Companies Using Klaviyo in Manchester: 54 Active Firms (2026)
Manchester companies running email-marketing technology use consent-led email and SMS flows for ecommerce, direct marketing and customer retention.
Adoption tends to sit with trading businesses that have already moved beyond one-off campaign sends into lifecycle messaging, segmentation and attribution. The buying centre is usually ecommerce, CRM or performance marketing rather than central IT, although finance often matters once email, SMS and onsite conversion tooling are tied to revenue reporting. In Manchester, companies running this email-marketing stack are most often online retailers, consumer product operators and direct-to-consumer brands with repeat-purchase economics. The presence of the stack usually signals a budget for paid acquisition, a named owner for customer retention, and enough transaction volume to justify testing flows rather than sending newsletters by hand.
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Manchester has 54 actively trading companies running this email-marketing technology. Reported employment across the cohort is 486 people, which points to a user base weighted towards smaller operating teams rather than large enterprise marketing departments. The adoption pattern is consumer-facing: e-commerce accounts for 64.8% of the cohort, while fashion and retail account for 33.3% and FMCG for 27.8%; wholesale and distribution also appears at 22.2%, reflecting firms that combine trade sales with direct digital channels. The local picture is therefore less about software producers and more about merchants, brand owners and agencies using owned channels to reduce dependence on paid media.
Email and SMS marketing sits under PECR, UK GDPR and the Data Protection Act, so consent, sender identification and unsubscribe handling are not back-office details. ICO guidance treats individuals differently from corporate bodies: messages to companies and public bodies have more room, while sole traders and some partnerships are treated like individuals. The soft opt-in matters for ecommerce and repeat-purchase models, but only where the earlier relationship and product similarity tests are met. Cookie-based profiling adds a second layer of compliance, especially where onsite behaviour is joined to personal data for segmentation or behavioural advertising.
Adoption appears likely to become more selective as customer-acquisition costs keep pressure on merchant margins. Firms already running this stack tend to value retention workflows, loyalty messaging and consented audience segments, but many still look operationally lean, with marketing ownership sitting close to trading, merchandising or founder-led management. Procurement is likely to ask more questions about data residency, consent evidence and integration with commerce platforms. Consolidation may also narrow the vendor choices around email, SMS, onsite personalisation and retail media, leaving Manchester users to balance specialist retention tools against broader marketing suites.
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 Klaviyo rises with company size across the trading companies in this cohort. 0% of the 89,028 companies with under 10 employees run Klaviyo (39 detected). 0.3% of the 3,823 companies with 10–50 employees run Klaviyo (12 detected). 0.2% of the 439 companies with over 50 employees run Klaviyo (1 detected). That is a 0.2% gap between the over 50 employees and under 10 employees bands.
54
Active firms
2026
5
Above £5M turnover
Trading firms
6
Median headcount
Filed accounts
105
Verified directors
Across this cohort
Top companies using Klaviyo in Manchester
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 filingsDesigns and sells fashion footwear including Mary Janes, platform boots, trainers, heels and flats through an online retail store. Also offers accessories such as bags, jewellery, socks, tights and…
Targets fashion-conscious consumers, mainly women plus a men’s range, seeking alternative, goth, emo, kawaii, Y2K and rave styles; includes students through discounting and pop-culture collaboration…
Financial Health
StrongStrong · Hiring · 22% CAGR over 4y
Location
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Computed from 5 filingsOnline retailer of pet care products, primarily for dogs, including food, treats, supplements, dental care items, grooming products, cleaning products, and travel and feeding accessories. Also offers…
Sells to pet owners, especially dog owners, buying direct online, with some ranges for cat owners. Also serves wholesale trade buyers seeking pet care ranges for resale.
