Companies Using reCAPTCHA in Portsmouth: 472 Active Firms (2026)
Companies running CAPTCHA in Portsmouth use website challenge checks to reduce form spam and automated abuse across local commercial sites.
Adoption typically sits with marketing, operations and web teams rather than with dedicated security functions. The control is usually a small but business-critical website layer: enough to protect enquiry forms, quote requests, registration paths and payment-adjacent journeys, without implying a large security programme. Among Portsmouth users, the signal is more about operational maturity than deep technical specialism. These are businesses that rely on their public sites for lead capture or customer service, often with external agencies maintaining the web estate and internal teams owning conversion, compliance and customer experience.
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Portsmouth has 472 actively trading companies running CAPTCHA-style verification, giving the city a visible local adoption base rather than a niche of specialist software sellers. Reported employment across the cohort is 2,617 people, which points to a mainly SME footprint with some larger employers. Sector mix is practical and website-led: Field Services & Trades account for 21.8% of the cohort, Construction for 14.6%, Advanced Manufacturing for 10.2%, Wholesale & Distribution for 9.1%, and Real Estate & Property for 8.1%. That pattern fits sites where enquiries, quotes and customer access need basic abuse prevention.
Challenge-check services sit at the edge of privacy, procurement and user-experience decisions. Website operators still need to understand what signals are collected, whether cookies or device identifiers are used, how long logs are retained, and whether any processing sits outside the immediate web-hosting arrangement. Procurement is often indirect, bundled through site maintenance, form tooling or digital agency retainers. For Portsmouth firms serving local consumers and business customers, the practical issue is usually proportionality: reduce spam and automated abuse without creating avoidable friction for legitimate enquiries.
Adoption appears likely to remain tied to ordinary website maintenance rather than major security programmes. Smaller firms tend to keep challenge checks because they are familiar, cheap to administer and easy to hand off to agencies; larger employers may push toward quieter risk scoring, consent-aware configuration and less intrusive customer journeys. Consolidation in website stacks could reduce separate buyer choices, with verification bundled into hosting, forms and traffic management. The direction is less about novelty than hygiene: keeping public channels usable while automated traffic remains a persistent nuisance.
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 reCAPTCHA rises with company size across the trading companies in this cohort. 1.9% of the 16,857 companies with under 10 employees run reCAPTCHA (312 detected). 19.9% of the 773 companies with 10–50 employees run reCAPTCHA (154 detected). 19.4% of the 72 companies with over 50 employees run reCAPTCHA (14 detected). That is a 17.5% gap between the over 50 employees and under 10 employees bands.
472
Active firms
2026
18
Above £5M turnover
Trading firms
6
Median headcount
Filed accounts
1,112
Verified directors
Across this cohort
Top companies using reCAPTCHA in Portsmouth
Ranked by sales-readiness score: an AI model assesses what each company does, its sector and size, and scores its overall fit. Best-fit prospects appear first.
Financial sub-scores
Computed from 5 filingsDevelops custom web and mobile applications and eCommerce systems. Provides cloud-based software development, UI design, backend infrastructure and APIs. Also develops proprietary products including…
Serves B2B startups and scaling companies, from local to global clients, particularly in eCommerce, PropTech, FinTech and EventTech, plus property professionals using inventory and inspection…
Financial Health
StrongStrong · Hiring · 13% CAGR over 5y
Location
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Computed from 5 filingsProvides residential estate agency and lettings services, including property sales, rental listings, tenant sourcing, landlord services, property valuations, and marketing of homes. Operates property…
Serves residential property buyers, home sellers, landlords, tenants and buy-to-let investors in Portsmouth, Southsea and surrounding areas.
Financial Health
HealthyHealthy · Growing · 0% CAGR over 4y
Location
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Computed from 4 filingsSupplies CCTV and video surveillance equipment, access control systems, intruder alarms, and related security products through an online store, including cameras, recorders, detectors, intercoms,…
Sells B2B to security installers, electrical contractors and trade buyers across the UK needing CCTV, access control, intruder alarm, networking, lighting and related security products.
