E-Commerce Companies Using Klaviyo in the UK: 780 Active Firms (2026)
E-commerce retailers using email automation in the UK sell online through owned storefronts and use onsite behaviour to personalise customer messaging.
Buying centres sit mostly in CRM, merchandising, performance marketing and web operations, rather than in a central IT procurement lane. Companies running this email automation stack tend to have transactional sites, first-party customer capture and enough repeat-purchase activity to justify lifecycle programmes. The buyer is usually a digital trading or retention team, often supported by an agency, with finance involved where the system is tied to owned-channel revenue attribution. Typical engagements look like recurring software spend plus implementation, template, segmentation and integration work, not a one-off campaign purchase.
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The UK adoption cohort covers 780 actively trading e-commerce retailers running this email automation platform. Within detected marketing automation for UK e-commerce, the same platform ranks first, at 45.9% of a category denominator of 1,701. Reported employment is 2,997 people, which points to a cohort weighted towards small operating teams rather than very large retailers. The registered-office skew is still southern but not solely London-based: London accounts for 25.0%, followed by the South East at 13.5%, the North West at 11.3%, the South West at 10.5%, and Yorkshire and The Humber at 9.1%.
Email automation in online retail sits close to consent, profiling and fulfilment, so procurement tends to involve marketing operations, web teams and whoever owns privacy assurance. The practical checks are usually prosaic: lawful capture of email permissions, clear suppression of unsubscribed contacts, controlled access to customer segments, and care over how behavioural events from the storefront are passed into messaging tools. Agency support can shorten implementation, but it also adds questions about credential sharing, template governance and who is accountable when customer data moves between the shopfront, analytics stack and campaign system.
Adoption appears to be pulled by retention economics rather than by novelty. Retailers with repeat-purchase categories tend to keep email automation close to merchandising and customer value analysis, while lower-frequency sellers may use it more narrowly for basket recovery and seasonal campaigns. The platform category has been bundling more onsite capture, segmentation and reporting into the same buying decision, which may reduce the number of separate tools used by smaller teams. At the same time, larger retailers appear more likely to demand clearer integration boundaries, agency oversight and evidence that owned-channel activity is not being over-credited.
Adoption by company size
Adoption of Klaviyo rises with company size across the trading UK e-commerce companies in this cohort. 0.9% of the 58,696 companies with under 10 employees run Klaviyo (508 detected). 10.3% of the 2,333 companies with 10–50 employees run Klaviyo (240 detected). 17.1% of the 158 companies with over 50 employees run Klaviyo (27 detected). That is a 16.2% gap between the over 50 employees and under 10 employees bands.
780
Active firms
2026
45.9%
Of detected Marketing automation share
UK e-commerce
6
Median headcount
Filed accounts
1,548
Verified contacts
Across this cohort
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Key facts
About 8% of the trading cohort reports turnover above £5M (63 of 780 firms) — the rest sits below that revenue band.
6% of the cohort was incorporated since 2022 (51 firms), so a sizeable share is in its first few filing cycles.
The email automation system accounts for 45.9% (780) of detected marketing automation among UK e-commerce retailers, ahead of the next system at 31.0% (527) within a 1,701-company denominator.
A hosted-commerce platform is detected alongside the email tool in 68.3% (533) of the cohort, pointing to a stack built around owned storefronts.
A web performance and security layer appears in 88.5% (690) of the cohort, so site delivery infrastructure is common across these retailers.
London accounts for 25.0% (195) of the cohort, followed by the South East at 13.5% (105) and the North West at 11.3% (88).
Sector tags overlap: Fashion & Retail appears on 39.2% (306), FMCG on 21.0% (164), and Wholesale & Distribution on 19.1% (149).
Marketing automation market share among UK E-Commerce
Share of the 1,701 UK E-Commerce with a detectable system. As of June 2026.
What else do Klaviyo-running E-Commerce run?
Share of the 780 Klaviyo-running UK companies where each technology was also detected. As of June 2026.
Where Klaviyo E-Commerce are, and how healthy they look
By region
By registered-office region; companies without a regional match count toward Rest of UK.
By financial health
From filed accounts; firms with fewer than two filings show as insufficient history.
6
Median headcount
£734.2K
Median UK turnover
8.1%
Above £5M turnover
51
Incorporated since 2022
1,548 verified decision-maker contacts
across these 780 companies, with emails available in Firmbase. Filter by role, seniority and stack.
