Companies Using MailerLite in London: 77 Active Firms (2026)
London companies running email-marketing technology on their public websites use consent-led subscriber communications for acquisition and retention.
Adoption tends to sit with lean marketing, membership or audience teams that need owned-channel communications without enterprise procurement overhead. The technology handles subscriber capture, list segmentation, templates, automation and opt-out management, so its presence usually signals a company with repeat customer contact rather than a purely transactional website. Typical users are not necessarily large: median turnover is about £497k, with a median team size of 6 employees. That points to practical marketing operations where content, analytics and customer communications often sit close together, especially in ecommerce, education, events, media and software-enabled services.
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London has 77 actively trading companies running this email-marketing platform on their public websites. Reported employment across these London adopters totals 558 staff, giving the cohort a small-company tilt rather than an enterprise-software adoption profile. Sector tags point to Education & Training, Travel & Hospitality, Media & Publishing, marketing agencies and startup-labelled businesses, which fits a buyer base using owned audiences for course enquiries, bookings, newsletters, client acquisition and retention. The London pattern is therefore less about a single vertical and more about repeat digital contact with identifiable subscribers.
Regulation sits around the marketing activity rather than the platform choice. PECR, UK GDPR and the Data Protection Act shape consent capture, sender identity, suppression lists and opt-outs; ICO guidance is the practical reference point. The soft opt-in can apply to previous customers, but unsolicited consumer marketing still needs specific consent. B2B senders have more room when addressing corporate subscribers, while sole traders and some partnerships sit closer to individual-subscriber treatment. ICO direct-marketing guidance is also under review following the Data (Use and Access) Act, so compliance wording is not static.
Adoption appears likely to remain concentrated among organisations with regular audience contact, modest marketing operations and a need to show consent discipline. Migration pressure tends to come from pricing, deliverability, automation limits and the desire to connect email activity with analytics, forms and customer records. Bundling by adjacent website, commerce and customer-relationship tools may make standalone email platforms less visible over time. Even so, smaller London teams still value recognisable list management and opt-out workflows, so replacement is more likely to be gradual than sudden.
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 MailerLite rises with company size across the trading companies in this cohort. 0% of the 532,485 companies with under 10 employees run MailerLite (48 detected). 0.2% of the 15,364 companies with 10–50 employees run MailerLite (26 detected). 0.1% of the 1,763 companies with over 50 employees run MailerLite (2 detected). That is a 0.1% gap between the over 50 employees and under 10 employees bands.
77
Active firms
2026
5
Above £5M turnover
Trading firms
6
Median headcount
Filed accounts
163
Verified directors
Across this cohort
Top companies using MailerLite in London
Ranked by sales-readiness score: an AI model assesses what each company does, its sector and size, and scores its overall fit. Best-fit prospects appear first.
Financial sub-scores
Computed from 5 filingsProvides content marketing services for B2B technology companies, including content strategy, research, messaging development and campaign planning. Produces articles, case studies, web copy, social…
Serves marketing teams at B2B technology companies and their ecosystems, including tech, telecoms and professional services brands targeting finance, HR, IT and marketing audiences.
Financial Health
StrongStrong · Hiring · 24% CAGR over 4y
Location
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Computed from 5 filingsOperates an online platform listing baby and toddler classes and parent activities. Enables parents to search by age and date, view schedules, and book sessions such as music, swimming, gymnastics,…
Serves parents, expectant parents and carers of babies, toddlers and young children seeking local activities, plus UK children’s activity providers listing classes and taking bookings.
Financial Health
HealthyHealthy · Hiring · 34% CAGR over 5y
Location
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Computed from 5 filingsPublishes journalism and analysis on climate science, energy and climate policy, including news, explainers, data‑driven articles, factchecks and briefings covering emissions, renewable energy,…
Serves a global audience of climate-focused readers, including policymakers, journalists, researchers, energy and environmental professionals, and engaged members of the public.
