B2C Companies Using Klaviyo in the UK: 982 Active Firms (2026)
B2C companies using email and customer marketing automation sell directly to consumers across the UK online retail and services market.
Lifecycle marketing platforms sit with ecommerce, CRM and retention teams rather than general IT. For direct-to-consumer operators, the job is to turn site behaviour, purchase history and consented contact details into segmented campaigns that support repeat purchase and reactivation. Adoption usually signals a business with enough owned-customer volume to justify integrations across storefront, analytics, consent management and performance marketing. Engagements tend to be operational as much as technical: teams need event tracking, template governance, suppression rules and reporting loops, not just a place to send newsletters.
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UK adoption is concentrated rather than universal: 982 companies are actively trading in this cohort, and reported employment totals 4,434 people. Among detected marketing-automation systems in this consumer sector, the system ranks third at 9.3% on a denominator of 10,610. The regional pattern is London-weighted but not London-only, with 25.5% registered in London, 14.1% in the South East, 10.4% in the South West, 9.8% in the North West, and 8.1% in Yorkshire and The Humber. That spread fits a direct-sales stack used by retailers and consumer-service operators rather than a narrow software cluster.
Permission management matters more than software preference in this stack. Companies running customer-marketing automation need a defensible route from sign-up to campaign send: consent capture, suppression lists, unsubscribe handling, cookie preferences, and processor terms all sit close to the revenue workflow. Procurement therefore tends to involve ecommerce, CRM, marketing operations and legal or finance teams, rather than a single channel marketer choosing a mailing tool. The vendor layer is also interconnected: hosted storefronts, analytics tags, payment services and content systems shape what can be synchronised, segmented and attributed.
Adoption appears tied to the continued professionalisation of retention marketing among direct-to-consumer operators. Firms with an established ecommerce stack tend to value tighter audience segmentation, cleaner consent handling and better feedback from campaign activity into merchandising or service planning. Migration pressure may come from bundled commerce suites and from agencies standardising around fewer marketing tools, while smaller merchants may stay with lighter email systems until repeat-purchase economics justify a broader lifecycle setup. The cohort therefore looks more like a selective upgrade market than a universal default.
Adoption by company size
Adoption of Klaviyo rises with company size across the trading UK B2C companies in this cohort. 1.1% of the 54,825 companies with under 10 employees run Klaviyo (613 detected). 1.1% of the 26,843 companies with 10–50 employees run Klaviyo (308 detected). 1.9% of the 3,060 companies with over 50 employees run Klaviyo (57 detected). That is a 0.8% gap between the over 50 employees and under 10 employees bands.
982
Active firms
2026
9.3%
Of detected Marketing automation share
UK B2C
7
Median headcount
Filed accounts
2,010
Verified contacts
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Key facts
About 9% of the trading cohort reports turnover above £5M (90 of 982 firms) — the rest sits below that revenue band.
7% of the cohort was incorporated since 2022 (70 firms), so a sizeable share is in its first few filing cycles.
Within detectable marketing automation systems used by UK B2C firms, the system ranks third by detected share at 9.3% (982 of 10,610), behind two larger systems at 53.9% and 18.8%.
London accounts for 25.5% (250) of UK B2C firms running the system, followed by the South East at 14.1% (138) and the South West at 10.4% (102).
E-commerce is the main sector tag at 71.0% (697), with Fashion & Retail at 34.7% (341) and FMCG at 20.8% (204); tags overlap, so these shares are not additive.
Stack co-occurrence points to ecommerce and retention-led operations: 83.1% (816) also run a web infrastructure layer, 60.1% (590) an ecommerce platform and 54.9% (539) tag management.
Marketing automation market share among UK B2C
Share of the 10,610 UK B2C with a detectable system. As of June 2026.
What else do Klaviyo-running B2C run?
Share of the 982 Klaviyo-running UK companies where each technology was also detected. As of June 2026.
Where Klaviyo B2C 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.
7
Median headcount
£716.7K
Median UK turnover
9.2%
Above £5M turnover
70
Incorporated since 2022
2,010 verified decision-maker contacts
across these 982 companies, with emails available in Firmbase. Filter by role, seniority and stack.
