Companies Using Google Tag Manager in Reading: 496 Active Firms (2026)
Reading companies running tag-management tools coordinate website scripts, consent-dependent pixels and analytics tags across local and national online operations.
Marketing, analytics and web teams tend to own this stack, with legal and privacy input where consent banners, pixels and customer journeys meet. Companies running this tag-management technology usually have enough online acquisition to need version control for scripts rather than ad hoc edits by developers or an agency. Adoption points to a business with tracked campaigns, conversion goals and recurring changes to web measurement. The relevant buyer profile is therefore not just digital-first retail: it also includes B2B services, operational trades and manufacturers with quote forms, gated content or partner-led sales funnels.
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Reading has 496 active trading companies running this tag-management technology, making the local adoption picture broad rather than confined to digital-only businesses. Reported staffing totals 3,289 employees, which puts the stack inside employers as well as owner-managed firms. Sector overlap points to practical commercial websites: Field Services & Trades represents 12.3% of the cohort, Advanced Manufacturing 9.5%, Wholesale & Distribution 8.5%, Construction 8.5%, and IT Services & Managed Services 8.1%. That mix fits the behaviour implied by the technology: enquiry capture, paid-search measurement, remarketing controls and analytics governance across sites managed by internal marketers, agencies or both.
Compliance sits mainly in PECR and UK GDPR, with the ICO setting out how storage and access technologies should be explained to users. Consent generally needs to be obtained before non-essential tracking runs, and it needs to meet the UK GDPR standard unless a relevant exception applies. For companies running tag-management containers, the awkward point is operational rather than theoretical: third-party pixels, link decoration, device fingerprinting, web storage and scripts embedded in the online service remain the operator’s responsibility, even when an agency or external supplier configured the tag.
Adoption appears likely to become more controlled, not simply more widespread. Smaller Reading firms tend to inherit tags through agency-managed websites, then face clean-up work when consent tooling, analytics ownership or campaign reporting changes hands. Larger operators are more likely to move tagging decisions into shared governance between marketing, web, legal and analytics teams. Server-side tagging, tighter browser controls and bundled consent features may reduce the volume of casual client-side scripts, but they also raise the bar for documentation and audit trails. The practical direction is towards fewer unmanaged pixels and clearer accountability for who can publish changes.
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 Google Tag Manager rises with company size across the trading companies in this cohort. 1.6% of the 19,753 companies with under 10 employees run Google Tag Manager (318 detected). 19.5% of the 812 companies with 10–50 employees run Google Tag Manager (158 detected). 33.3% of the 72 companies with over 50 employees run Google Tag Manager (24 detected). That is a 31.7% gap between the over 50 employees and under 10 employees bands.
496
Active firms
2026
47
Above £5M turnover
Trading firms
6
Median headcount
Filed accounts
1,046
Verified directors
Across this cohort
Top companies using Google Tag Manager in Reading
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.
Provides digital marketing services for small and medium-sized businesses, including pay‑per‑click, display and social media advertising, website creation, video production and online reputation…
Sells to UK small and medium-sized businesses, especially local businesses across industries seeking managed digital marketing. Also serves consumers using its directory to find trusted local…
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Computed from 5 filingsProvides data analytics, technology platforms and consulting services for pharmaceutical, biotechnology and healthcare organisations, including clinical trial management, real‑world evidence data,…
Serves B2B and public-sector buyers across the life sciences and healthcare ecosystem, including pharmaceutical manufacturers, emerging biopharma, generics, MedTech, providers, payers, government…
Financial Health
StrongStrong · Hiring · 21% CAGR over 5y
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Computed from 3 filingsProvides a software-as-a-service platform for retailers to manage dropshipping and curated marketplace operations. Software connects retailers with suppliers, synchronises inventory, manages product…
Serves B2B retailers and ecommerce organisations, particularly supply chain, category, dropship and online trading teams managing large product ranges and supplier networks.