Financial Health
StrongStrong · -90% CAGR over 2y
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Computed from 3 filingsProvides recruitment and staffing services connecting candidates with employers across sectors including architecture, construction, engineering, energy, technology, facilities management, and…
Serves hiring companies and jobseekers in architecture, construction, engineering, energy, data centres, defence, facilities management, maritime, plant, and water sectors.
Financial Health
HealthyHealthy · -8% CAGR over 2y
Location
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Computed from 5 filingsProvides daycare and early years childcare for children aged 0–5, operating nursery groups by age, offering funded childcare places, meals and nutrition, and supervised activities, along with parent…
Serves parents and families in Portsmouth/Fratton seeking nursery and early years childcare for children aged 0-5+, including funded, emergency and fun club places.
Financial Health
StrongStrong · Hiring · 7% CAGR over 4y
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Computed from 3 filingsProvides chartered accountancy and tax advisory services for businesses and individuals, including audit and assurance, bookkeeping, payroll, company secretarial support, cloud accounting, cash flow…
Serves businesses, charities and individuals across Portsmouth, Hampshire and southern England, including medical and dental practices, property firms, landlords, construction businesses, care homes,…
Financial Health
HealthyHealthy · Hiring · 14% CAGR over 2y
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Computed from 5 filingsProvides residential estate agency and lettings services, including marketing and sale of homes, rental property management, landlord services, tenant sourcing, and property valuations. Lists…
Serves homeowners, property sellers, landlords, buyers and tenants in South East Hampshire, including Portsmouth, Southsea, Havant, Waterlooville, Fareham, Portchester, Gosport and nearby areas.
Financial Health
StrongStrong · Growing, Hiring · 3% CAGR over 4y
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Computed from 3 filingsProvides residential property sales and lettings services, including property marketing, valuations, tenant sourcing, and property management for landlords. Also handles land and new homes sales and…
Serves property sellers, buyers, landlords, tenants, commercial property clients, and land/new-home developers seeking estate agency and lettings support.
Financial Health
HealthyHealthy · -8% CAGR over 2y
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Computed from 3 filingsProvides recruitment services for technical and engineering roles. Sources and places engineers, technicians, operators and managers for sectors including power generation, renewable energy,…
Serves UK employers in technical and engineering sectors, especially power generation, renewable energy and data centres, seeking managerial, operational and technical staff.
Financial Health
StableStable · Hiring · 25% CAGR over 2y
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Computed from 5 filingsProvides residential estate agency and letting services, including property sales, tenant sourcing, rental management, property valuations, and marketing of homes, land and new-build developments for…
Serves homeowners, prospective buyers, tenants, landlords and property investors across Lee-on-the-Solent, Gosport, Fareham, Portsmouth and the wider Solent region.
Financial Health
StrongStrong · Growing · 0% CAGR over 4y
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Computed from 3 filingsProvides residential property sales and lettings, property auctions, and management of residential and commercial buildings. Also offers professional property services including lease extensions,…
Serves home buyers, sellers, renters and landlords, plus leaseholders, freeholders, block directors and commercial property owners/occupiers across Brighton, Bognor Regis, Portsmouth and the South…
Financial Health
StrongStrong · Growing, Hiring · 21% CAGR over 2y
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Computed from 5 filingsProvides mobile vehicle cosmetic repair services, including bumper scuff, scratch, stone chip and minor dent repairs, and alloy wheel refurbishment such as kerb damage and diamond‑cut wheel repairs…
Serves private vehicle owners across the UK and trade buyers, including car dealerships, fleet operators, insurers and rental companies, that need minor cosmetic vehicle repair services.
Financial Health
StrongStrong · Growing, Hiring · 9% CAGR over 4y
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Computed from 5 filingsProvides residential property sales and lettings agency services, including marketing properties for sale or rent, tenant find services for landlords, and leasehold block management for residential…
Serves tenants, home buyers and sellers, landlords, and leasehold block owners or management companies in Portsmouth and surrounding areas across residential and commercial property.