Top UK B2C 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 5 filingsSells powdered dietary supplement drink formulated with vitamins, minerals, botanical extracts and probiotic cultures. Product is marketed as a daily nutrition mix to support energy, digestion and…
Sells direct to health-conscious UK consumers and athletes seeking daily nutrition support, including people focused on energy, immunity, digestion, performance and recovery.
Financial Health
StrongStrong
Location
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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
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 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 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 5 filingsDesigns and retails women's designer fashion, including dresses, coats, knitwear, trousers, bags, shoes and jewellery. Sells seasonal collections and accessories through its official online store and…
Targets B2C luxury womenswear customers shopping for designer clothing, bags, shoes and accessories via the official online store and physical boutiques.
Financial Health
StableStable · 0% 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 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 3 filingsSupplies kitchen and bathroom worktops and countertops through an online store. Offers wooden, laminate, compact laminate, and solid surface worktops, with custom sizing options, samples,…
Sells to UK homeowners, DIY renovators and kitchen or bathroom refurbishment buyers seeking made-to-size surfaces, samples and related accessories for residential projects.
Financial Health
HealthyHealthy · Growing, Hiring · 6% 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 filingsOperates an online platform that compares and books travel services including car hire, hotels, airport parking, airport lounges and attractions. Aggregates offers from rental companies and travel…
Serves leisure and business travellers, including UK airport users, international car hire customers, families, city visitors and budget-conscious holidaymakers comparing travel options online.
Financial Health
HealthyHealthy · Hiring · 51% CAGR over 2y
Location
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Computed from 5 filingsDevelops and sells skincare and beauty products through an online store, including cleansers, moisturisers, serums, eye masks, targeted treatments, body care items and beauty supplements designed to…
Sells direct to consumers, mainly skincare shoppers with concerns such as ageing, menopause-related changes, dryness, dullness, sensitivity, blemishes and pigmentation, including a dedicated range…
Financial Health
StableStable
Location
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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…
Financial Health
HealthyHealthy · -7% CAGR over 4y
Location
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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.
Financial Health
StrongStrong · Hiring · 55% CAGR over 2y
Location
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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.
Financial Health
StrongStrong · Hiring · 60% CAGR over 1y
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 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.
Financial Health
StrongStrong
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 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
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 filingsSells refurbished smartphones and tablets through an online store, including Apple iPhone and Samsung Galaxy devices. Sources used devices, performs multi‑point testing and refurbishment, and resells…
Sells to UK consumers looking to buy refurbished iPhones, Samsung phones, tablets and accessories, and to individuals wanting to sell used mobile devices online.
Financial Health
StrongStrong · Hiring · 22% CAGR over 4y
Location
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Computed from 5 filingsOnline retailer of outdoor and indoor plants, including bedding plants, bulbs, shrubs, houseplants, fruit and vegetable plants, and herbs. Also sells gardening supplies such as compost, pots, plant…
Serves UK consumers buying plants for gardens, patios, indoor spaces and gifts, including home gardeners, houseplant buyers and people growing fruit, vegetables or herbs at home.
Financial Health
StrongStrong
Location
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Computed from 5 filingsOperates an online retail store selling baby and nursery products, including pushchairs, prams, travel systems, car seats, nursery furniture, feeding equipment, toys, and baby accessories, with…
Serves UK consumers, primarily expectant parents and families with babies or young children, shopping online for prams, pushchairs, car seats, nursery furniture, feeding, changing and play products.
Financial Health
HealthyHealthy · Hiring · 8% CAGR over 4y
Location
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Computed from 3 filingsOperates an online retail store selling athleisure and outdoor apparel, footwear, and accessories for men, women and juniors, including hoodies, jackets, trainers, bags and supplements from brands…
Sells to consumers shopping for athleisure, outdoor and sportswear clothing, footwear and accessories, including men, women and juniors, through an online retail store.