Financial Health
StrongStrong · Hiring · 33% CAGR over 2y
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Computed from 5 filingsOnline retailer of LED lighting products and components for domestic and commercial use, including LED bulbs, spotlights, tubes, panels, downlights and outdoor lighting. Also sells electrical…
Serves UK consumers, electricians and facilities or procurement teams in commercial and industrial settings, including education, warehouses, hospitality, food and beverage sites, cold storage,…
Financial Health
HealthyHealthy · Growing · 0% CAGR over 4y
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Computed from 4 filingsProvides a retail analytics platform that tracks online pricing, promotions, search visibility, product content, and retail media across retailers. Supplies daily data and insights to support pricing…
Serves consumer goods brands, suppliers and retailers worldwide, targeting commercial, sales, revenue, category insight, eCommerce, marketing and quality teams involved in retail performance.
Financial Health
StrongStrong · Growing, Hiring · 98% CAGR over 3y
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Computed from 5 filingsDevelops applications for the Salesforce platform that support data management, including spreadsheet data import tools, address verification and standardisation, phone screening against TPS/CTPS…
Sells to businesses and organisations using Salesforce, from small teams to large enterprises, across sectors including higher education, financial services and nonprofits, particularly teams…
Financial Health
StrongStrong · Growing, Hiring · 7% CAGR over 4y
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Computed from 3 filingsProvides serviced apartments for short and extended stays, offering one‑ to three‑bedroom furnished accommodation with kitchens, Wi‑Fi, housekeeping, and guest support. Operates multiple apartment…
Serves short- and longer-stay guests seeking serviced accommodation in central Reading and Berkshire, including business travellers, relocating professionals, families and other visitors wanting 1-…
Financial Health
StrongStrong · Growing, Hiring · 29% CAGR over 2y
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Computed from 5 filingsProvides a digital analytics platform that captures and analyses user interactions on websites and mobile apps. Offers session replay, product analytics, in‑app surveys, and AI‑driven insights to…
Serves B2B digital product, data, support, IT and marketing teams at retail/ecommerce, travel, gaming, SaaS, food and beverage, and financial services companies.
Financial Health
StrongStrong · Hiring · 91% CAGR over 4y
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Computed from 4 filingsDevelops software for enterprise service management and IT financial management, including tools for workflow automation, knowledge management, and cost and performance management. Also provides…
Serves large enterprises and service organizations, targeting CIOs, CFOs, IT, finance, HR and customer service leaders responsible for enterprise services, IT finance, performance management and…
Financial Health
HealthyHealthy · Hiring · 4% CAGR over 3y
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Computed from 5 filingsDesigns and develops websites and digital platforms using CMS and .NET technologies. Provides bespoke business software development, website upgrades, integrations, managed hosting on Microsoft…
Serves UK organisations, primarily in-house digital, marketing and IT teams needing a technical partner for enterprise websites, CMS/DXP platforms and bespoke business software.
Financial Health
HealthyHealthy · Growing, Hiring · 6% CAGR over 4y
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Computed from 5 filingsProvides digital advertising and performance marketing services, including pay‑per‑click campaign management, paid search, display and social media advertising, SEO, content marketing, and…
Serves B2B clients ranging from small businesses outside London to national companies and global organisations, typically marketing leaders or business owners seeking an external performance…
Financial Health
HealthyHealthy · -4% CAGR over 4y
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Computed from 4 filingsDevelops and supplies technology‑enabled care systems that use in‑home sensors to monitor activity such as movement, door use, temperature and routines, providing real‑time alerts and data to…
Serves care providers, health and social care organisations, and families or unpaid carers responsible for vulnerable adults living independently at home, including those managing community care and…
Financial Health
StrongStrong
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Computed from 4 filingsProvides direct mail marketing and mailing house services, including campaign design, printing and fulfilment, data supply and cleansing, lead generation, and distribution of letters, postcards,…
Serves UK businesses and organisations running mailed campaigns, including brands, membership bodies, education providers, public sector bodies, charities/NPOs, retailers, finance and health…
Financial Health
HealthyHealthy · 0% CAGR over 3y
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Computed from 5 filingsProvides hair loss assessment and treatment services for men and women, including FUE hair transplant procedures, laser therapy, and non‑surgical home treatments, with consultations and treatment…
Serves individual consumers, both men and women, seeking help with pattern baldness, receding hairlines, thinning hair, patches of hair loss or advanced hair loss, via London and Reading clinics.
