Companies Using Common Ninja in London: 88 Active Firms (2026)
London companies running embeddable web-widget technology add interactive site elements while managing cookies and UK GDPR duties.
Adoption tends to sit with marketing, ecommerce, content and operations teams rather than central engineering groups. The tool layer is typically used for forms, galleries, social proof, calculators, scheduling prompts or other modular site components, with buying decisions made by owners, commercial managers or small digital teams. Running this stack signals a web-led go-to-market model: the company is prepared to pay for packaged functionality, but usually wants configuration over custom development. Engagements are therefore closer to website optimisation and conversion work than core systems replacement, often alongside hosted-site builders, analytics tags and consent tooling.
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London has 88 actively trading companies running this embeddable widget stack. The adoption base is small and practical rather than dominated by enterprise procurement: firms tend to use widgets where a public website carries sales, booking, recruitment or content-discovery work. Reported employment totals 1,000 people across the cohort, giving the market a visible but relatively compact operating footprint. Field services and trades, education and training, construction, property, and recruitment all appear in the sector mix, which points to website utility and lead capture as the common thread rather than a single software-buying vertical.
Website-widget use sits inside the broader digital services and software market rather than a dedicated licensing regime. The practical constraint is usually privacy compliance. The ICO expects organisations using cookies or similar technologies to tell people they are present, explain what they do and why, and obtain consent before non-essential storage or access takes place. Consent has to be “freely given, specific and informed” and recorded through an “unambiguous positive action”. Where a widget captures, enriches or passes on personal data, UK GDPR and the Data Protection Act apply as well, so procurement tends to involve both marketing usefulness and data-handling checks.
Adoption appears likely to remain pragmatic. Smaller web-led organisations tend to prefer packaged widgets when they need visible site changes without commissioning bespoke development, while more mature operators fold those functions into wider marketing-operations, consent-management and analytics workflows. That creates a split market: lightweight embeds for speed, and more governed deployments where tracking, permissions and supplier due diligence matter. Consolidation pressure may come less from buyers seeking a unified widget suite than from adjacent website platforms bundling similar functions into ordinary site-management tools.
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 Common Ninja rises with company size across the trading companies in this cohort. 0% of the 532,485 companies with under 10 employees run Common Ninja (65 detected). 0.1% of the 15,364 companies with 10–50 employees run Common Ninja (20 detected). 0.2% of the 1,763 companies with over 50 employees run Common Ninja (3 detected). That is a 0.2% gap between the over 50 employees and under 10 employees bands.
88
Active firms
2026
6
Above £5M turnover
Trading firms
7
Median headcount
Filed accounts
174
Verified directors
Across this cohort
Top companies using Common Ninja 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 3 filingsProvides marketing technology services including marketing automation implementation, CRM integration, campaign management, and digital asset management tools. Also offers strategy support, campaign…
Serves B2B customers including start-ups, small businesses, agencies and small marketing teams, primarily marketers responsible for lead generation, customer engagement and campaign management.
Financial Health
StrongStrong · Hiring · 24% CAGR over 2y
Location
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Computed from 5 filingsProvides brokerage and arrangement of business and property finance, including development finance, commercial mortgages, bridging loans, asset finance, invoice finance, equipment finance, VAT loans,…
Serves businesses, property developers and investors seeking finance for growth, asset purchases, commercial property, buy-to-let, land acquisition, construction, renovation and redevelopment…
Financial Health
StrongStrong
Location
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Computed from 2 filingsDevelops and supplies agency management software for advertising, media and creative businesses. Systems support project and time management, media planning and buying, job costing, billing, document…
Serves advertising, PR, media, digital, retail, events and post-production agencies, from small agencies to large agency groups, plus corporate departments managing advertising budgets globally.
Financial Health
HealthyHealthy · Hiring · 25% CAGR over 1y
Location
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Computed from 3 filingsDevelops Salesforce‑native professional services automation software providing project management, resource planning, services billing, revenue management and customer workspaces, helping services…
Serves B2B professional services organisations and teams, including implementation, consulting and managed services providers, particularly Salesforce users, partners and PS leaders.
