Companies Using Elfsight in London: 552 Active Firms (2026)
London companies running embedded website widgets add reviews, feeds, forms or chat features to public sites for customers and prospects.
For London adopters, embedded widget use usually sits with marketing, web operations or owner-managed commercial teams rather than a central software-buying function. The widgets add visible trust and enquiry features to public sites, so adoption tends to signal a customer-facing website with conversion targets, review management or service-led lead capture. The median company in this cohort has 6 employees and about £508k in turnover, pointing to small commercial teams using configurable front-end components rather than lengthy enterprise implementation programmes. Sector exposure is weighted towards field services and trades, property, construction, travel and hospitality, and education providers.
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London adoption covers 552 trading companies running embedded website widgets on public sites. The revenue profile is tilted towards small businesses but not exclusively: 34 companies are over £5M turnover, while 36 have been incorporated since 2022. Reported headcount totals 1,712, so the employment footprint is visible but fairly distributed across smaller teams rather than a narrow set of very large employers. Their surrounding website stacks usually include analytics, tag management, content management, security and anti-spam tooling, which suggests the widgets sit inside marketing-operated websites rather than isolated brochureware.
Third-party widgets create compliance questions because they can set cookies, capture enquiry details, embed chat transcripts or access device information. ICO guidance under UK GDPR, the Data Protection Act 2018 and PECR requires organisations to tell visitors when cookies or similar technologies are used, explain their purpose and obtain consent unless the access is strictly necessary for a requested online service. Consumer-facing sites also need to keep sales journeys and review displays aligned with the Consumer Rights Act 2015, Consumer Contracts Regulations 2013, Consumer Protection from Unfair Trading Regulations 2008 and the E-Commerce Regulations.
Adoption appears likely to be shaped by consent management, website governance and the pull of bundled website platforms rather than demand for single-purpose widgets alone. Smaller service businesses tend to value quick deployment and visible trust signals, while more mature marketing teams are more likely to rationalise scripts, reduce duplication and keep fewer external components on customer journeys. That creates a mixed path: continued use where widgets are easy to govern, but some consolidation where agencies, content-management platforms and marketing-operations teams fold the same functions into fewer moving parts.
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 Elfsight rises with company size across the trading companies in this cohort. 0.1% of the 532,485 companies with under 10 employees run Elfsight (381 detected). 1% of the 15,364 companies with 10–50 employees run Elfsight (160 detected). 1% of the 1,763 companies with over 50 employees run Elfsight (18 detected). That is a 0.9% gap between the over 50 employees and under 10 employees bands.
552
Active firms
2026
34
Above £5M turnover
Trading firms
6
Median headcount
Filed accounts
1,135
Verified directors
Across this cohort
Top companies using Elfsight 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 residential estate agency services including property sales, lettings, and property management. Markets homes for sale and rent, conducts valuations, and supports buyers, sellers, landlords,…
Serves homeowners, property buyers, landlords, tenants and property developers in the Sydenham and Eltham areas, across residential sales, lettings, land and new homes.
Financial Health
StrongStrong · Hiring · 7% CAGR over 4y
Location
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Financial sub-scores
Computed from 5 filingsOperates an online reservation platform for a network of independently owned boutique luxury hotels worldwide. Provides hotel booking services through its website and app, and manages a membership…
Serves affluent leisure travellers booking boutique luxury hotels worldwide, as well as travel agents and independent luxury hotels seeking access to its reservations and membership network.
Financial Health
HealthyHealthy · -69% CAGR over 4y
Location
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Computed from 5 filingsOperates digital platforms and group purchasing programmes that connect households with vetted suppliers of sustainable energy products, including solar panels, heat pumps, batteries and renewable…
Serves local governments/councils and vetted sustainable-energy installers/suppliers, with household residents as end users, especially homeowners seeking solar panels, batteries, heat pumps and…
Financial Health
HealthyHealthy · Hiring · 17% CAGR over 4y
Location
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Computed from 4 filingsProvides residential estate agency services including property sales, lettings, tenant placement, and property management. Also offers property valuations and coordinates maintenance and repair…
Serves residential property landlords, tenants, sellers and buyers in London, including flat owners and individuals looking to rent or purchase homes.
