companies, alongside financials and websites, in one Excel + CSV file.
How CallRail 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.
CallRail is a trademark of its respective owner. Firmbase is not affiliated with, sponsored by, or endorsed by the trademark owner.
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Frequently asked questions
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