Financial Health
StableStable · -92% CAGR over 2y
Location
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Computed from 5 filingsProvides digital marketing consultancy and advertising management for e‑commerce businesses. Services include marketing strategy development, paid media campaigns on platforms such as Google and…
Serves B2B and D2C businesses that sell online via ecommerce stores, booking systems or subscription checkouts. Targets UK-based small and medium-sized brands, especially under £10m revenue, across…
Financial Health
StrongStrong · Hiring · 41% CAGR over 4y
Location
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Computed from 5 filingsProvides sustainability consulting and a digital platform for businesses to measure greenhouse gas emissions, develop science‑based reduction plans, and offset carbon through verified climate and…
Serves businesses pursuing sustainability and net zero programmes, including employers offering employee climate benefits, plus employee benefit/reward platforms and individual consumers seeking…
Financial Health
StrongStrong
Location
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Computed from 5 filingsSupplies human hair extensions and related products including clip‑ins, tape and micro ring systems, wefts and pre‑bonded tips, along with application tools, adhesives, colour rings, training heads…
Serves a mix of B2B and B2C customers: professional hair stylists, salons and extension technicians, plus retail consumers buying hair extension products and aftercare online.
Financial Health
StrongStrong · Growing, Hiring · 10% CAGR over 4y
Location
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Computed from 4 filingsProduces and sells egg‑free cakes, cupcakes, brownies and cheesecakes for occasions such as weddings, birthdays and celebrations. Offers custom, themed and photo cakes with online ordering, delivery…
Sells to UK consumers seeking egg-free cakes and desserts for birthdays, weddings, baby showers, religious celebrations and other occasions, including vegetarian, halal and kosher dietary needs.
Financial Health
StrongStrong · Growing · 0% CAGR over 3y
Location
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Computed from 3 filingsProvides coworking spaces and serviced offices with flexible memberships. Offers private offices, meeting rooms, part‑time offices and virtual office services, alongside shared workspace facilities…
Serves freelancers, small businesses and teams in North London seeking flexible coworking, serviced offices, meeting rooms and virtual office options, particularly around Archway and Hornsey.
Financial Health
WeakWeak · -6% CAGR over 2y
Location
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Computed from 4 filingsProvides advertising and creative agency services including brand strategy, campaign development, creative concepting, content production, and marketing communications for commercial clients across…
Serves B2B clients, mainly brand owners and marketing teams at organisations commissioning advertising, brand and creative campaign work, including consumer-facing brands featured in its case studies.
Financial Health
StableStable · Hiring · 5% CAGR over 4y
Location
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Computed from 5 filingsProvides subscription-based market intelligence on steel and related commodities, including news, price data, market reports and analysis. Publishes industry reports and pricing indices, and…
Serves B2B subscribers and trial clients across global steel and related commodities markets, including organisations focused on ferrous products, raw materials, minor/base/precious metals, energy,…
Financial Health
StableStable · Hiring · 4% CAGR over 4y
Location
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Computed from 5 filingsDesigns and sells women’s clothing made from natural textiles including linen, silk, and cotton. Offers dresses, tops, trousers, skirts, and shorts through an online store, with collections produced…
Sells directly to consumers shopping for women's clothing, particularly buyers seeking dresses, tops, trousers, skirts and shorts made from natural textiles. Targets an international retail audience,…
Financial Health
StableStable · 0% CAGR over 4y
Location
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Computed from 3 filingsDevelops AI software that analyses public consultation responses and generates structured reports. The platform ingests feedback from surveys, emails and documents, categorises comments, identifies…
Serves local authorities and public-sector consultation teams, especially planning policy, transport and parking officers handling statutory and high-volume public consultations.
Financial Health
DistressedDistressed · -9% CAGR over 2y
Location
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Computed from 5 filingsDevelops digital healthcare software that manages clinical pathways and remote patient monitoring. Platform collects patient data, images and questionnaires, automates triage and administrative…
Sells to NHS Trusts and other healthcare providers, targeting clinical, operational and digital transformation teams managing hospital, community, mental health and specialist care pathways.