Financial Health
StrongStrong · Growing, Hiring · 44% CAGR over 3y
Location
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Computed from 5 filingsOperates dental clinics providing general and specialist dentistry, including check‑ups, hygiene and cleaning, teeth whitening, clear braces and smile alignment, dental implants, oral surgery,…
Serves private dental patients in Waterloo and London SE1, including adults seeking routine, cosmetic and specialist dental care, with Mandarin-speaking services also indicated.
Financial Health
StrongStrong · Growing, Hiring · 23% CAGR over 5y
Location
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Computed from 5 filingsOperates a group of hotels providing short‑stay accommodation for travellers. Offers guest rooms, concierge and reception services, Wi‑Fi, dining options, and meeting spaces, and manages multiple…
Serves leisure and business travellers visiting central London, including tourists, guests on short city stays, and professionals needing centrally located accommodation and small meeting spaces.
Financial Health
HealthyHealthy · Growing, Hiring · 3% CAGR over 4y
Location
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Computed from 4 filingsProvides furnished, all‑inclusive apartment accommodation for students and visiting families. Offers short‑ and medium‑term rentals with utilities, housekeeping and concierge services, and manages…
Serves students, their families and visiting professionals seeking premium all-inclusive private stays near universities in London and other major UK, European and US cities, including group bookings.
Financial Health
StrongStrong · Growing, Hiring · 54% CAGR over 3y
Location
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Computed from 4 filingsOperates a group of city-centre hotels offering short-stay accommodation in London, Liverpool and Edinburgh. Provides guest rooms and suites with in-room mini‑kitchens, booking services, membership…
Serves leisure travellers, couples, families and city-break visitors seeking stays in central London, Liverpool and Edinburgh, including repeat guests joining its direct-booking member club.
Financial Health
HealthyHealthy · Hiring · 5% CAGR over 4y
Location
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Computed from 3 filingsProvides residential estate agency services including property sales, lettings, tenant finding and property management. Offers property valuations, marketing of homes, and support for buyers,…
Sells to homeowners, property sellers, landlords, tenants, buyers and renters in East London, particularly around Walthamstow, Leytonstone, Leyton, Highams Park and Chingford.
Financial Health
HealthyHealthy · Hiring · 15% CAGR over 2y
Location
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Computed from 5 filingsOperates a website that lists live entertainment events and theatre productions, allowing users to browse shows by venue or city and book tickets for performances at theatres, concert halls, and…
Serves consumers and live-event audiences looking for theatre, concert and touring show tickets, mainly at venues across the UK and Ireland, with some European dates.
Financial Health
StrongStrong
Location
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Computed from 5 filingsOperates a hotel providing short‑stay accommodation with single, double and deluxe rooms. Offers en‑suite bathrooms, Wi‑Fi, televisions, and guest amenities, with online room information, booking…
Serves leisure and business travellers visiting central London, especially Eurostar and rail passengers using King’s Cross/St Pancras, UCL visitors, and tourists seeking accommodation near local…
Financial Health
HealthyHealthy · Hiring · 9% CAGR over 4y
Location
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Computed from 4 filingsProvides digital identity verification and electronic signature authentication software for businesses. Platform supports remote ID checks, liveness and document validation, KYC/KYB and AML…
Serves businesses, especially regulated firms, that need remote customer onboarding, due diligence, e-signature authentication and KYC/KYB/AML compliance for individuals and organisations.
Financial Health
StrongStrong
Location
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Computed from 5 filingsProvides group Pilates classes using reformer machines and other equipment at dedicated fitness studios. Offers scheduled sessions, introductory packages and class bookings through online timetables…
Serves individual consumers in Fulham, South Kensington, Wandsworth and Wimbledon seeking group Reformer Pilates fitness classes, including beginners and people focused on strength, mobility, back…
Financial Health
StrongStrong · Growing, Hiring · 41% CAGR over 4y
Location
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Computed from 4 filingsProvides recruitment and staffing services for schools, supplying teachers, teaching assistants, early years practitioners, and education support staff for temporary, long‑term, and permanent roles.…
Serves primary, secondary and early years schools in London and Hertfordshire, alongside teachers, teaching assistants, support staff and education leaders seeking school-based roles.