Financial Health
HealthyHealthy · Hiring · 50% CAGR over 4y
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Computed from 5 filingsProvides recruitment technology and marketing services for staffing agencies, including recruitment website development, candidate sourcing tools, job multi-posting, candidate matching and CV search,…
Serves B2B recruitment agencies and staffing firms, including specialist recruiters seeking candidates through websites, job boards, CRMs and social channels.
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HealthyHealthy · Growing · 2% CAGR over 4y
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Computed from 5 filingsProvides receivables finance and asset-based lending to businesses, including invoice factoring, accounts receivable financing, inventory and acquisition financing, payroll funding, and supply chain…
Serves SMEs and high-growth businesses, especially in healthcare, staffing, consumer goods and transportation/trucking, plus companies facing seasonal, turnaround, acquisition or cash-flow pressures.
Financial Health
StrongStrong · Profitable, Growing, Hiring · 12% CAGR over 4y
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Computed from 3 filingsOperates an online platform that allows motorists to compare quotes and book vehicle maintenance and repair services, including MOTs, servicing and diagnostics, from a network of garages, dealerships…
Serves a two-sided UK market: drivers needing MOT, servicing and repair quotes, and garages, mobile mechanics and dealerships seeking repair and maintenance customers.
Financial Health
StrongStrong · Hiring · 26% CAGR over 2y
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Computed from 5 filingsProvides mortgage brokerage and advisory services, comparing products from multiple lenders for first-time buyers, home movers, remortgages and buy-to-let. Also arranges protection insurance…
Serves UK consumers and property investors, including first-time buyers, home movers, remortgagers and buy-to-let landlords, with emphasis on clients in Reading and nearby Thames Valley towns.
Financial Health
HealthyHealthy · Hiring · 26% CAGR over 4y
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Computed from 5 filingsSupplies temporary and permanent healthcare and home care staff to organisations including NHS trusts, private hospitals, nursing homes, local authorities and clinical commissioning groups. Recruits…
Serves UK healthcare and social care employers, including NHS Trusts, private hospitals, nursing homes, local authorities and Clinical Commissioning Groups, plus clinical and care professionals…
Financial Health
StrongStrong · Hiring · 31% CAGR over 5y
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Computed from 5 filingsDesigns, installs and maintains renewable energy systems including solar photovoltaic panels, battery storage and electric vehicle charging equipment for residential and commercial properties. Also…
Serves homeowners, business owners and public-sector/community organisations in the South of England, including agriculture, care homes, corporates, councils, data centres, facilities management,…
Financial Health
StrongStrong · Growing, Hiring · 11% CAGR over 5y
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Computed from 5 filingsProvides IT consultancy, managed IT support and cybersecurity services for businesses, including security audits, Cyber Essentials guidance and training. Supplies cloud computing, backup and disaster…
Serves UK SMEs and businesses across sectors, targeting organisations that need external IT teams, communications buyers, and managers responsible for systems, phone services, security and…
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StrongStrong · Hiring · 15% CAGR over 4y
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Computed from 5 filingsProvides subscription-based healthcare industry intelligence, including news, market analysis, reports, and databases on healthcare providers, investments, and deals. Operates an online platform and…
Serves B2B buyers in international healthcare services, including investors, operators, providers and advisory teams seeking market data on healthcare subsectors and regions.
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StrongStrong · Growing, Hiring · 20% CAGR over 5y
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Computed from 5 filingsProvides taxi and private hire transport services, including airport transfers, train station pickups, hotel and hospital journeys, and transport for events and concerts. Offers 24/7 bookings via…
Serves local residents, rail commuters, students, visitors, business travellers and corporate clients in and around Reading, including people travelling to airports, hotels, hospitals, pubs, concerts…
Financial Health
HealthyHealthy · -4% CAGR over 4y
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Computed from 3 filingsProvides IT consulting and software development services including product strategy validation, user experience innovation, data analytics and AI solutions, and product and platform engineering,…
Serves established enterprises and industry-leading brands with defined business goals, especially teams responsible for digital products, platforms, customer experience, data and AI initiatives.