Financial Health
StrongStrong · Growing, Hiring · 98% CAGR over 4y
Location
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Computed from 3 filingsOrganises business‑to‑business jewellery exhibitions and events that showcase high‑end jewellery and watch brands, providing exhibition space and networking opportunities for brands, buyers, and…
Serves B2B luxury jewellery and timepiece brands, jewellery buyers, suppliers and trade professionals participating in high-jewellery events in Geneva and London.
Financial Health
StrongStrong
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Computed from 5 filingsOperates women-only fitness studios offering small-group and one-to-one strength training sessions. Provides online personal training, health and nutrition coaching, and workshops focused on strength…
Serves women seeking fitness, strength coaching and wellbeing support, including in-person members around Brockley and Peckham and online clients wanting remote guidance.
Financial Health
StrongStrong · Hiring · 50% CAGR over 4y
Location
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Computed from 4 filingsProvides venture clienting and innovation advisory services for insurers and enterprises. Scouts and evaluates technology startups, runs research through its Risk Futures Lab, and supports…
Serves B2B enterprise buyers, especially insurers and large corporates focused on risk and resilience. Targets innovation, strategy and operational leaders seeking to evaluate, adopt and scale…
Financial Health
StableStable · Hiring · 14% CAGR over 3y
Location
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Computed from 5 filingsProvides sales, marketing, and market‑entry support for educational technology and publishing companies, helping them expand into international markets. Promotes and distributes learning products…
Sells to educational technology providers and publishing companies seeking international expansion, particularly firms with established products looking to grow revenue in new overseas markets.
Financial Health
WeakWeak · -73% CAGR over 4y
Location
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Computed from 5 filingsProvides consulting and project management services for corporate rebranding and brand change programmes, including brand implementation planning, brand management processes, and brand technology…
Serves large enterprises and global brands, targeting brand, marketing and corporate identity teams in complex multi-location organisations undergoing rebrands, brand migrations or brand management…
Financial Health
StableStable · -65% CAGR over 4y
Location
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Computed from 4 filingsProvides financial trading education through online masterclasses and training programmes covering strategy development, risk management and hedging. Also supplies trading signals, market news and…
Serves aspiring and professional individual traders, plus professionals in raw materials and related industries. Also targets subscribers interested in currencies, commodities, metals, energy,…
Financial Health
WeakWeak · -21% CAGR over 3y
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Computed from 5 filingsProvides stock market education, research, and trading tools for active investors. Publishes daily and weekly market reviews, stock pick alerts, and ETF portfolio reports, and offers custom…
Targets active retail stock and ETF investors, including TradingView users and self-directed traders seeking market education, technical analysis, and portfolio guidance.
Financial Health
WeakWeak · -20% CAGR over 4y
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Computed from 5 filingsOrganises and administers the Abbott World Marathon Majors series, coordinating six international marathon events. Operates runner ranking systems, age‑group championships, virtual running…
Serves marathon runners worldwide, including recreational runners pursuing major marathon medals, age-group athletes aged 40+, elite runners and wheelchair racers, and participants in runner portals…
Financial Health
DistressedDistressed · 0% CAGR over 1y
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Computed from 5 filingsProvides online training courses and skills bootcamps for self‑employed individuals and small businesses. Programmes cover digital tools, AI app development for non‑coders, and leadership and…
Serves self-employed people, freelancers, solo founders and micro/SME business owners seeking business growth skills, with funded and paid programmes available in selected UK regions.
Financial Health
StableStable · Hiring · 7% CAGR over 4y
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Computed from 4 filingsProvides IT consulting and managed services focused on Microsoft cloud and end‑user computing. Supports cloud modernisation, Microsoft 365 adoption, data governance, security and compliance, cost…
Serves B2B organisations investing in Microsoft cloud and end-user computing, with specialist focus on healthcare, financial services, legal, and transport and logistics teams facing security,…
Financial Health
HealthyHealthy · Hiring · 6% CAGR over 3y
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Computed from 5 filingsOperates a furniture retail shop selling household furniture and decorative items. Product range includes sofas, tables, mirrors and other home furnishings offered through an in-store showroom and…
Serves consumers and households in London, particularly around Peckham, Woolwich and Wood Green, looking for home furniture through a showroom or online gallery.