Financial Health
HealthyHealthy · Hiring · 20% CAGR over 4y
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Provides copywriting and email marketing services for businesses, particularly SaaS companies. Creates marketing emails, onboarding sequences, landing pages, and lead‑generation funnels, and develops…
Serves businesses needing copywriting and email marketing, especially SaaS brands with free-trial or product-led growth models. Also targets small businesses seeking website content and lifecycle…
Financial Health
N/AN/A
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Computed from 5 filingsPublishes trade magazines and digital media for the construction and homebuilding sectors, including titles such as Architects Datafile and Selfbuilder & Homemaker. Provides print and online…
Serves B2B advertisers and marketing teams in the construction sector, plus industry professionals such as architects and self-build/home improvement audiences reached through its trade and consumer…
Financial Health
StableStable · -5% CAGR over 5y
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Computed from 5 filingsProvides property marketing services including branding, CGI visualisations, photography, digital design, websites and interactive tools for real estate developments, helping developers present and…
Serves B2B property developers, housebuilders, housing associations, estate-led residential projects, and interior/property brands, with some private residential clients.
Financial Health
StableStable · Hiring · 24% CAGR over 4y
Location
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Computed from 5 filingsProvides creative design services including brand identity development, web design, digital and social media assets, motion graphics and explainer videos, signage and wayfinding, and marketing…
Serves businesses of all sizes, especially marketing managers and teams needing ongoing creative support, brand consistency, integrated campaigns, and scalable marketing output without hiring…
Financial Health
WeakWeak · Hiring · 19% CAGR over 4y
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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 filingsProvides online training courses and certification programmes, including CPD‑accredited, QLS‑endorsed and RQF‑regulated courses. Offers subjects such as health and social care, teaching assistance,…
Serves individual learners, students and employers seeking CPD, QLS and regulated course access, with strong coverage for health and social care, teaching, food safety, IT, business, counselling and…
Financial Health
StrongStrong · Growing, Hiring · 6% CAGR over 4y
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Computed from 5 filingsOrganises invitation-only business summits, conferences and networking events for senior executives and technology providers in sectors such as energy, oil and gas, and manufacturing, facilitating…
Serves B2B senior decision-makers and technology solution providers in complex industries, especially European energy, oil and gas, utilities, and manufacturing, including C-level executives and…
Financial Health
WeakWeak
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Computed from 4 filingsPublishes online news, commentary and analysis on UK immigration, asylum and nationality law. Provides professional training through courses, webinars and workshops, and sells eBooks and memberships…
Serves UK immigration law practitioners, including solicitors, barristers, Immigration Advice Authority/OISC advisers, trainees and other professionals working with immigration, asylum and…
Financial Health
StrongStrong · Growing, Hiring · 44% CAGR over 3y
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Computed from 5 filingsDevelops AI software for digital news publishers, including a content management system and analytics tools that generate story recommendations, plan editorial content from audience data, and…
Serves B2B media organisations, especially digital publishers and newsrooms, with buyer roles including editors, audience teams, journalists and product leaders at publications.
Financial Health
HealthyHealthy · Hiring · 41% CAGR over 4y
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Computed from 5 filingsProvides public relations services for luxury travel, hospitality and tourism brands. Develops strategic PR campaigns, digital PR and content strategies, brand positioning, and media relations to…
Serves B2B clients in luxury travel and hospitality, including hotel groups, independent properties, resorts, tourism destinations, travel networks and industry leaders targeting international…
Financial Health
StrongStrong · Growing, Hiring · 19% CAGR over 4y
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Computed from 4 filingsOperates a cybersecurity platform that runs bug bounty and vulnerability disclosure programs, connecting organisations with vetted ethical hackers to identify software vulnerabilities. Also provides…
Sells to businesses and public sector organisations running security testing programmes, especially teams in retail, gaming, finance, hospitality, SaaS, telecoms, transport, healthcare, media,…
Financial Health
StrongStrong · Hiring · 17% CAGR over 3y
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Computed from 3 filingsRepresents residential and commercial properties as locations for film, television and photography shoots. Connects production teams with houses, studios and venues, and facilitates hire of event…
Serves photographers, filmmakers, TV and video production teams, brands, event organisers and creative agencies seeking residential, commercial and event locations in London and across the UK.