Financial Health
HealthyHealthy · 0% CAGR over 4y
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Computed from 4 filingsProvides electrical installation, maintenance and testing services for domestic, commercial and industrial properties. Carries out rewiring, appliance testing, and installation of access control…
Serves domestic homeowners, landlords, commercial premises and industrial businesses in Portsmouth and across Hampshire requiring electrical contractors.
Financial Health
StableStable · 0% CAGR over 3y
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Computed from 5 filingsProvides legal services to individuals and businesses, including family and matrimonial law, employment disputes, civil and commercial litigation, residential conveyancing, wills and probate,…
Serves private individuals and businesses, including families, employees, landlords, property buyers, startups and commercial organisations in Portsmouth, Waterlooville, Fareham and across the UK.
Financial Health
StrongStrong · Growing, Hiring · 3% CAGR over 4y
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Computed from 2 filingsInstalls and repairs flat roofing systems for residential, commercial, and industrial buildings. Services include metal decking installation, built-up felt roofing, bitumen hot melt systems, single…
Serves commercial and industrial property owners, contractors, and homeowners with flat roofing projects across Portsmouth, Hampshire and the South Coast.
Financial Health
StrongStrong · Hiring · 100% CAGR over 1y
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Computed from 4 filingsOperates a nursery and daycare service providing childcare for young children. Offers supervised play and learning activities, meals and nutrition, funded childcare places, and parent services…
Serves parents and carers of young children seeking nursery places, funded childcare information and parent support, primarily in the Paulsgrove and Portsmouth area.
Financial Health
HealthyHealthy · Hiring · 17% CAGR over 3y
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Computed from 5 filingsDevelops and provides cloud-based enterprise software for automotive, truck, bus and equipment businesses. Its A365 platform, built on Microsoft Dynamics 365, integrates ERP, CRM and dealer…
Serves B2B organisations in the automotive, truck and bus, and heavy equipment sectors, including dealers, distributors, OEM-linked operations, rental and fleet businesses, and aftersales/service…
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StrongStrong · Growing · 0% CAGR over 4y
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Computed from 5 filingsProvides pipe engineering and hydraulic fluid system services for marine and offshore sectors, including pipe and hose manufacture, hydraulic system builds, coded welding, flushing, mechanical…
Serves B2B and public-sector customers in the marine sector, including commercial vessel operators, military/naval organisations, offshore operators and prime contractors managing shipbuilding and…
Financial Health
StrongStrong · Hiring · 14% CAGR over 4y
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Computed from 5 filingsProvides technical and management consultancy services including operational analysis, cost engineering, systems engineering, programme and project management (P3M), and business case development.…
Serves UK public-sector bodies and large organisations in defence, energy and sustainability, nuclear, space and transport, including government programme teams making major investment and…
Financial Health
StrongStrong · Hiring · 108% CAGR over 4y
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Computed from 5 filingsProvides contract research services to pharmaceutical, biotechnology and medical device organisations, including clinical trial management, bioavailability and bioequivalence studies, regulatory…
Serves global pharma, biotech and medical device sponsors, plus government agencies and non-profits involved in clinical development, regulatory, pharmacovigilance and post-market programmes.
Financial Health
HealthyHealthy · Hiring · 11% CAGR over 4y
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Computed from 5 filingsProvides recruitment advertising services, including posting job vacancies across job boards and media channels, planning campaigns using performance data, and purchasing advertising space in bulk to…
Serves B2B employers, in-house recruitment and HR teams, and staffing agencies that manage vacancy advertising budgets across job boards, social media and offline media.
Financial Health
HealthyHealthy · -66% CAGR over 4y
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Computed from 5 filingsProvides PCB assembly and electronic manufacturing services, including surface mount and conventional assembly, prototyping, BGA rework, inspection and testing, cable assemblies, and box build…
Serves UK businesses of all sizes, particularly engineering and project teams in regulated or safety-driven sectors including marine, medical, defence, transportation, surveillance and automotive.
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HealthyHealthy
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Computed from 3 filingsProvides managed IT services including technical support, cloud infrastructure, cybersecurity and compliance management. Supplies and configures hardware and software, offers software licensing, and…
Serves SMEs and local businesses in the south of England that need outsourced IT support, cloud services, security and compliance, hardware, and software licensing.