Financial Health
StrongStrong · Hiring · 20% CAGR over 3y
Location
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Computed from 5 filingsRetailer of used cars through an online and physical showroom. Offers vehicle sourcing, part‑exchange and car purchasing, and arranges hire purchase finance through partner lenders. Also provides…
Sells to private motorists seeking used cars, part exchange and vehicle finance, primarily in London and Greater London, including buyers across varied budgets and credit profiles.
Financial Health
StrongStrong · Growing, Hiring · 22% CAGR over 4y
Location
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Computed from 5 filingsManufactures bespoke timber windows and doors, including sash, casement and French doors. Provides design, joinery fabrication and installation services, with options such as double glazing, draught…
Serves London homeowners renovating or maintaining modern and period properties, especially Georgian, Victorian and Edwardian homes, including those in conservation areas.
Financial Health
StrongStrong · Growing, Hiring · 11% CAGR over 4y
Location
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Computed from 5 filingsOperates a golf driving range and activity centre featuring multiple bays with ball‑tracking technology, indoor golf simulators, short‑game practice areas and themed adventure golf. Offers bay…
Serves local consumers in Barnet, North London and Harrow, including golfers of all levels, non-members, families with children aged 3+, and visitors seeking golf or adventure-golf leisure activities.
Financial Health
StrongStrong · Hiring · 43% CAGR over 5y
Location
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Computed from 5 filingsProvides residential estate agency services, including property sales, lettings, and valuations. Assists buyers, sellers, landlords, and tenants with marketing homes, property searches, tenant…
Serves residential property buyers, sellers, landlords and tenants in London, with listings concentrated in areas such as Leyton, Leytonstone, Stratford, Hackney, Walthamstow and nearby postcodes.
Financial Health
HealthyHealthy · Hiring · 13% CAGR over 4y
Location
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Computed from 3 filingsProvides a venue finding service for event organisers, sourcing and recommending venues for meetings, conferences, parties, exhibitions and corporate events. Collects event requirements and matches…
Serves event organisers, corporate teams and private clients seeking London venues for conferences, meetings, parties, exhibitions, product launches, dining and seasonal events.
Financial Health
StrongStrong · Hiring · 18% CAGR over 2y
Location
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Computed from 5 filingsOperates a used car dealership selling pre-owned vehicles through an online showroom and forecourt. Offers vehicle part exchange and car buying, finance options including halal finance, and arranges…
Serves private motorists in London and Middlesex seeking used cars, car finance, part exchange, vehicle sales, and related MOT, servicing and repair enquiries.
Financial Health
StrongStrong · Growing, Hiring · 38% CAGR over 5y
Location
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Computed from 5 filingsProvides residential property brokerage and management services including property sales, lettings, investment advisory, and marketing of new‑build developments, listing apartments and homes for…
Serves private property buyers, sellers, landlords, tenants and investors seeking residential apartments, family homes and new developments in London and surrounding areas.
Financial Health
StrongStrong · Growing, Hiring · 7% CAGR over 4y
Location
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Computed from 5 filingsProvides residential estate agency services including property sales, lettings, and property management. Also offers property valuations, mortgage advice, investment and portfolio management,…
Serves residential property buyers, sellers, landlords and tenants across London and Essex, including homeowners seeking valuations, renters, private landlords and property investors.
Financial Health
StrongStrong
Location
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Computed from 5 filingsOperates a hotel providing guest accommodation alongside a restaurant and bar. Offers room bookings, dining, meeting and event spaces, and hot‑desking or workspace facilities for visitors and…
Serves hotel guests booking rooms directly by website, email or phone, along with diners and users of meeting, hot-desking and bar facilities. Targets consumers and business travellers visiting…
Financial Health
StableStable · -66% CAGR over 4y
Location
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Computed from 5 filingsProvides an online investment platform offering access to professionally managed portfolios, funds and ETFs through financial advisers. Enables individuals and institutions to open accounts, allocate…
Serves individual investors, independent financial advisers and institutions, with account access typically arranged through advisers. Targets clients looking to invest globally via online portfolios…
Financial Health
StrongStrong · Hiring · 26% CAGR over 4y
Location
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Computed from 5 filingsProvides linen and towel rental, cleaning, and supply of toiletries and consumables for short‑let and serviced apartment operators. Offers scheduled delivery, collection, and property turnover…
Serves Airbnb and short-let hosts, property management agencies, serviced apartment operators, holiday home owners and hotels in London, major UK cities and Dublin.