Financial Health
WeakWeak · -12% CAGR over 2y
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Computed from 5 filingsPublishes fiction titles as a digital-first independent publisher, producing ebooks, audiobooks and paperback editions. Works with debut and established authors, releasing new titles and backlist…
Sells to consumer book readers buying ebooks, audiobooks and paperbacks, especially fiction audiences interested in action, crime and romance titles, and readers seeking new releases and free books.
Financial Health
StableStable · -21% CAGR over 5y
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Computed from 5 filingsOrganises film festivals and year‑round screenings showcasing Jewish and Israeli cinema, including feature films, documentaries and shorts. Operates an online streaming platform and runs education…
Serves diverse cinema audiences in the UK and internationally, including festivalgoers, on-demand viewers, young people in education programmes, and supporters interested in Jewish and Israeli film…
Financial Health
HealthyHealthy · Hiring · 5% CAGR over 4y
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Computed from 3 filingsOperates a garden centre and online shop selling indoor and outdoor plants, shrubs, perennials, pots, planters, compost and gardening tools. Provides delivery, container planting, garden planting,…
Serves London homeowners, renters, urban gardeners and office buyers, with customers including people maintaining gardens, balconies, courtyards, roof terraces and indoor plant spaces across M25…
Financial Health
WeakWeak · -12% CAGR over 2y
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Computed from 3 filingsOperates an online platform that records live music performances in partner venues, produces studio‑quality mixes from stage audio, and enables artists to publish, stream, download, and sell…
Serves grassroots and independent music artists and live music venues, alongside fans who buy, stream and download live sets from performances at venues across the UK.
Financial Health
WeakWeak · 0% CAGR over 2y
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Computed from 5 filingsProvides an online platform and mobile app offering peer support, information guides, virtual sessions and community forums for unpaid carers. Also supplies digital tools for local authorities to…
Serves unpaid carers looking after family members or friends with disabilities, long-term illness or age-related needs, alongside UK local authorities, social care teams and carer organisations…
Financial Health
StrongStrong · Hiring · 57% CAGR over 5y
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Computed from 5 filingsOrganises guided group and self-guided adventure holidays worldwide, including trekking, cycling, mountaineering, wildlife and cultural trips. Arranges itineraries, logistics and local leaders for…
Sells to consumers and families seeking active adventure holidays, including walkers, trekkers, cyclists, mountaineers, wildlife travellers and polar explorers, across a wide range of international…
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HealthyHealthy · 2% CAGR over 4y
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Computed from 5 filingsOrganises and promotes live music performances and tours for the Chase & Status electronic music act, and sells branded merchandise including clothing and accessories through an online store.
Serves B2C music fans and eventgoers, primarily followers of Chase & Status, buying tickets, apparel and fan merchandise through its online store and event channels.