Financial Health
HealthyHealthy · Hiring · 14% CAGR over 4y
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Computed from 4 filingsProvides recruitment and staffing services for organisations in regulated and high‑pressure sectors, supplying permanent, contract and temporary personnel. Supports workforce planning, rapid staff…
Serves employers in complex, regulated and high-pressure environments that need permanent, contract or temporary personnel, alongside job seekers seeking roles in those sectors.
Financial Health
HealthyHealthy · Hiring · 227% CAGR over 3y
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Computed from 5 filingsCreates and sells spiritual development books and oracle card decks, and provides online courses, memberships and guided meditations. Produces a podcast and offers workshops, events and resources…
Serves individual consumers interested in spirituality, mysticism and personal growth, including readers of oracle decks and books, podcast listeners, and participants in online courses, memberships,…
Financial Health
StrongStrong
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Computed from 3 filingsProvides recruitment and talent search services for technology, digital and change management roles. Sources and places professionals in areas including software development, data, cyber security,…
Sells to employers hiring technology, digital and change professionals, and to jobseekers seeking roles in software, data, cyber security, infrastructure, project services and senior appointments…
Financial Health
StableStable · -13% CAGR over 2y
Location
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Computed from 3 filingsProvides residential and commercial cleaning services including regular housekeeping, deep cleaning, end‑of‑tenancy cleaning, office cleaning, high‑rise window cleaning, pressure washing, and carpet…
Serves residential clients, tenants, landlords, letting agents and office-based businesses in London, including customers needing routine upkeep, move-out cleans, one-off cleans and exterior/window…
Financial Health
HealthyHealthy · -18% CAGR over 2y
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Computed from 5 filingsProvides recruitment and staffing services for the offshore energy sector. Connects engineers and technical professionals with contract roles across survey, ROV operations, trenching, inspection,…
Serves offshore energy, marine renewables and subsea communications employers needing specialist technical, engineering, survey, ROV, trenching, inspection, operations and project-management…
Financial Health
StableStable · Hiring · 29% CAGR over 4y
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Computed from 2 filingsOperates Greek‑Mediterranean restaurants and bars serving seafood, shared plates, and traditional dishes. Offers dine‑in hospitality experiences centred on Greek cuisine and drinks, and sells branded…
Serves individual consumers, groups and hospitality guests at Greek-Mediterranean restaurants and bars in international destinations including Dubai, London, Monaco, Doha, Marbella and Miami.
Financial Health
WeakWeak · Hiring · 6355% CAGR over 1y
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Computed from 3 filingsProvides pawnbroking services offering short‑term loans secured against gold, jewellery, and luxury watches. Buys and sells pre‑owned jewellery and watches, and offers repair services and watch…
Serves consumers who own gold, jewellery or luxury watches, including people seeking short-term pawnbroking loans, selling valuables, or buying pre-owned jewellery and watches.
Financial Health
WeakWeak · -9% CAGR over 2y
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Computed from 5 filingsProvides executive search and leadership advisory services, including interim management recruitment, market mapping, compensation benchmarking, board advisory, and leadership assessment, focusing on…
Serves boards, CEOs and HR leaders at companies and investors in aviation, aerospace, hospitality, healthcare, private equity, retail, consumer goods, energy transition, transport and logistics…
Financial Health
StrongStrong · Growing, Hiring · 17% CAGR over 4y
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Computed from 5 filingsProvides legal services for individuals and businesses, including commercial conveyancing, civil litigation, debt recovery, employment matters, immigration and nationality advice, criminal defence,…
Serves both businesses and individuals needing legal support, including commercial clients, landlords and tenants, employers and employees, immigrants, people facing criminal or driving matters, and…
Financial Health
StrongStrong · Growing, Hiring · 22% CAGR over 4y
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Computed from 4 filingsProvides English language education for international students, offering general English courses, IELTS and Cambridge exam preparation, evening and intensive classes, online learning, and junior…
Serves international students, adult learners and juniors aged 5–17 seeking English study in the UK, including IELTS/Cambridge exam candidates, summer school pupils, groups and education agents.