Financial Health
StrongStrong · Growing, Hiring · 41% CAGR over 2y
Location
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Computed from 5 filingsRetailer of garden and outdoor furniture through an online store and showroom. Offers teak, rattan and metal dining sets, benches, gazebos, parasols, outdoor kitchens, BBQs, fire pits, and related…
Sells primarily to UK consumers and homeowners buying garden, conservatory and outdoor living furniture for home and garden spaces. Also targets price-sensitive groups through student, apprentice and…
Financial Health
HealthyHealthy · 0% CAGR over 4y
Location
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Computed from 3 filingsProvides natural dietary supplements formulated by pharmacists, including products for gut health, sleep, mood, immunity and joint support. Also offers online health assessments, pharmacist…
Serves consumers seeking natural supplements and pharmacist advice for gut, sleep, mood, immunity, joints, menopause, sexual health, pain, prostate and IBS concerns, including subscribers and parents…
Financial Health
StrongStrong · Growing, Hiring · 82% CAGR over 2y
Location
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Computed from 4 filingsOnline retailer of beauty and personal care products, selling skincare, haircare and body care items including face masks, hair masks, shampoos, conditioners, serums, scrubs, lip care products and…
Sells direct to consumers buying beauty, skincare, haircare, bodycare and gift products, including women, men, teenagers and gift shoppers, with online purchasing and international delivery options.
Financial Health
StrongStrong · Profitable, Growing, Hiring · 57% CAGR over 3y
Location
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Computed from 5 filingsProduces and sells fresh cream celebration cakes through an online store and retail outlets, offering flavours such as chocolate, fruit, Oreo and Biscoff, plus photo, wedding and children's cakes,…
Sells to UK consumers ordering fresh cream cakes for birthdays, weddings, children’s parties and other celebrations, including customers seeking eggless options and home delivery.
Financial Health
StrongStrong · Growing, Hiring · 40% CAGR over 4y
Location
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Computed from 3 filingsDesigns and retails men’s clothing and accessories through an online store and retail outlets, including tracksuits, T‑shirts, polo shirts, jackets, knitwear, trousers, footwear, bags and hats, along…
Targets UK-based fashion consumers, primarily men, seeking designer streetwear, terrace wear and smart-casual apparel, with ranges also aimed at juniors and women.
Financial Health
HealthyHealthy · -2% CAGR over 2y
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 4 filingsProvides pet insurance policies covering cats, dogs, horses, rabbits and exotic animals, with adjustable coverage levels. Also offers insurance products for pet-related businesses, including dog…
Serves UK pet owners with cats, dogs, horses, rabbits, birds, reptiles and exotic pets, plus pet-related businesses such as dog walkers, groomers, sitters, trainers, pet taxis and home boarders.
Financial Health
StrongStrong · Hiring · 13% CAGR over 3y
Location
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Computed from 5 filingsOperates health clubs offering gym facilities, swimming pools, group fitness classes and spin studios. Provides membership-based fitness programmes, personalised exercise planning, wellness services,…
Targets individual consumers rather than businesses, especially adults seeking a community-based health club membership tailored to different ages, fitness levels, wellbeing needs and personal goals.
Financial Health
HealthyHealthy · Hiring · 3% CAGR over 4y
Location
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Computed from 5 filingsDevelops and sells argan oil–based hair care, styling, and body care products, including shampoos, conditioners, treatments, masks, fragrances, and tools, distributed through e‑commerce platforms and…
Sells to UK consumers buying premium hair, body and fragrance products online, and to salon professionals seeking retail and professional haircare ranges for client services.
Financial Health
StrongStrong
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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 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
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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
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Computed from 5 filingsDesigns and distributes hairbrushes and hair care tools, including detangling brushes, styling and blow‑dry brushes, scalp massagers and combs, along with detangling sprays and grooming brushes for…
Serves B2C shoppers with varied hair types and hair concerns, including adults, parents buying for children, and pet owners seeking cat and dog grooming products.
Financial Health
HealthyHealthy · Hiring · 7% CAGR over 4y
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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
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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
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Computed from 5 filingsDevelops and sells hair care products focused on curly, wavy and coily hair, including shampoos, conditioners, styling gels, creams, mousses, hairsprays and serums, along with bundled haircare kits…
Sells direct to consumers seeking haircare for wavy, curly and coily hair types, including shoppers buying routines and kits for frizz, scalp and curl needs.