Top UK E-Commerce using Klaviyo
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 filingsOperates department stores and an e‑commerce platform selling fashion, beauty and fragrance products, clothing, footwear, accessories, homeware and gifts from multiple brands, and provides in‑store…
Sells to consumers shopping online and in UK department stores for designer fashion, beauty, homeware, furniture, gifts, kidswear, menswear and womenswear, including loyalty customers and gift buyers.
Financial Health
StrongStrong · Growing, Hiring · 12% CAGR over 2y
Location
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Computed from 3 filingsOperates an online retail store selling cosmetics, skincare, haircare, make‑up, fragrances and beauty tools from multiple brands, alongside its own skincare line, with product discovery tools,…
Targets individual beauty consumers seeking clean skincare, make-up, hair, body, fragrance and wellness products online, including shoppers looking for personalised routines, treatments, gifts and…
Financial Health
StableStable · Hiring · 25% CAGR over 2y
Location
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Computed from 3 filingsDesigns and sells women's casual clothing and accessories through an online store, including hoodies, sweatshirts, knitwear, tops, bottoms, activewear and matching sets, with product ranges organised…
Sells direct to consumers, mainly women and students shopping online for trend-led casualwear, loungewear and seasonal outfits, with UK, US and EU store options plus worldwide shipping.
Financial Health
StrongStrong · Growing, Hiring · 47% CAGR over 2y
Location
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Computed from 2 filingsOperates an online and retail store selling nuts, seeds, dried and freeze‑dried fruit, health foods, snacks, grains, baking ingredients, vitamins and supplements, as well as plant-based products,…
Serves UK consumers shopping online or in stores for health foods, snacks, cupboard staples, vitamins and supplements, including customers following vegan, gluten-free, dairy-free, organic or…
Financial Health
HealthyHealthy · Profitable · 0% CAGR over 1y
Location
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Computed from 5 filingsDevelops and sells baby care and household products including disposable and reusable nappies, baby wipes, skincare items, and plant‑based cleaning products. Offers bundles and subscription delivery…
Sells direct to eco-conscious families, expectant parents and parents of babies, with subscriptions aimed at regular household buyers of baby and family essentials.
Financial Health
StrongStrong · Growing, Hiring · 10% CAGR over 4y
Location
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Computed from 3 filingsDevelops and sells nutritional supplements including omega‑3 fish oil and algae oils, marine and bovine collagen, vitamin D, magnesium and creatine. Products are offered as capsules, liquids and…
Sells primarily to health-conscious consumers buying supplements for general wellbeing, skin, immunity, joints, menopause, pregnancy, children, teens, vegan diets and men’s health, with secondary…
Financial Health
StrongStrong · Growing, Hiring · 22% CAGR over 2y
Location
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Computed from 5 filingsDevelops and sells superfood-based nutritional products including powdered blends, hydration mixes, wellness shots and capsules. Products are sold online and formulated with plant-based ingredients…
Sells direct to health-conscious consumers seeking everyday nutrition support, including shoppers interested in gut health, female health, immunity, energy, focus, sleep, skin health and hydration.
Financial Health
StrongStrong · Growing, Hiring · 110% CAGR over 4y
Location
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Computed from 4 filingsOperates an online retail store selling baby and nursery products from multiple brands, including car seats, pushchairs, cribs, nursery furniture, feeding equipment, baby clothing, toys, maternity…
Serves expectant parents, new parents, families with babies and young children, and gift buyers seeking premium baby, nursery, travel and childcare products through a consumer retail store.
Financial Health
StrongStrong · Hiring · 8% CAGR over 5y
Location
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Computed from 3 filingsDesigns and sells luxury clothing and accessories inspired by British country and equestrian style. Offers tweed tailoring, outerwear, casualwear, footwear, bags, and accessories for women, men, and…
Sells direct to consumers seeking premium British country, tailoring and equestrian styles, including women, men, children, riders, and shoppers buying home and gift items.