Financial Health
StrongStrong · Hiring · 34% CAGR over 3y
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Computed from 5 filingsProvides implementation, support, training and consultancy for Pegasus Opera 3 and Infor SunSystems accounting and ERP software. Also offers payroll, procurement and cloud hosting solutions, IT…
Serves UK businesses using or evaluating Pegasus Opera, Infor SunSystems, Zahara and related ERP, accounting, payroll and cloud systems, including finance teams in construction, manufacturing and…
Financial Health
HealthyHealthy · -8% CAGR over 4y
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Computed from 4 filingsProvides wedding and event services including catering, event planning and management, venue decoration, and hire of furniture and decor items such as backdrops, chairs, table linen, centrepieces,…
Serves B2C wedding clients—couples and families planning ceremonies and receptions—primarily in North London/UK, with some B2B demand from corporate event organisers.
Financial Health
WeakWeak
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Computed from 5 filingsProvides education consultancy services for international students seeking to study in the UK and other countries. Supports applications to universities and private schools, including undergraduate,…
Serves international students and their families seeking UK and overseas school, university and guardianship support, including undergraduate, master’s and PhD applicants and pupils entering British…
Financial Health
DistressedDistressed · -67% CAGR over 4y
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Computed from 5 filingsOperates an online and wholesale food store selling meat, fish, poultry, vegetables and African grocery products. Supplies items such as beef, goat, chicken, dried fish, rice, beans, oils, seasonings…
Serves retail shoppers and wholesale buyers seeking African groceries, meat, fish, poultry, vegetables and dry foods, including households and food businesses ordering online or in store.
Financial Health
WeakWeak · 0% CAGR over 4y
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Computed from 5 filingsProvides brokerage and advisory services for trade credit insurance, helping businesses insure receivables against customer non‑payment. Offers credit risk analysis, policy placement with insurers,…
Serves B2B companies that sell on credit, including finance directors, credit managers and exporters seeking to manage debtor risk across UK and international markets.
Financial Health
StrongStrong · Hiring · 37% CAGR over 4y
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Computed from 4 filingsProvides legal services specialising in real estate law, including commercial property transactions, planning, construction and environmental matters, real estate finance, and property litigation,…
Serves UK property-sector organisations, including developers, investors, occupiers, institutions and advisers, as well as major law firms and Big Four professional services firms needing real estate…
Financial Health
HealthyHealthy · Growing · 1% CAGR over 3y
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Computed from 5 filingsProvides clinical pharmacist services, recruitment, and training for GP surgeries and primary care networks. Deploys pharmacists and pharmacy technicians to support medication reviews and patient…
Serves UK primary care organisations, including GP surgeries, PCNs, Training Hubs and ICBs, plus pharmacists and pharmacy technicians seeking primary care roles, training or prescribing supervision.
Financial Health
StrongStrong · Growing, Hiring · 74% CAGR over 4y
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Computed from 3 filingsProvides residential children’s homes, foster care placements, specialist education and therapeutic services for children and young people unable to live with their families, working with local…
Serves local authority children’s services teams across Southern and Central England supporting children and young people unable to live with their families, and recruits prospective foster carers in…
Financial Health
StableStable · Hiring · 9% CAGR over 3y
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Computed from 5 filingsDistributes and exports hand tools, power tools, engineering and precision tools, air tools, cleaning equipment, electrical accessories, and industrial consumables. Supplies branded hardware,…
Serves B2B trade customers, bulk buyers and resellers seeking tools, workshop equipment, industrial supplies, cleaning, electrical and hardware products.