Financial Health
StrongStrong · Growing, Hiring · 35% CAGR over 4y
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Computed from 3 filingsProduces and sells ready‑to‑heat prepared meals available for online order and delivery. Offers meal‑prep style dishes designed to be reheated at home, providing pre‑portioned cooked meals for…
Targets health-conscious consumers, busy individuals and households seeking convenient fresh meal-prep options that save time while fitting taste and wellness priorities.
Financial Health
StrongStrong · Growing, Hiring · 141% CAGR over 3y
Location
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Computed from 5 filingsOperates an online retail store selling sporting goods and official club merchandise, including rugby, football and netball apparel, footwear, balls and teamwear. Also offers personalised sports…
Serves consumers and sports fans buying official merchandise for rugby league, rugby union, football, netball and ice hockey clubs, with ranges for men, women and children.
Financial Health
StrongStrong · Growing, Hiring · 16% CAGR over 4y
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Computed from 5 filingsRetailer of electronic cigarettes, vape kits, prefilled pod systems and e‑liquids, including nicotine salt and shortfill products. Also sells replacement pods, coils, batteries, and related vaping…
Serves adult consumers in the UK who buy vaping products, including e-cigarette users seeking e-liquids, nicotine salts, vape kits, prefilled pod kits, coils, batteries and accessories online or…
Financial Health
HealthyHealthy · Hiring · 12% CAGR over 4y
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Computed from 5 filingsDesigns and sells home and garden furniture through an online retail store, including sofas, beds, dining tables and chairs, wardrobes, garden dining sets, rattan furniture, lighting, rugs, and home…
Sells to B2C consumers and homeowners furnishing modern homes, gardens and home offices, including online shoppers buying dining, living room, bedroom, hallway, bathroom and outdoor ranges.
Financial Health
StrongStrong · Growing, Hiring · 4% CAGR over 4y
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Computed from 5 filingsDesigns and sells women’s clothing through an online retail store, specialising in knitwear and soft wardrobe pieces including cashmere sweaters, cardigans, dresses, tops, trousers, outerwear, and…
Sells directly to consumers, primarily women shopping for contemporary knitwear, dresses and wardrobe essentials online. Serves retail fashion customers in the UK and international markets through…
Financial Health
WeakWeak · -11% CAGR over 4y
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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 4 filingsDesigns and sells kitchen and bathroom fixtures and fittings, including taps, sinks, basins, showers, baths, toilets, mirrors, cabinet handles and accessories. Offers products for kitchens,…
Sells to UK homeowners and renovators shopping for kitchen, bathroom, utility and outdoor fixtures, alongside trade account customers buying for residential interiors and renovation projects.
Financial Health
HealthyHealthy · Hiring · 76% CAGR over 3y
Location
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Computed from 5 filingsProvides a subscription fitness app offering personalised workout programmes, bulking and cutting plans, nutrition guidance, and progress tracking, helping users follow structured gym training plans…
Sells to B2C fitness consumers, especially men and gym-goers seeking structured support for muscle gain, fat loss, strength improvement, and body-composition goals.
Financial Health
StrongStrong · Growing, Hiring · 41% CAGR over 4y
Location
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Computed from 5 filingsOperates an online retail store selling socks, hosiery, underwear, slippers and clothing accessories for men, women and children, including multipack socks, thermal wear, hats, gloves and gift items,…
Serves online retail consumers, including men, women, parents buying for children, and gift shoppers seeking everyday, work, leisure and cold-weather socks and accessories.
Financial Health
StrongStrong · Growing, Hiring · 9% CAGR over 4y
Location
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Computed from 4 filingsProduces and sells CBD‑infused beverages, CBD oils, gummies, and magnesium-based drinks and powders. Products are marketed as alcohol alternatives and wellness supplements and are sold online…
Sells directly to consumers in the UK seeking alcohol alternatives and wellness products, including CBD drinks, oils, gummies and magnesium drinks. Targets health-conscious adults looking for…
Financial Health
StrongStrong · Hiring · 156% CAGR over 4y
Location
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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. B2C 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 B2C 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 B2C by Marketing automation
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Frequently asked questions
How many UK B2C companies use Klaviyo?
What share of UK B2C companies run Klaviyo?
How is Klaviyo usage detected?
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