Financial Health
StrongStrong · Profitable, Growing, Hiring · 5% CAGR over 2y
Location
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Computed from 5 filingsDesigns and sells bamboo-based sleep products including mattresses, mattress toppers, pillows, duvets, bedding sets and bath textiles through an online store, along with children’s bedding and sleep…
Sells primarily to UK consumers and households shopping online for sleep and home textiles, including adults, parents buying kids’ and baby ranges, and gift buyers; also supports international…
Financial Health
StrongStrong · Growing, Hiring · 54% CAGR over 4y
Location
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Computed from 5 filingsOperates an online retail store selling beauty and skincare products, including cosmetics and related items. Also publishes content offering makeup techniques, style guidance and personal confidence…
Sells direct to consumers seeking beauty products and makeup, style and confidence advice, with international checkout options shown on the site.
Financial Health
HealthyHealthy · -4% CAGR over 4y
Location
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Computed from 5 filingsOperates retail record stores and an e‑commerce platform selling vinyl records, CDs, books, music merchandise and audio equipment. Hosts live music events in selected stores, some with venues and…
Serves consumers including music fans, vinyl and CD collectors, book buyers and gig-goers shopping online or in store for records, music-related books, merchandise, stereo gear and artist events.
Financial Health
StrongStrong · Growing, Hiring · 20% CAGR over 4y
Location
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Computed from 5 filingsOperates an online retail store selling women’s clothing and fashion accessories, including dresses, tops, knitwear, denim, coats, footwear, bags, and jewellery, with product collections, seasonal…
Sells to female consumers shopping online for fashion, including dresses, tops, denim, knitwear and accessories. Targets women seeking everyday, workwear, occasionwear and curve clothing across…
Financial Health
StrongStrong · Growing · 0% CAGR over 4y
Location
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Computed from 5 filingsOperates an online retail store selling skincare, haircare and cosmetic products, including cosmeceuticals, serums, sunscreens, supplements and beauty devices from third‑party brands, alongside…
Serves consumers seeking skincare, haircare, beauty and wellness products, including shoppers with specific skin types, skin conditions or concerns. Also addresses men’s skincare and beauty gift…
Financial Health
HealthyHealthy · Hiring · 4% CAGR over 4y
Location
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Computed from 3 filingsDevelops and sells branded sports nutrition and health supplements through an online store, including fat burners, protein powders, pre‑workout formulas, amino acids, supergreens, hydration products,…
Sells directly to fitness-focused consumers, gym users and athletes seeking products for weight loss, muscle gain, workout performance, hydration, recovery and general wellness through an online…
Financial Health
StrongStrong
Location
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Computed from 5 filingsProduces and sells organic skincare, haircare and body care products including cleansers, moisturisers, shampoos, deodorants and sun creams, alongside natural makeup and dietary supplements, offered…
Sells direct to consumers, particularly people with sensitive, dry, mature, oily or combination skin seeking organic, vegan and cruelty-free skincare, haircare, makeup, sun care and personal care…
Financial Health
HealthyHealthy · -4% CAGR over 4y
Location
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Computed from 5 filingsProduces and sells food products and dietary supplements, including collagen powders, bone broth, mayonnaise, sauces, and cooking oils such as avocado, olive and MCT oil. Products are sold online…
Sells primarily to health-conscious consumers seeking natural living, including shoppers following keto, paleo, carnivore, gluten-free, dairy-free or refined-sugar-free diets, and people focused on…
Financial Health
HealthyHealthy · -45% CAGR over 4y
Location
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Computed from 5 filingsDevelops and sells self‑tanning and skincare products, including tanning mousses, tan removers, extenders, facial tanners, instant bronzing products, and application accessories, supplied through an…
Sells primarily to consumers seeking at-home self-tanning, tan removal and skincare products, including regular fake-tan users, students, sensitive-skin shoppers and unisex beauty consumers; also has…
Financial Health
StrongStrong · Growing, Hiring · 34% CAGR over 4y
Location
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Computed from 5 filingsProduces and sells dry dog food formulated as an alternative to raw feeding, using ingredients such as chicken, turkey, trout, salmon and beef. Offers online ordering of food packs and samples, with…
Sells direct to UK dog owners, especially those seeking alternatives to raw feeding for picky dogs, puppies, senior dogs, or dogs with sensitive digestion.
Financial Health
StrongStrong · Growing, Hiring · 17% CAGR over 4y
Location
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Computed from 5 filingsOperates an online retail store selling dog and cat food, including dry and wet foods, treats, and oven‑baked snacks. Also sells pet supplements, herbal remedies, toys and accessories, and offers pet…
Sells primarily to UK dog and cat owners buying pet nutrition and related pet products online, with a secondary audience of retail stockists interested in carrying its range.