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StrongStrong · Growing, Hiring · 12% CAGR over 2y
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Computed from 5 filingsOperates residential and dementia care homes providing accommodation, personal care and nursing support for older people. Services include assistance with daily living, wellbeing activities, and…
Serves older adults needing residential, nursing or dementia care, alongside families and referrers seeking care home placements for relatives or clients.
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StrongStrong · Hiring · 29% CAGR over 4y
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Computed from 5 filingsDevelops financial reconciliation software that automates matching and verification of transactions. The platform imports financial data, applies configurable matching rules, generates reports and…
Targets CFOs, finance managers and financial operations teams in B2B sectors including banking, fintech, asset management, insurance, gambling, hospitality and payments, from startups to large…
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StrongStrong · Growing, Hiring · 28% CAGR over 4y
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Computed from 5 filingsDevelops digital forensic software and platforms for extracting, analysing and managing data from mobile devices and cloud sources. Provides tools such as XRY and XAMN, along with training,…
Serves law enforcement, military, border control and corrections agencies, plus eDiscovery organisations, targeting forensic specialists, digital investigators, frontline personnel and programme or…
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StrongStrong · Growing, Hiring · 15% CAGR over 4y
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Computed from 5 filingsProvides business intelligence and data analytics services, including development of interactive dashboards, real-time data visualisation, enterprise reporting and forecasting tools to support…
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HealthyHealthy · Hiring · 22% CAGR over 4y
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Computed from 3 filingsProvides commissioning, qualification, and operational readiness consulting for life sciences and mission‑critical facilities. Services include facility and equipment readiness, quality and…
Serves B2B organisations in life sciences and mission-critical sectors, including facility owners, operators and project teams managing complex regulated or high-availability facilities worldwide.
Financial Health
HealthyHealthy · Hiring · 66% CAGR over 2y
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Computed from 5 filingsProvides private hire taxi services including local and long‑distance journeys, airport transfers, station pickups, and taxi tours. Offers 24/7 booking with a fleet of vehicles and licensed drivers…
Serves consumers and business travellers in Reading and surrounding towns, including airport passengers, rail station users, university travellers, local residents and visitors needing local or…
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HealthyHealthy · -4% CAGR over 4y
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Computed from 4 filingsSupplies medical diagnostic and monitoring equipment including ECG systems, cardiac stress testing, Holter monitoring, blood pressure and pulmonary function testing devices, defibrillators, and…
Serves healthcare providers and public-sector emergency services, including general practices, hospitals, paramedic and ambulance teams, plus organisations responsible for public-access emergency…
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StrongStrong · Hiring · 34% CAGR over 3y
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Computed from 5 filingsProvides recruitment and staffing services for food manufacturing, FMCG, engineering, logistics and supply chain sectors. Sources, screens and places candidates in temporary and permanent roles,…
Serves employers and jobseekers in food manufacturing, FMCG, engineering, logistics and UK supply chain operations, including businesses needing temporary staff and candidates seeking production,…
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HealthyHealthy · Hiring · 26% CAGR over 4y
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Computed from 5 filingsProvides IT consulting and digital transformation services, including CRM and ERP system design and implementation, managed IT support, website development, social media marketing, and business…
Serves businesses and organisations needing IT support and digital transformation, including operational teams in sectors such as shipping, logistics and professional services.