Financial Health
StrongStrong · Growing, Hiring · 41% CAGR over 4y
Location
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Computed from 5 filingsProvides in-home care services for adults, including live-in and visiting care. Supports people with conditions such as dementia, Parkinson’s disease, stroke, cancer, and disabilities, assisting with…
Serves older people and younger adults with health conditions or disabilities who need visiting or live-in care at home, plus families arranging care, mainly in London, Hertfordshire and Barnet.
Financial Health
StrongStrong · Hiring · 11% CAGR over 4y
Location
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Computed from 5 filingsOperates an outpatient gynaecology and fertility clinic providing fertility assessments and treatments including IVF, ICSI, IUI, egg freezing, ovulation induction, genetic testing, and donor…
Serves private patients in London seeking fertility and gynaecology support, including couples, single women, LGBTQ+ families, people preserving fertility, and patients with male or female…
Financial Health
HealthyHealthy · Hiring · 21% CAGR over 4y
Location
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Computed from 5 filingsProvides residential design and construction services including home extensions, loft and basement conversions, renovations, and new-build houses. Offers architectural planning, interior design, and…
Serves private homeowners in London and the Home Counties seeking high-end residential construction, renovations, extensions, loft and basement conversions, and design-and-build support.
Financial Health
StrongStrong · Growing, Hiring · 11% CAGR over 4y
Location
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Computed from 2 filingsOperates a Turkish restaurant serving grilled meats, kebabs, meze, salads and desserts. Provides dine-in and takeaway meals based on Turkish and Mediterranean cuisine as part of the Gökyüzü…
Serves individual diners, families and groups looking for Turkish and Mediterranean restaurant meals at its London locations, including Green Lanes, Park Royal, Kentish Town, Walthamstow, Finchley…
Financial Health
StrongStrong · Growing, Hiring · 31% CAGR over 1y
Location
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Computed from 5 filingsProvides residential estate agency services including property sales, lettings, and property management. Markets homes for sale and rent, conducts valuations, supports buying and renting processes,…
Serves homeowners, landlords, property buyers and tenants in East London and West Essex, plus land and new homes clients in the residential property market.
Financial Health
StrongStrong · Growing, Hiring · 22% CAGR over 4y
Location
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Computed from 5 filingsProvides B2B lead generation services for software and hardware vendors, using content syndication, email and web campaigns to reach technology decision‑makers. Manages campaign planning, copy…
Serves B2B software and hardware companies, particularly marketing teams seeking lead generation campaigns that reach business decision-makers across EMEA, APAC, LATAM and North America.
Financial Health
HealthyHealthy · -52% CAGR over 4y
Location
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Computed from 5 filingsOrganises and manages corporate events including meetings, conferences, networking events, social gatherings and seasonal parties. Provides event planning, coordination and access to a portfolio of…
Serves primarily corporate clients, selling to companies organising bespoke events for 20–500 attendees. Targets business decision-makers arranging meetings, conferences, networking events, staff…
Financial Health
HealthyHealthy · Hiring · 6% CAGR over 4y
Location
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Computed from 5 filingsProvides digital marketing and web development services including website design, branding, SEO, social media strategy, conversion optimisation, hosting and data security. Works with platforms such…
Serves businesses, associations, charities and startups worldwide, with a focus on finance and publishing organisations and clients needing ongoing, multi-project digital support.
Financial Health
HealthyHealthy · -10% CAGR over 4y
Location
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Computed from 5 filingsProvides creative content and digital media services for sports brands, broadcasters, sponsors and federations, including social media strategy and management, graphic and illustration design, video…
Serves B2B clients in the sports sector, including sports brands, broadcasters, sponsors and federations with social and digital media teams.
Financial Health
StrongStrong
Location
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Computed from 3 filingsSells, rents, installs and services mobility equipment including mobility scooters, powerchairs, stairlifts, wheelchairs, rise recliner chairs and walking aids. Also provides repairs, maintenance,…
Serves older and disabled consumers, carers and Motability Scheme users seeking mobility equipment for home and travel across Essex, London, Kent, Hertfordshire, Surrey and Sussex.