Financial Health
HealthyHealthy · Hiring · 6% CAGR over 4y
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Computed from 5 filingsProvides marine insurance brokerage services for shipping and maritime clients. Arranges cover including protection and indemnity, hull and machinery, cargo, shipbuilders’ risk and marine liability,…
Serves B2B customers in the shipping and maritime sector, including shipowners, vessel operators, shipbuilders, cargo owners and marine liability buyers, with emphasis on international and Latin…
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HealthyHealthy · 0% CAGR over 4y
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Computed from 5 filingsProvides investment opportunities in tangible assets including luxury real estate, rare whisky and fine art. Offers portfolio access and management services for investors seeking exposure to…
Targets private investors and clients seeking alternative tangible-asset investments, including luxury real estate, rare whisky and fine art, with an emphasis on passive-income opportunities.
Financial Health
DistressedDistressed · -16% CAGR over 4y
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Computed from 5 filingsDevelops wearable technology and software that monitor physiological signals to detect stress and emotional arousal in people with cognitive and intellectual disabilities, providing dashboards and…
Serves care organizations supporting people with cognitive disabilities and I/DD, including behaviour analysts, care managers and direct support professionals seeking tools for stress monitoring and…
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HealthyHealthy
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Computed from 5 filingsProvides flooring supply and installation services for residential, commercial, and industrial projects. Works with materials including carpet tiles, luxury vinyl tiles, vinyl sheet, rubber,…
Serves homeowners, businesses and contractors across London, spanning residential, commercial and industrial projects, including office occupiers and fit-out/interiors firms.
Financial Health
StableStable · Hiring · 7% CAGR over 4y
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Computed from 3 filingsProvides 360-degree video and photo booth rental for weddings, parties, and corporate events. Booths capture rotating videos and photos with filters and effects, with options to print images or save…
Serves corporate event organisers and private customers planning social events, parties and weddings in London who want 360 photo or video booth hire.
Financial Health
DistressedDistressed · 0% CAGR over 1y
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Computed from 5 filingsProvides accounting and tax services for businesses and individuals, including preparation of financial statements, management accounts, tax returns, and tax planning advice, along with financial…
Serves businesses, business owners and individual taxpayers, with references to executives, staff and year-end accounts suggesting SME customers as well as personal tax clients.
Financial Health
DistressedDistressed · -11% CAGR over 4y
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Key facts
About 6% of the trading cohort reports turnover above £5M (6 of 88 firms) — the rest sits below that revenue band.
4% of the cohort was incorporated since 2022 (4 firms), so a sizeable share is in its first few filing cycles.
Co-detected site-building and widget layers are common: 62.5% of the London cohort also run a website-builder platform, while 35.2% also run another embeddable-widget layer.
Tracking and analytics sit close to the widget layer, with 27.3% also running tag-management technology and 26.1% also running web-analytics technology.
The sector mix leans towards service businesses: Field Services & Trades and Education & Training each account for 13.6%, followed by Construction at 8.0%.
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UK digital-sector GVA was £177.2 billion in 2024, representing 6.8% of total UK GVA, with real-terms growth of 3.3% between 2023 and 2024.
What else do Common Ninja users run?
Share of the 88 Common Ninja-running UK companies where each technology was also detected. As of June 2026.
Who runs Common Ninja in the UK?
By sector
Sectors overlap, so shares need not sum to 100%.
By financial health
From filed accounts; firms with fewer than two filings show as insufficient history.
7
Median headcount
£500.8K
Median UK turnover
6.8%
Above £5M turnover
4
Incorporated since 2022
Verified directors — included in the file
Director names and roles for these 122 companies, alongside financials and websites, in one Excel + CSV file.
How Common Ninja 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.
Common Ninja is a trademark of its respective owner. Firmbase is not affiliated with, sponsored by, or endorsed by the trademark owner.
Common Ninja elsewhere
Frequently asked questions
How many companies in London use Common Ninja?
How is Common Ninja usage detected?
What kinds of companies use Common Ninja in London?
What do Common Ninja users in London also run?
How fresh is this data?
Can I get contact details for these companies?
Buy all 122 companies as a spreadsheet.
One Excel/CSV file with company details, websites and key data — yours to download and use.