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StrongStrong
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Computed from 5 filingsDevelops software for managing and distributing product data and catalogues for building product suppliers. Provides digital product showcase mini‑sites, AI‑powered search tools, and a materials…
Serves B2B architectural product suppliers, building material manufacturers and brands that sell to architects, designers and specifiers, especially sales, marketing and catalogue/product data teams…
Financial Health
StrongStrong · Growing · 0% CAGR over 4y
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Computed from 5 filingsDesigns and sells travel packages to Formula 1 races worldwide, including escorted holidays with flights, hotel accommodation, race tickets, hospitality access, transfers and organised tours, as well…
Sells primarily to consumers seeking premium Formula 1 travel packages, including solo travellers, families and motorsport fans attending races worldwide. Also serves VIP guests looking for…
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HealthyHealthy
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Computed from 4 filingsProvides cloud-based software for party wall surveyors to manage administrative tasks. Generates party wall notices, awards and document templates, tracks case progress, stores letters and clauses,…
Serves party wall surveyors, surveying practices and firms training or expanding party wall teams, particularly professionals seeking to reduce administrative workload and manage multiple party wall…
Financial Health
StableStable · Hiring · 8% CAGR over 3y
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Computed from 5 filingsProvides artist partnership and music marketing services, supporting recording artists through promotional campaigns, playlisting and industry partnerships. Works with influencers, radio stations and…
Serves emerging and established recording artists, their managers and music industry stakeholders, alongside fans following artist news, events, drops and playlists.
Financial Health
StableStable · Hiring · 22% CAGR over 4y
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Computed from 5 filingsProvides management consulting and professional training focused on agile methods, digital and business transformation, product and project management, and enterprise architecture. Delivers courses…
Serves business leaders, IT/digital departments, product and project teams, and professionals seeking Agile, Scrum, PRINCE2, ITIL and enterprise architecture training in organisations pursuing…
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WeakWeak · 0% CAGR over 4y
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Computed from 5 filingsProvides diversity, equity and inclusion training programmes, e‑learning courses, and organisational consultancy. Offers workshops for leadership and managers, people development training, and data…
Serves organisations seeking workplace equity and inclusion, particularly C-suite leaders, senior managers, department heads, founders and people development or HR teams.
Financial Health
WeakWeak · -8% CAGR over 4y
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Computed from 3 filingsProvides virtual office services including business addresses, telephone answering and virtual receptionist support, mail forwarding, dedicated phone numbers, and bookable meeting rooms, enabling…
Serves startups, small businesses and remote or growing companies seeking a London business presence and professional front-office support without maintaining a physical office.
Financial Health
HealthyHealthy · Hiring · 41% CAGR over 2y
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Computed from 5 filingsOperates an online platform for listing, booking and managing equestrian events and training clinics, including dressage, show jumping and pony club activities. Provides online event entries,…
Serves equestrian riders and competitors booking events, plus Pony Clubs, schools, hunt clubs, venues and equestrian event organisers seeking online entries and event administration.
Financial Health
StrongStrong
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Computed from 2 filingsPublishes fiction books including crime, thriller, mystery, suspense and romance titles. Works with authors to produce and distribute digital and print books, manages genre imprints, and sells titles…
Sells to consumer readers of commercial fiction, especially crime, mystery, thriller, suspense, action and romance titles, mainly through book and ebook channels.
Financial Health
HealthyHealthy · Hiring · 18% CAGR over 1y
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Computed from 5 filingsDesigns and publishes greeting cards for retail and trade customers, offering themed ranges including humour and contemporary designs. Sells cards for birthdays, seasonal events, and other occasions…
Sells to trade buyers and retail businesses, including greeting card shops, gift retailers and other stockists seeking direct wholesale ordering from a publisher.
Financial Health
StableStable · -67% CAGR over 4y
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Computed from 4 filingsDesigns and sells scented candles, reed diffusers and fragrance refills, including glass vessel candles and refill services. Produces bespoke scents and custom candle pieces for private and corporate…
Sells to consumers buying candles, diffusers and refills, alongside private clients and corporate buyers commissioning bespoke scents, event gifts or custom vessels.
Financial Health
WeakWeak · Hiring · 36% CAGR over 3y
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Computed from 5 filingsOperates an online property auction platform for buying and selling residential, commercial and land assets. Provides traditional and modern method auctions, property listings, legal auction packs,…
Serves UK property sellers and buyers, including homeowners, landlords, investors, cash buyers, mortgage buyers, and purchasers of residential, commercial or investment properties.