Financial Health
HealthyHealthy · Hiring · 41% CAGR over 4y
Location
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Computed from 5 filingsOnline retailer of wines and beers formulated or selected to be lower in calories, sugar and carbohydrates. Sells bottled wines, mixed cases and beer through an e‑commerce platform, including vegan,…
Sells to UK adult consumers seeking lower-calorie, low-sugar alcoholic drinks, including wine and beer buyers with keto, vegan, gluten-free or organic dietary preferences.
Financial Health
StrongStrong · Hiring · 9% CAGR over 4y
Location
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Computed from 3 filingsDesigns, manufactures and sells handmade mattresses, including pocket‑sprung, natural fibre and latex models, alongside bed bases, headboards, mattress toppers and bedding. Products are sold online…
Sells direct to UK consumers shopping for premium beds, mattresses, bedding and sleep accessories, including buyers seeking specific sizes, comfort levels, natural materials, heavy-sleeper support,…
Financial Health
StableStable · -13% CAGR over 2y
Location
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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.
Financial Health
StrongStrong
Location
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Computed from 3 filingsSells home textiles and bedding products through an online store, including bed sheet sets, pillows, pillowcases, duvet covers, blankets, rugs, towels, mattress protectors, and related home and bath…
Serves B2C online shoppers and households seeking affordable home textiles and soft furnishings, including bedding, pillows, bath linens, rugs and kitchen accessories for everyday domestic use.
Financial Health
StrongStrong · 2% CAGR over 2y
Location
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Computed from 5 filingsRetailer of luxury watches, diamonds and fine jewellery, offering timepieces from brands such as Rolex, Patek Philippe and Cartier. Sells diamond pieces, jewellery and accessories, and provides watch…
Serves consumers, couples and watch collectors seeking luxury watches, diamonds, jewellery and accessories, with an emphasis on buyers in Manchester and customers looking to buy or sell premium…
Financial Health
HealthyHealthy · -3% CAGR over 6y
Location
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Computed from 3 filingsProvides vehicle breakdown cover memberships including 24/7 roadside assistance, home start, local recovery, and onward travel. Offers plans for cars, electric and hybrid vehicles, motorbikes, vans,…
Serves UK motorists, including daily commuters and occasional drivers, with car, EV, hybrid, motorbike and van needs, alongside businesses seeking vehicle breakdown cover for their drivers or fleets.
Financial Health
StableStable · Hiring · 63% CAGR over 2y
Location
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Computed from 5 filingsSupplies vaping products including disposable e‑cigarettes, refillable vape devices, e‑liquid pods and nicotine e‑liquids. Sells branded vape hardware and flavoured pods through an online store and…
Targets adult consumers who vape or are transitioning from smoking, including users of disposable, pod-based and nicotine vaping products buying through an online retail store.
Financial Health
StableStable · Hiring · 57% CAGR over 4y
Location
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Computed from 2 filingsOperates an online retail shop selling vaping products including disposable vapes, pod kits, e‑liquids, nicotine salts, prefilled pods, coils, and accessories. Also supplies branded vape devices and…
Serves UK adult consumers buying vaping products online, including users of disposable vapes, pod kits, e-liquids and nicotine salts; also lists a wholesale category for trade buyers.
Financial Health
StrongStrong · Hiring · 20% CAGR over 1y
Location
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Computed from 3 filingsOperates a wholesale clothing platform supplying boutiques with women’s fashion including dresses, tops, knitwear, jackets and accessories, as well as bridesmaid and occasionwear in regular and plus…
Sells B2B to fashion boutiques and retailers seeking wholesale occasionwear, bridesmaidwear, everyday womenswear, accessories and kidswear, including regular and plus-size ranges.
Financial Health
HealthyHealthy · 0% CAGR over 2y
Location
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Computed from 5 filingsOnline retailer of organic teas, including loose‑leaf, matcha and packaged tea bags. Sells blended and single‑origin teas, tea gift sets, teaware and accessories, and offers subscription tea clubs…
Serves online consumers buying organic tea, teaware, gifts and subscriptions, plus wholesale buyers in hospitality, foodservice and retail seeking tea products.