Financial Health
StrongStrong · Growing, Hiring · 15% CAGR over 2y
Location
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Computed from 5 filingsPublishes sports industry news, analysis and reports through its online media platform. Produces podcasts, newsletters and market research, and organises conferences and events, alongside…
Serves B2B professionals and decision makers across the international sports industry, including rights holders, broadcasters, sponsors, agencies, investors, technology providers and event organisers.
Financial Health
StrongStrong · Growing, Hiring · 8% CAGR over 4y
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Computed from 5 filingsSells business mobile phone contracts and SIM‑only plans from networks including EE, Vodafone, O2 and Three. Retailer of smartphones, tablets and accessories, and also offers mobile broadband,…
Serves UK business customers, from sole traders, startups and SMEs to larger teams, purchasing mobile connectivity and work devices for staff across major networks.
Financial Health
HealthyHealthy · -1% CAGR over 4y
Location
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Computed from 5 filingsProperty developer focused on residential housing projects. Plans, builds and sells new‑build homes and housing developments, designing sites, streets and landscaping and working with landowners and…
Sells to private homebuyers, including individuals, couples and families seeking new-build homes in community-focused residential developments.
Financial Health
StrongStrong
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Computed from 5 filingsOperates a bar and restaurant serving cocktails, food and brunch. Hosts supper clubs, DJ-led events and themed house‑party nights, and provides private dining rooms and venue hire for birthdays,…
Serves consumers in Fulham and London seeking late-night cocktails, dining, bottomless brunch, birthdays and group celebrations, plus private room or whole-venue hire for parties and dining events.
Financial Health
HealthyHealthy · Hiring · 9% CAGR over 4y
Location
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Computed from 5 filingsOperates a retail boutique and online shop selling designer women’s clothing and fashion accessories. Offers dresses, knitwear, jeans, coats, shoes, bags, and jewellery from multiple fashion brands…
Sells to UK consumers, primarily women shopping for designer womenswear, accessories, shoes, bags and jewellery through an online boutique and retail store.
Financial Health
StrongStrong · Hiring · 4% CAGR over 4y
Location
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Computed from 5 filingsProvides drainage and plumbing services including blocked drain clearance, high‑pressure water jetting, CCTV drain surveys, drain mapping, relining, repairs and installations. Offers emergency…
Serves homeowners, landlords and commercial property owners or managers in London and the Greater London/M25 area needing drainage support, including emergency call-outs and surveys.
Financial Health
StrongStrong · Growing, Hiring · 26% CAGR over 4y
Location
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Computed from 5 filingsProvides chauffeur-driven car hire services, including airport transfers, corporate roadshows, weddings, events and evening hire. Operates a fleet of luxury vehicles such as Rolls‑Royce, Bentley and…
Serves a mix of B2B and B2C clients, including corporate executives, business roadshow teams, private individuals, wedding parties, event attendees, and travellers using London airports.
Financial Health
HealthyHealthy · Hiring · 19% CAGR over 4y
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Computed from 5 filingsOperates café and restaurant venues serving Middle Eastern and Mediterranean‑inspired dishes, pastries and baked goods. Offers breakfast, dining and afternoon tea, as well as celebration cakes,…
Serves individual diners, families and groups in London, including customers seeking café meals, afternoon tea, celebration cakes, Ramadan iftar, gift vouchers, and private dining or venue hire for…
Financial Health
StrongStrong · Hiring · 19% CAGR over 4y
Location
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Computed from 3 filingsProvides B2B marketing services for technology companies, including inbound and outbound marketing campaigns, digital marketing, content creation, website design and development, and support for…
Serves B2B technology companies, targeting marketing leaders, demand generation, field marketing and partner/alliance teams that need agency support for campaigns across UK and EMEA markets.