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StrongStrong · Hiring · 7% CAGR over 4y
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Computed from 3 filingsProvides motor vehicle body repair and accident damage services, including insurance and non‑fault repairs, paintwork, dent and scratch removal, and alloy wheel repairs. Offers estimates and payment…
Serves private motorists and vehicle owners in Reading, Berkshire and Central Oxfordshire, including customers needing insurance, non-fault or privately funded car body repairs, dents, scratches and…
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HealthyHealthy · Growing, Hiring · 6% CAGR over 2y
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Computed from 5 filingsProvides facilities management services for commercial properties, including office and commercial cleaning, deep and specialist cleaning, window and kitchen duct cleaning, security guarding,…
Serves UK businesses and institutions needing facilities management, including offices, retail and malls, hotels, warehouses and depots, construction sites, student accommodation, schools, higher…
Financial Health
StrongStrong · Hiring · 52% CAGR over 5y
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Computed from 5 filingsManufactures firefighting chemicals including fire retardants, foam concentrates and fire‑extinguisher agents, and supplies related equipment systems for fire suppression. Also produces lubricant…
Serves B2B and public-sector customers in fire safety, wildland firefighting, aviation, oil and gas, municipal services, industrial facilities, utilities, fire extinguisher servicing and military…
Financial Health
StrongStrong · Hiring · 9% CAGR over 4y
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Computed from 5 filingsProvides search engine marketing services including search engine optimisation, pay‑per‑click management, technical SEO, content marketing, digital PR and analytics consultancy. Develops SEO software…
Serves marketing teams at large brands and SMEs, alongside SEO professionals and SEO agencies worldwide that need technical SEO audit tooling.
Financial Health
StableStable · 2% CAGR over 4y
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Computed from 5 filingsDevelops and supplies digital psychometric assessment tools and learning materials used for employee selection, leadership development, and team development. Provides online personality profiling…
Serves HR, learning and development, leadership and talent selection teams in organisations, plus coaches and practitioners seeking qualifications, across global markets.
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HealthyHealthy · Hiring · 17% CAGR over 4y
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Computed from 5 filingsProvides sales and marketing support for a group developing enterprise DevOps software. Activities promote tools for version control, test data management, application testing, infrastructure…
Sells to enterprise software development and DevOps teams building mission-critical applications, including organisations in financial services, software and IT, media, gaming, semiconductor,…
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StrongStrong · Hiring · 9% CAGR over 4y
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Computed from 3 filingsDevelops software and consulting services for enterprise content management modernisation, including tools for migrating legacy ECM systems to Microsoft 365, content governance, archiving, document…
Serves enterprise and public-sector organisations with large content estates, particularly in legal, retail, finance, healthcare, government and manufacturing, including teams responsible for…
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StrongStrong · Growing, Hiring · 9% CAGR over 2y
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Computed from 5 filingsProvides coach, minibus and chauffeur‑driven car hire, and manages ground transport for corporate commuting, business travel, schools, sports teams and events. Operates multi‑vehicle transport…
Serves businesses, schools, sports organisations, event organisers and private groups needing coach, chauffeur and managed ground transport, including employee commuter shuttles, school trips, VIP…
Financial Health
StrongStrong · -1% CAGR over 4y
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Computed from 2 filingsOrganises and sells escorted holiday tours including rail journeys, river cruises and coach trips, as well as special‑interest travel such as craft workshops, bridge-playing holidays and military…
Serves B2C leisure travellers, including special-interest holidaymakers such as craft enthusiasts, bridge players, military history travellers, solo travellers and people seeking escorted coach,…
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StrongStrong · Growing, Hiring · 29% CAGR over 1y
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Computed from 2 filingsProvides IT consulting, software development and managed services, including hybrid cloud, data and AI solutions, cybersecurity, digital workplace systems, application development, and Microsoft…
Serves businesses and public-sector organisations, especially finance and insurance firms, government bodies, telecom operators, and enterprises with complex IT, cloud, data, cybersecurity, or…
Financial Health
HealthyHealthy · -12% CAGR over 1y
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Computed from 3 filingsProvides third‑party support and managed services for enterprise software including Oracle, SAP and VMware. Services include issue resolution, security updates, database and infrastructure health…
Serves B2B organisations of all sizes running Oracle, SAP and VMware enterprise software, targeting IT, ERP, database and infrastructure teams across mid-sized businesses and large global enterprises.