Financial Health
HealthyHealthy · -5% CAGR over 2y
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Computed from 5 filingsProvides commercial cleaning and facilities support services for organisations, including office, retail and accommodation cleaning, bio-cleaning, and cleaning for venues, children’s centres, council…
Serves businesses and public-sector organisations across the South UK, including offices, retailers, accommodation providers, councils, children's centres, country parks, entertainment venues and…
Financial Health
StrongStrong · Hiring · 5% CAGR over 4y
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Computed from 5 filingsProvides communications and digital marketing consultancy, including brand and marketing strategy, website and user experience design, web and software development, search engine optimisation, paid…
Serves businesses and organisations seeking support with digital and printed communications, including clients needing brand, website, ecommerce, software, marketing and audience growth expertise.
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StrongStrong · Growing, Hiring · 16% CAGR over 5y
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Computed from 4 filingsProvides commercial cleaning and facilities support services, including communal area cleaning, end-of-tenancy and void property cleaning, after-builders cleans, office and carpet cleaning, wheelie…
Serves large organisations in the UK’s commercial and public sectors, including housing providers, estates and facilities teams, property managers, offices, student accommodation operators, builders,…
Financial Health
StrongStrong · Growing, Hiring · 62% CAGR over 3y
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Computed from 5 filingsDesigns and supplies marine fire suppression and fire detection systems for commercial vessels and pleasure craft, including pre‑engineered and custom systems, extinguishers, lithium‑ion battery fire…
Serves commercial marine operators, boatbuilders, marine dealers and pleasure craft owners, with customers across Europe and the Middle East.
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StrongStrong · Growing, Hiring · 3% CAGR over 4y
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Computed from 3 filingsProvides engineering consultancy and installation of building energy management systems (BEMS) and HVAC controls. Services include system design, control panel build, software graphics,…
Serves businesses, institutions and facilities teams with commercial or industrial buildings across Hampshire, West Sussex and the wider south, including clients managing heating, hot water, HVAC and…
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StrongStrong · Growing, Hiring · 10% CAGR over 2y
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Computed from 2 filingsProvides traffic management services for roadworks and events, including road closures, temporary traffic signals, signage, contraflow systems, and narrow lane layouts. Also offers traffic management…
Serves business and public-sector buyers responsible for small to medium road, event and highway works across Dorset, Hampshire, Surrey, Berkshire, Wiltshire and West Sussex.
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StrongStrong · Growing · 0% CAGR over 1y
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Computed from 5 filingsProvides financial planning and wealth management advice, including investment and savings planning, retirement planning, inheritance tax planning, protection planning, mortgages, and…
Serves private clients and business professionals in and around Hampshire, including business owners, company directors, senior executives, city professionals, retirees and people planning…
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StableStable · Hiring · 9% CAGR over 4y
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Computed from 3 filingsDevelops virtual, augmented and mixed reality software and simulations for training and operational preparation. Builds immersive 3D environments and modelling systems for sectors including defence,…
Serves defence, aerospace, maritime, land operations and emergency response organisations, including public-sector and private-sector teams needing immersive training and simulation environments.
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StrongStrong · Growing, Hiring · 246% CAGR over 2y
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Computed from 5 filingsProvides specialist commercial and industrial cleaning services for businesses, including ventilation and kitchen extract system deep cleaning, kitchen and high‑level deep cleaning, gutter cleaning,…
Serves commercial, industrial and public-sector organisations across the UK, including facilities and estates managers for schools, colleges, transport hubs, galleries, offices and catering premises.
Financial Health
StrongStrong · Hiring · 15% CAGR over 4y
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Computed from 5 filingsOperates a residential care home providing accommodation and personal care for older people, including those with dementia. Offers day care and respite care, en‑suite bedrooms, meals prepared on…
Serves older adults and people living with dementia, plus their families, seeking residential, day or respite care in the Southampton and Portsmouth area.