Financial Health
StrongStrong · Growing, Hiring · 5% CAGR over 4y
Location
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Computed from 5 filingsDesigns and sells menswear and womenswear clothing, including knitwear, shirts, trousers, outerwear, and denim. Produces seasonal and core collections focused on everyday garments and fabrics such as…
Sells direct to consumers seeking premium menswear and womenswear, particularly style-conscious adults looking for durable everyday wardrobe pieces across knitwear, shirting, trousers, denim and…
Financial Health
HealthyHealthy · Growing · 0% CAGR over 4y
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Computed from 5 filingsOperates an online and in‑store golf retail business selling equipment and apparel, including clubs, balls, shoes, bags, trolleys, GPS devices, and accessories. Also offers custom club fitting,…
Sells to individual golfers, including men, women and juniors, shopping online or in-store for golf gear, custom fittings and branded equipment.
Financial Health
StrongStrong · Hiring · 97% CAGR over 4y
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Computed from 5 filingsOperates an online store selling golf equipment and apparel, including clubs, balls, bags, shoes, clothing, gloves, trolleys and GPS devices. Also offers accessories and pre‑owned golf clubs from…
Serves UK-based golfers and golf enthusiasts shopping online, from casual players to regular club golfers seeking branded new and pre-owned golf gear, apparel and accessories.
Financial Health
HealthyHealthy · Hiring · 28% CAGR over 4y
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Computed from 4 filingsRetailer of running footwear, clothing and accessories through an online store and retail outlets. Sells running shoes, GPS watches, hydration gear, nutrition products and other equipment, and…
Serves B2C customers: recreational and competitive runners, trail runners and fitness consumers, including men and women seeking specialist running retail advice, gait analysis support and…
Financial Health
HealthyHealthy · Hiring · 50% CAGR over 3y
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Computed from 5 filingsDevelops and sells dietary supplements formulated for women's hormonal health, including products for menstrual cycles, fertility, perimenopause and menopause. Also operates a mobile app providing…
Sells direct to consumers seeking hormone wellbeing support, mainly women across life stages such as menstrual cycles, fertility, pregnancy, new motherhood, perimenopause, menopause and…
Financial Health
StrongStrong · Growing, Hiring · 57% CAGR over 4y
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Computed from 5 filingsDevelops and sells dermatology-led skincare products including cleansers, serums, moisturisers and sunscreens under the Dr Sam’s brand. Also operates a dermatology clinic providing consultations and…
Serves consumers seeking dermatology-led skincare routines, particularly adults with acne, rosacea, hyperpigmentation, redness, sensitivity, ageing concerns or other problem-skin needs.
Financial Health
StrongStrong · Growing, Hiring · 56% CAGR over 4y
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Computed from 5 filingsDevelops and sells skincare products formulated to support the skin microbiome, including cleansers, serums, creams, masks, oils and eye care products, as well as facial devices and routine-based…
Sells primarily to consumers of all ages and skin types seeking skincare for acne, ageing, dryness, redness, rosacea, pigmentation, puffiness and sensitive skin, with online shopping in the US, UK,…
Financial Health
StrongStrong · Hiring · 3% CAGR over 5y
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Computed from 5 filingsDesigns and sells men's and women's apparel including denim jeans, hoodies, sweatshirts, T‑shirts, jackets, trousers and accessories. Operates an online retail store offering seasonal collections,…
Serves B2C online shoppers, particularly men and women seeking casual clothing and wardrobe essentials; UK consumers are explicitly targeted through delivery promotions.
Financial Health
HealthyHealthy · Hiring · 21% CAGR over 4y
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Computed from 3 filingsProduces and sells pet food products including cold‑pressed dry dog food, steamed wet food, meat sausages, dental products and baked treats made from meat and vegetables. Offers nutrition products…
Sells to dog and cat owners seeking pet food and treats, with additional routes for breeders and retail stockists.
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HealthyHealthy · Growing · 0% CAGR over 2y
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Computed from 5 filingsProduces and sells natural dog treats, chews and complete pet foods, including meat sticks, training treats, pâté, toppers and protein-specific snacks. Products are sold online and to trade customers…
Serves UK dog owners shopping online, including puppy owners and buyers seeking single-protein options, plus trade customers such as pet retailers via a trade login.