Financial Health
StrongStrong · Hiring · 16% CAGR over 4y
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Computed from 4 filingsProvides e‑commerce consultancy and training focused on online marketplaces. Services include Amazon Seller Central and Vendor Central account support, product listing optimisation, PPC advertising…
Serves B2B ecommerce customers, including private-label sellers, retailers, brands, wholesalers and agencies using Amazon Seller/Vendor Central or marketplaces such as eBay, Wayfair, Bol and B&Q,…
Financial Health
WeakWeak · -13% CAGR over 3y
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Computed from 5 filingsProvides accounting and tax services for video game developers and interactive entertainment studios. Services include bookkeeping and Xero implementation, investor and management reporting, SEIS/EIS…
Serves B2B clients in the games and interactive entertainment sector, from early-stage game developers and fledgling studios to established studios developing games or interactive experiences.
Financial Health
StrongStrong · Growing, Hiring · 29% CAGR over 4y
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Computed from 5 filingsDevelops AI software platforms for manufacturing and process industries that analyse operational data to optimise production efficiency, product quality, maintenance and sustainability. Provides…
Sells to industrial operations and manufacturers pursuing digital transformation, including electronics, microelectronics, optics/lasers, food and beverage, agriculture, oil and gas, chemicals,…
Financial Health
StableStable · Hiring · 55% CAGR over 4y
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Computed from 5 filingsOperates a platform that connects companies and their employees with charity volunteering opportunities. Organises group and remote volunteering experiences, matches teams with nonprofits, and…
Sells to businesses, especially HR, people, culture and CSR teams seeking employee volunteering options for their staff, including group and remote teams across the UK and US.
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WeakWeak · -8% CAGR over 4y
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Computed from 5 filingsProvides organisational change consulting, leadership and sales training, coaching and facilitated workshops. Designs bespoke programmes and research‑led interventions to help organisations develop…
Serves B2B organisations invested in positive impact, working with leaders, sales directors, training and enablement teams, social entrepreneurs and business owners across varied industries.
Financial Health
StableStable · Hiring · 32% CAGR over 4y
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Computed from 5 filingsSpecialist recruitment agency focusing on procurement, purchasing, supply chain, operations, and commodities roles. Sources and places professionals in permanent and contract positions, and supports…
Serves employers hiring procurement, purchasing, supply chain, operations and commodities specialists, including public sector bodies, manufacturers, consultancies and energy/technology firms,…
Financial Health
DistressedDistressed · -67% CAGR over 4y
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Computed from 2 filingsDesigns and delivers entrepreneurship education programmes for young people aged 7–18, including school workshops, clubs, bootcamps and events. Provides teaching resources, mentoring and financial…
Serves schools, parents, councils, housing associations, corporates and community organisations seeking youth entrepreneurship programmes for children and young people aged 7–18, including minority…
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DistressedDistressed · 0% CAGR over 1y
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Computed from 5 filingsProvides live music entertainment for events, offering bands and musicians for weddings, corporate events and private parties, with booking and availability information through its website.
Serves couples planning weddings, corporate event organisers, and private party hosts booking live bands and musicians for events.
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StrongStrong
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Computed from 5 filingsSupplies corporate, promotional and workwear clothing including T‑shirts, polos, hoodies, jackets, PPE, headwear and bags. Provides garment branding services such as embroidery, DTF and screen…
Sells to businesses and organisations buying branded corporate clothing, promotional apparel and workwear, including employers needing PPE and uniforms, hospitality teams, sports groups, schools and…
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HealthyHealthy · Growing, Hiring · 9% CAGR over 4y
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Computed from 3 filingsPublishes online news coverage of professional boxing, including fight results, event previews, rankings, schedules, and opinion articles. Operates a website featuring ongoing match coverage,…
Serves consumers, mainly boxing fans and combat-sports followers, who follow professional boxing results, schedules, rankings, tickets, forums and fighter/promoter coverage online.