Financial Health
HealthyHealthy · -1% CAGR over 4y
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Computed from 2 filingsProvides software engineering services including modelling and simulation, optimisation algorithms, and development of synthetic training environments. Works on robotics and autonomous systems…
Serves UK defence organisations and adjacent technical sectors, including teams working on autonomous systems, synthetic training environments, land and maritime simulation, and offshore wind farm…
Financial Health
StrongStrong · Hiring · 29% CAGR over 1y
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Computed from 5 filingsProvides insurance brokerage and risk advisory services, arranging commercial and personal insurance policies for businesses, private clients and not‑for‑profit organisations, and offering guidance…
Targets a mix of B2B, B2C and nonprofit customers: businesses across varied industry sectors, private clients, and not-for-profit organisations.
Financial Health
StrongStrong · Hiring · 20% CAGR over 5y
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Computed from 5 filingsProvides recruitment and staffing services, placing temporary, permanent and contract workers. Recruits for roles in office support, accountancy, legal, industrial and technical positions, and offers…
Serves employers hiring temporary, permanent and contract staff, plus jobseekers, in the Hampshire area across office support, accountancy, industrial and technical support roles.
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HealthyHealthy · Hiring · 11% CAGR over 4y
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Computed from 5 filingsSupplies professional power tools, hand tools, accessories and small plant to utilities, public sector and construction customers. Provides equipment packages with compliance documentation, along…
Serves trade and public-sector buyers including utilities, MOD, housing providers, blue light services, NHS, prisons, education, aviation/aerospace, local authorities, construction companies and…
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StrongStrong · Growing, Hiring · 14% CAGR over 4y
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Computed from 5 filingsSells used cars and vans through an online dealership platform. Provides vehicle search, part‑exchange and vehicle valuation services, and arranges motor finance options such as hire purchase and PCP…
Serves private motorists in Portsmouth and Hampshire looking to buy, finance, part-exchange or sell used cars and vans, including buyers seeking automatic or 7-seater vehicles.
Financial Health
HealthyHealthy · Hiring · 5% CAGR over 4y
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Computed from 5 filingsProvides recruitment and staffing services for engineering, technology, manufacturing and corporate roles. Sources and places contract and permanent personnel, supporting organisations with workforce…
Serves employers and jobseekers in engineering, technology, manufacturing, corporate professional, personnel and workforce roles across the UK, Europe, USA and Middle East.
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StrongStrong · Growing, Hiring · 117% CAGR over 4y
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Computed from 5 filingsProvides residential and HMO/student property letting and management services. Markets rental properties, sources and references tenants, manages maintenance and compliance, and offers landlord…
Serves residential landlords, HMO/student property landlords, and tenants seeking rental homes across Fareham, Gosport and Portsmouth in south Hampshire.
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StrongStrong · Growing · 0% CAGR over 4y
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Computed from 3 filingsDevelops and supplies IoT-based environmental monitoring devices and software for infrastructure networks. Products include battery-powered water level sensors, RTUs, road temperature and bin…
Sells to water utilities, local authorities, highways agencies, civil engineering contractors and infrastructure operators responsible for wastewater networks, flood-prone drainage assets, roads and…
Financial Health
StrongStrong · Hiring · 41% CAGR over 2y
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Computed from 3 filingsSupplies coaxial connectors, coaxial cables and custom cable assemblies for electronic and RF applications. Offers connector types, adaptors, panel and PCB mounts, micro‑coax assemblies, and related…
Sells to B2B technical buyers, electronics manufacturers, RF engineers and broadcast/communications teams needing coaxial connectivity components and cable assemblies.