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StrongStrong · Growing, Hiring · 13% CAGR over 4y
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Computed from 5 filingsDesigns and sells women’s clothing and accessories, including trousers, jeans, jumpsuits, dresses, knitwear, nightwear, and maternity‑friendly garments. Products are offered through an online retail…
Sells direct to consumers, primarily women including pregnant and postpartum shoppers, seeking comfortable everyday clothing and maternity-friendly wardrobe options.
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StrongStrong · Growing, Hiring · 53% CAGR over 5y
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Computed from 5 filingsDevelops and sells natural and organic personal care products including skin care, hair care, sun protection, body care, toiletries, make‑up and baby products, as well as essential oil blends and…
Sells direct to UK consumers seeking natural and organic beauty and personal care, including adults, men, teenagers, parents buying baby and child products, and people with sensitive skin or specific…
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HealthyHealthy · Hiring · 5% CAGR over 4y
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Computed from 5 filingsOperates an online retail store selling baby and nursery products, including pushchairs, prams, car seats, nursery furniture, bedding, feeding equipment, toys, travel cots, and safety accessories…
Sells directly to UK parents, expectant parents and families shopping online for babies and young children, including those furnishing nurseries or buying travel, car safety, feeding, bath and play…
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HealthyHealthy · -7% CAGR over 4y
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Computed from 2 filingsOperates an online retail store selling endurance sports nutrition products, including energy gels, drink mixes, electrolyte supplements, bars, and hydration products, alongside performance health…
Sells B2C to endurance athletes and active consumers seeking sports nutrition, hydration, wellness, apparel, gear and tech, with UK and international shipping options.
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StrongStrong · Growing · 9% CAGR over 1y
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Computed from 4 filingsDesigns and retails kitchen gadgets and small domestic appliances through an e‑commerce store, including air fryers, slow cookers, kettles, toasters, coffee makers, bread makers, and other home and…
Serves UK consumers and households shopping online for kitchen gadgets, small kitchen appliances and home essentials.
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StrongStrong
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Computed from 3 filingsOperates an online store and subscription service selling special‑edition books and book‑themed merchandise. Offers monthly and quarterly genre-based book subscription boxes, including fantasy,…
Serves consumer book lovers and collectors, especially fans of fantasy, romance, horror, science fiction and crime/mystery, buying subscriptions, exclusive editions and book-themed items.
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StrongStrong · Hiring · 55% CAGR over 2y
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Computed from 5 filingsDesigns and sells men’s and women’s footwear including handmade boots, brogues, sneakers and shoes through an online store. Also offers accessories such as socks, belts and bags, along with shoe care…
Serves consumers shopping for men’s and women’s footwear, accessories and gifts, including buyers of boots, brogues, sneakers, outdoor shoes and wedding footwear packages.
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StrongStrong · Growing, Hiring · 69% CAGR over 4y
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Computed from 5 filingsProduces and sells dog treats and snacks including training rewards, dental chews, bites and bars made from natural ingredients. Supplies products through an online shop and on a wholesale basis to…
Sells to dog owners and pet parents buying online, alongside wholesale and retail partners stocking dog treats and related pet products.
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StrongStrong · Growing, Hiring · 53% CAGR over 4y
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Computed from 5 filingsDevelops and sells cosmetic and beauty products including foundations, concealers, powders, lip products, and makeup tools. Products are dermatologically tested, vegan and cruelty‑free, and sold…
Sells direct to beauty consumers seeking premium vegan, cruelty-free and dermatologically tested cosmetics, including shoppers who prioritise paraben-free formulas and ethical certification.
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StrongStrong · Growing, Hiring · 3% CAGR over 4y
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Computed from 3 filingsOperates an online retail store selling hair care, skincare and beauty products, including shampoos, conditioners, styling gels, hair extensions, cosmetics, perfumes and grooming accessories from…
Sells online to B2C shoppers seeking Afro-Caribbean hair, skin and beauty ranges, including adults, men and parents buying children’s hair care, grooming, cosmetics and related grocery items.
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Computed from 5 filingsRetailer of kitchen appliances and fitted kitchens, selling products such as ovens, hobs, refrigerators, dishwashers, laundry appliances, sinks and taps. Operates an online store and showroom and…
Serves UK consumers and homeowners buying kitchen appliances or fitted kitchens, plus trade customers needing appliance and kitchen supply accounts.