Financial Health
HealthyHealthy · Hiring · 20% CAGR over 2y
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Computed from 3 filingsProvides digital transformation and IT consultancy focused on SAP systems, including strategy, implementation and support. Services cover ERP transformation, data migration, project assurance, change…
Serves B2B organisations, primarily mid-market and enterprise SAP users, across consumer goods, energy, healthcare, logistics, mining, retail, manufacturing and professional services, including…
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StrongStrong · Hiring · 30% CAGR over 2y
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Computed from 2 filingsProvides hardware, software and services for banking and retail sectors, including ATMs, self-service kiosks, point-of-sale systems and digital platforms that support cash handling, checkout…
Serves banks, financial institutions and retail businesses globally, including large retailers with physical stores and banking organisations managing branch, ATM and customer-service channels.
Financial Health
StrongStrong · Profitable · -2% CAGR over 1y
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Computed from 3 filingsDevelops and sells branded sports nutrition and health supplements through an online store, including fat burners, protein powders, pre‑workout formulas, amino acids, supergreens, hydration products,…
Sells directly to fitness-focused consumers, gym users and athletes seeking products for weight loss, muscle gain, workout performance, hydration, recovery and general wellness through an online…
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StrongStrong
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Computed from 5 filingsProvides cloud-based document and email management software for law firms and in-house legal teams. Platform supports document storage, search, collaboration, workflow automation, security controls,…
Serves legal professionals in small, midsize and large law firms, in-house legal departments, and public sector legal teams, including federal, state, local government and higher education…
Financial Health
StrongStrong · Hiring · 22% CAGR over 5y
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Computed from 4 filingsProvides a cloud-based platform for managing international workforces, including global payroll processing, HR management, contractor and employee hiring, compliance support, benefits administration,…
Serves businesses from startups to enterprises, especially HR, finance, payroll, IT and operations teams managing international employees and contractors across multiple countries, including tech…
Financial Health
StrongStrong · Growing, Hiring · 30% CAGR over 3y
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Computed from 4 filingsOnline retailer of door furniture and architectural ironmongery, including door handles, knobs, hinges, pull handles and cabinet hardware. Supplies products from multiple hardware brands to trade and…
Serves a mix of B2B and B2C customers, including housebuilders, shopfitters, joiners, self-builders and DIY customers sourcing door furniture and ironmongery for projects of varying sizes.
Financial Health
StrongStrong · Hiring · 8% CAGR over 3y
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Key facts
About 9% of the trading cohort reports turnover above £5M (47 of 496 firms) — the rest sits below that revenue band.
4% of the cohort was incorporated since 2022 (23 firms), so a sizeable share is in its first few filing cycles.
63.3% of Reading tag-management users also run a content-management platform, and 45.4% also run analytics tooling.
CDN or security tooling appears in 43.8% of the cohort, while bot checks appear in 38.1%.
Field Services & Trades accounts for 12.3% of the cohort, ahead of Advanced Manufacturing at 9.5% and IT Services & Managed Services at 8.1%.
ICO guidance covers cookies, tracking pixels, link decoration, device fingerprinting, web storage and scripts or tags, with third-party technologies remaining the operator’s responsibility.
UK digital ad spend reached £35.5 billion in 2024, up 13% year on year; search accounted for 47% at £16.6 billion, while video display reached £8.3 billion.
What else do Google Tag Manager users run?
Share of the 496 Google Tag Manager-running UK companies where each technology was also detected. As of June 2026.
Who runs Google Tag Manager 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
£653.7K
Median UK turnover
9.5%
Above £5M turnover
23
Incorporated since 2022
Verified directors — included in the file
Director names and roles for these 1,030 companies, alongside financials and websites, in one Excel + CSV file.
How Google Tag Manager 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.
Google Tag Manager is a trademark of its respective owner. Firmbase is not affiliated with, sponsored by, or endorsed by the trademark owner.
Google Tag Manager elsewhere
Frequently asked questions
How many companies in Reading use Google Tag Manager?
How is Google Tag Manager usage detected?
What kinds of companies use Google Tag Manager in Reading?
What do Google Tag Manager users in Reading also run?
How fresh is this data?
Can I get contact details for these companies?
Buy all 1,030 companies as a spreadsheet.
One Excel/CSV file with company details, websites and key data — yours to download and use.