Financial Health
HealthyHealthy · Hiring · 23% CAGR over 2y
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Computed from 5 filingsProvides recruitment and staffing services across HR, commercial, accountancy and finance, and IT sectors. Sources candidates, advertises job vacancies, and supports employers with hiring, including…
Serves employers and jobseekers, covering HR, accountancy and finance, IT and technology, and commercial roles such as sales, marketing, administration, customer service, secretarial and supply…
Financial Health
StrongStrong · Growing, Hiring · 6% CAGR over 4y
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Computed from 5 filingsProvides specialist recruitment and executive search services for international businesses. Sources and places mid‑ to senior‑level candidates for temporary, contract and permanent roles in financial…
Serves international businesses in financial services, pharmaceutical and medical, and commerce and industry sectors, recruiting mid-to-senior level temporary, contract and permanent staff, alongside…
Financial Health
StrongStrong · Hiring · 24% CAGR over 4y
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Computed from 5 filingsSupplies customised teamwear, workwear, and branded merchandise for sports clubs, schools, charities, and businesses. Provides product sourcing, branding and design, and operates online club shops…
Serves sports clubs from professional to grassroots, schools and education providers, charities, and businesses across the UK and Ireland needing teamwear, workwear, club shops, or branded…
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StrongStrong · Growing, Hiring · 19% CAGR over 4y
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Computed from 3 filingsProvides driver safety and fleet risk management services, including online driver risk assessments, licence verification, telematics data analysis, and smartphone monitoring. Also delivers driver…
Serves businesses and organisations operating vehicle fleets, including fleet, safety and risk managers responsible for employee drivers, grey fleet users and telematics-enabled driver safety…
Financial Health
HealthyHealthy · Hiring · 15% CAGR over 2y
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Computed from 5 filingsProvides residential estate agency services including property sales, lettings and landlord management. Markets homes, arranges viewings, negotiates transactions, and offers property valuations and…
Serves residential property sellers, landlords, buyers and tenants in Waterlooville, Portsmouth and surrounding Hampshire areas, covering home sales, lettings and property management clients.
Financial Health
StableStable · Hiring · 9% CAGR over 4y
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Computed from 3 filingsProvides membership services for businesses including networking events, training, advice, and access to resources such as HR, legal, insurance and tax support. Also offers export documentation and…
Serves businesses across Hampshire and the Solent, from startups and growing SMEs to established sector leaders, including employers seeking networking, training, international trade support and…
Financial Health
HealthyHealthy · Hiring · 10% CAGR over 2y
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Computed from 3 filingsDevelops navigation, robotics and autonomous systems for defense, maritime and aerospace applications, including inertial navigation systems, mine countermeasure equipment, unmanned surface and…
Serves public-sector defence organisations, including navies and armies, plus maritime, offshore energy, oil and gas, construction, seabed survey, ocean science and aerospace manufacturers and…
Financial Health
StrongStrong · Growing, Hiring · 13% CAGR over 2y
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Key facts
About 3% of the trading cohort reports turnover above £5M (18 of 472 firms) — the rest sits below that revenue band.
4% of the cohort was incorporated since 2022 (22 firms), so a sizeable share is in its first few filing cycles.
Content-management software appears alongside website challenge checks on 76.1% of Portsmouth sites in this cohort (359 firms).
Web analytics appears on 53.8% of sites (254 firms), while tag-management tooling appears on 33.7% (159 firms).
Field services and trades account for 21.8% of the cohort (103 firms), followed by construction at 14.6% (69 firms).
Financial-health bands are mixed: 23.5% sit in the highest band (111 firms), 16.5% in the weak band (78 firms), and 6.1% are distressed (29 firms).
The cohort includes 1,112 verified directors, which points to a sizeable local buying audience around website maintenance and form security.
What else do reCAPTCHA users run?
Share of the 472 reCAPTCHA-running UK companies where each technology was also detected. As of June 2026.
Who runs reCAPTCHA 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
£533.6K
Median UK turnover
3.8%
Above £5M turnover
22
Incorporated since 2022
Verified directors — included in the file
Director names and roles for these 890 companies, alongside financials and websites, in one Excel + CSV file.
How reCAPTCHA 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.
reCAPTCHA is a trademark of its respective owner. Firmbase is not affiliated with, sponsored by, or endorsed by the trademark owner.
reCAPTCHA elsewhere
Frequently asked questions
How many companies in Portsmouth use reCAPTCHA?
How is reCAPTCHA usage detected?
What kinds of companies use reCAPTCHA in Portsmouth?
What do reCAPTCHA users in Portsmouth also run?
How fresh is this data?
Can I get contact details for these companies?
Buy all 890 companies as a spreadsheet.
One Excel/CSV file with company details, websites and key data — yours to download and use.