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Computed from 2 filingsOperates an online retail store selling clothing and accessories for women, men, and children. Product ranges include T‑shirts, hoodies, sweatshirts, knitwear, outerwear, shorts, trousers, dresses,…
Targets online retail consumers, including women, men and parents buying children’s clothing, casualwear and accessories; UK shoppers are specifically addressed through free shipping thresholds.
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StrongStrong · Hiring · 60% CAGR over 1y
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Computed from 5 filingsOperates an online retail store selling men’s and women’s clothing, including chinos, trousers, shirts, jackets, dresses and accessories. Offers branded apparel collections and seasonal styles…
Sells directly to UK retail consumers shopping online for men’s and women’s casual, office and everyday clothing, especially chinos, khakis, trousers, tops, outerwear and accessories.
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StrongStrong · Hiring · 15% CAGR over 5y
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Computed from 3 filingsOperates an e‑commerce store selling alcoholic beverages including wine, champagne, whisky, gin, beer and spirits. Offers mixed cases, gift sets and individual bottles for online purchase and home…
Serves adult consumers buying alcoholic drinks online, including wine, champagne, gin, whisky, beer and spirits shoppers, as well as gift buyers seeking drinks for home delivery.
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Computed from 3 filingsDevelops and sells hair care products and accessories designed for curly hair, including shampoos, conditioners, styling creams and treatments, as well as microfibre towels, satin sleep turbans,…
Sells to consumers with wavy, curly and coily hair, including adults, children and men, plus gift buyers seeking curl-care products and accessories.
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StrongStrong · Hiring · 51% CAGR over 2y
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Computed from 3 filingsOnline wine merchant selling curated wines including red, white, sparkling and fortified varieties. Offers a monthly wine subscription with selected bottles, tasting guides, producer information, and…
Serves UK consumers and wine drinkers, including online shoppers and subscription customers who want to explore wines and develop their understanding of wine.
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StrongStrong · Growing, Hiring · 32% CAGR over 2y
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Computed from 5 filingsProduces and sells dietary supplements and natural health products, including vitamins, minerals, herbal extracts, probiotics, essential oils, and personal care items such as skin, body, and hair…
Sells primarily to health-conscious consumers and online shoppers seeking wellness, nutrition, beauty, personal care and family health products, including segments focused on children’s, men’s and…
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Financial sub-scores
Computed from 5 filingsOperates an online retail store selling vaping products, including e‑liids, nicotine salts, vape kits, pod systems, refill pods, coils, batteries, chargers, and related vaping accessories from…
Sells primarily to UK consumers aged 18+ who vape or are switching from smoking, including online buyers of e-liquids, nic salts, pod kits and vape accessories.
Financial Health
StrongStrong · Hiring · 112% CAGR over 3y
Location
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Financial sub-scores
Computed from 3 filingsDesigns and sells men’s and women’s clothing, sportswear and accessories, including golf, ski and tennis apparel, footwear, bags and hats. Products are offered through an online retail store and…
Sells direct to consumers shopping for men’s and women’s fashion, footwear and accessories, including golfers, racket-sport players and ski apparel buyers via its online store.
Financial Health
StrongStrong · Hiring · 13% CAGR over 2y
Location
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Showing 49 of 780 — +731 more with verified decision-maker contacts, live data, and CRM sync.
Unlock all 780 leads
Showing 49 of 780 — +731 more with verified decision-maker contacts, live data, and CRM sync.
How Klaviyo 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. e-commerce companies are identified using Firmbase's semantic classification of company activity, built from filings, websites and registered SIC codes rather than SIC codes alone. The detected counts and share figures on this page are computed within that sector cohort, so "share" always means share of e-commerce companies with a detectable system — not of all UK companies.
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.
Klaviyo is a trademark of its respective owner. Firmbase is not affiliated with, sponsored by, or endorsed by the trademark owner.
UK E-Commerce by Marketing automation
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Frequently asked questions
How many UK e-commerce companies use Klaviyo?
What share of UK e-commerce companies run Klaviyo?
How is Klaviyo usage detected?
What size e-commerce companies use Klaviyo in the UK?
What do Klaviyo-running e-commerce companies also run?
Can I get contact details for these companies?
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