Financial Health
StableStable · Hiring · 61% CAGR over 2y
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Computed from 5 filingsProvides crisis communications and public relations consultancy for shipping, ports and offshore operators, including 24/7 incident media response, reputation management, regulatory media compliance…
Serves B2B clients in the international maritime sector, including shipping companies, port operators, offshore businesses and vessel managers subject to charterer, TMSA, DryBMS or US regulatory…
Financial Health
StrongStrong · Profitable, Growing, Hiring · 31% CAGR over 5y
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Computed from 5 filingsProvides consulting, training and advisory programmes focused on people analytics for HR leaders. Offers learning courses and a structured programme to help organisations build data‑driven HR…
Serves CHROs, people analytics leaders and senior HR executives in large and global organisations, including enterprise HR teams seeking data-driven HR cultures and people analytics capability.
Financial Health
HealthyHealthy · -67% CAGR over 4y
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Computed from 5 filingsProvides a software platform for managing data processing agreements and vendor data processors. Enables organisations to track DPAs, store agreements, obtain signatures, and notify customers of new…
Serves businesses acting as data processors or service providers under GDPR/CCPA, especially privacy, legal, compliance and vendor-management teams responsible for customer and supplier data…
Financial Health
WeakWeak · Hiring · 50% CAGR over 4y
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Computed from 4 filingsProvides event catering for private and corporate functions including weddings, parties, client dinners, conferences and office lunches. Designs and prepares bespoke menus, canapés and light bites,…
Serves private individuals planning parties, weddings and family occasions, plus businesses hosting meetings, launches, office parties and conferences in London, Hertfordshire and the Home Counties.
Financial Health
DistressedDistressed · -24% CAGR over 3y
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Computed from 4 filingsSupplies sports nutrition products and dietary supplements, including protein, performance and health supplements, through retail and partnership channels. Promotes a product range for athletes and…
Serves professional and amateur athletes, fitness enthusiasts and health-conscious consumers, alongside B2B retail and distribution partners in sports nutrition.
Financial Health
WeakWeak · -21% CAGR over 3y
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Key facts
About 6% of the trading cohort reports turnover above £5M (5 of 77 firms) — the rest sits below that revenue band.
9% of the cohort was incorporated since 2022 (7 firms), so a sizeable share is in its first few filing cycles.
Website publishing and measurement tools are common companions: 67.5% also run a content-management platform, while 55.8% run web analytics alongside the email tool.
Sector tags overlap, but Education & Training appears on 18.2% of companies running this email-marketing technology, followed by Travel & Hospitality at 14.3% and Media & Publishing at 13.0%.
PECR, UK GDPR and the Data Protection Act govern UK email marketing, with ICO guidance requiring specific consent for individuals unless the limited soft opt-in applies.
For B2B campaigns, the ICO distinguishes corporate subscribers from sole traders and some partnerships; UK GDPR still applies where personal data is processed, and opt-outs should be respected.
The UK digital ad market reached £40.5 billion in 2025, up 10% year-on-year, placing this email-marketing cohort inside a large buyer and compliance market.
What else do MailerLite users run?
Share of the 77 MailerLite-running UK companies where each technology was also detected. As of June 2026.
Who runs MailerLite 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
£496.9K
Median UK turnover
6.5%
Above £5M turnover
7
Incorporated since 2022
Verified directors — included in the file
Director names and roles for these 123 companies, alongside financials and websites, in one Excel + CSV file.
How MailerLite 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.
MailerLite is a trademark of its respective owner. Firmbase is not affiliated with, sponsored by, or endorsed by the trademark owner.
MailerLite elsewhere
Frequently asked questions
How many companies in London use MailerLite?
How is MailerLite usage detected?
What kinds of companies use MailerLite in London?
What do MailerLite users in London also run?
How fresh is this data?
Can I get contact details for these companies?
Buy all 123 companies as a spreadsheet.
One Excel/CSV file with company details, websites and key data — yours to download and use.