Financial Health
StrongStrong · Hiring · 12% CAGR over 2y
Location
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Computed from 4 filingsSells tobacco‑free nicotine products including oral nicotine pouches, flavoured nicotine sticks and electronic heated devices. Operates an online shop offering product bundles, subscriptions and…
Sells direct to adult consumers, specifically existing smokers looking for tobacco-free nicotine and heated smoking alternatives, with repeat buyers supported through subscriptions and loyalty…
Financial Health
StrongStrong · -93% CAGR over 1y
Location
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Computed from 4 filingsProvides a no‑code software platform for document automation and lifecycle management, enabling businesses to create automated document templates, manage approvals and workflows, build custom…
Serves B2B and public-sector back-office teams, including legal, procurement, HR, finance, operations, sales and IT, across enterprise, midsize and early-stage organisations in sectors such as…
Financial Health
StrongStrong · Hiring · 26% CAGR over 3y
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Computed from 5 filingsProvides legal services across banking and finance, company and commercial law, dispute resolution, family law, immigration, intellectual property, real estate, and restructuring and insolvency,…
Serves a mix of corporate and private clients, including FTSE-rated companies, SMEs, property professionals, private developers, offshore investors and high-net-worth individuals.
Financial Health
StrongStrong · Hiring · 28% CAGR over 5y
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Computed from 5 filingsProvides membership-based concierge services arranging travel, luxury transport, private jet and chauffeur bookings, restaurant reservations, nightlife access, event tickets, holidays, and personal…
Targets high-net-worth private members, including professional athletes, entertainers, entrepreneurs and affluent consumers seeking luxury lifestyle, travel and entertainment access.
Financial Health
StrongStrong · Growing, Hiring · 19% CAGR over 4y
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Computed from 4 filingsProvides specialist ear, nose and throat (ENT) medical services with a focus on paediatric patients. Offers consultations, diagnostics and procedures including hearing tests, endoscopy, audiology…
Serves children and their families in the London region seeking private paediatric ENT care, plus adults needing general ENT, voice or ear consultations and audiology support.
Financial Health
StrongStrong · Hiring · 17% CAGR over 3y
Location
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Computed from 5 filingsOperates barbecue restaurants serving burgers, ribs, wings and other slow-cooked meats. Provides dine-in, takeaway and delivery services, and runs food trucks and pop-up stalls at festivals and…
Serves consumers dining in, collecting or ordering delivery from London restaurant sites, plus event organisers, wedding parties, brand teams and corporate clients booking catering for festivals,…
Financial Health
StrongStrong · Hiring · 10% CAGR over 4y
Location
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823 more companies and their verified directors are in the file
You’re seeing the top 50. Buy the list to get all 873 with directors, websites and financials.
Key facts
About 6% of the trading cohort reports turnover above £5M (34 of 552 firms) — the rest sits below that revenue band.
6% of the cohort was incorporated since 2022 (36 firms), so a sizeable share is in its first few filing cycles.
Among London users, 56.9% also run web analytics software and 45.7% also run tag-management software, pointing to websites built around measurement and campaign attribution.
A 44.9% share also uses a content-management system, while 40.9% sits behind traffic-filtering and delivery infrastructure.
Field Services & Trades is the largest sector tag at 15.2%, followed by Real Estate & Property at 11.8%, Construction at 10.9% and Travel & Hospitality at 10.1%.
ICO guidance requires organisations setting cookies or similar device-access technologies to explain what they do and obtain consent unless they are strictly necessary for a requested online service.
The UK Business Data Survey 2024 found that 68% of UK businesses had a website and 77% handled digitised data; among website-owning businesses that handled personal data, 9% used cookies to acquire personal data.
What else do Elfsight users run?
Share of the 552 Elfsight-running UK companies where each technology was also detected. As of June 2026.
Who runs Elfsight 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.
6
Median headcount
£508.3K
Median UK turnover
6.2%
Above £5M turnover
36
Incorporated since 2022
Verified directors — included in the file
Director names and roles for these 873 companies, alongside financials and websites, in one Excel + CSV file.
How Elfsight 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.
Elfsight is a trademark of its respective owner. Firmbase is not affiliated with, sponsored by, or endorsed by the trademark owner.
Elfsight elsewhere
Frequently asked questions
How many companies in London use Elfsight?
How is Elfsight usage detected?
What kinds of companies use Elfsight in London?
What do Elfsight users in London also run?
How fresh is this data?
Can I get contact details for these companies?
Buy all 873 companies as a spreadsheet.
One Excel/CSV file with company details, websites and key data — yours to download and use.