Financial Health
WeakWeak · 0% CAGR over 4y
Location
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Computed from 5 filingsSells bubble tea and boba making kits through an online store. Products include starter and refill kits, drink flavourings, tapioca pearls, toppings and accessories, plus customisable kits and gift…
Sells to consumers in the UK and EU, including bubble tea enthusiasts, first-time home makers, gift buyers, and people planning birthdays, parties or events.
Financial Health
StableStable
Location
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Computed from 3 filingsDesigns and sells greeting cards and stationery, including birthday, seasonal, and occasion cards. Also retails gift wrap, gift bags, notebooks, mugs, homeware, jewellery, and small gift items…
Serves consumers buying greeting cards, stationery and small gifts online, with a separate trade channel for retailers and other wholesale buyers.
Financial Health
WeakWeak · Hiring · 10% CAGR over 2y
Location
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Computed from 3 filingsOperates an online retail store supplying tiling, bathroom and building products. Sells wall and floor tiles, baths, showers, toilets, plumbing and heating components, paints, lighting, and related…
Serves trade professionals such as tilers, plumbers, builders and decorators, alongside DIY homeowners and renovators undertaking home improvement or bathroom projects.
Financial Health
HealthyHealthy · 0% CAGR over 2y
Location
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Computed from 5 filingsManufactures and supplies paints and coatings including decorative emulsions, primers, undercoats, floor and exterior paints, rust converters, and water‑based coatings. Sells products online and…
Sells to DIY consumers, homeowners, professional decorators, industrial users and trade stockists seeking decorative, exterior, floor and specialist coatings via online sales and local stockists.
Financial Health
StableStable
Location
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Computed from 5 filingsOperates an online retail store selling porcelain wall and floor tiles for bathrooms, kitchens and other interiors, including patterned, stone‑effect and wood‑effect designs, along with tiling…
Serves homeowners and DIY consumers renovating bathrooms, kitchens, living areas and outdoor spaces, alongside trade buyers such as tilers, builders and interior designers.
Financial Health
StrongStrong · Growing, Hiring · 10% CAGR over 4y
Location
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Computed from 5 filingsDesigns and sells handmade mattresses, including pocket‑sprung, natural fibre and latex models, alongside bed bases, headboards, mattress toppers and bedding. Operates an online retail store and…
Sells primarily to UK consumers seeking premium handmade mattresses, beds and bedding, including buyers shopping by size, firmness and sleep needs such as heavier sleepers, plus customers wanting…
Financial Health
StrongStrong
Location
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Computed from 5 filingsOnline retailer supplying cable ties, zip ties and tie wraps in various sizes, colours and materials. Also sells cable management products, tapes, fasteners, drill bits, heat shrink tubing, tools,…
Sells to trade buyers and bulk purchasers needing cable ties, tapes, fixings and cable management supplies, including telecoms, scaffolding, gardening, solar, agriculture, events and hospitality…
Financial Health
StableStable · Hiring · 37% CAGR over 4y
Location
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Operates an online retail store selling women’s fashion, including dresses, tops, jumpsuits, knitwear, coats, trousers, skirts and accessories, with collections for occasions such as party, evening,…
Sells direct to consumers, primarily women shopping online for fashion clothing, dresses and occasionwear, including wedding guests, partygoers, bridesmaids and prom customers.
Financial Health
N/AN/A
Location
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Computed from 5 filingsOperates a retail store and e‑commerce site selling baby and nursery products, including prams, pushchairs, car seats, nursery furniture, bedding, feeding items, and travel accessories, offering…
Sells directly to consumers, especially expectant parents and families with babies and young children, shopping for prams, car seats, nursery furniture, feeding, bathing and travel products,…
Financial Health
WeakWeak
Location
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Computed from 5 filingsProduces and sells refillable, plant‑based personal care and home fragrance products, including soaps, shampoos, conditioners, lotions, bath salts, candles, diffusers and skincare items, supplied…
Sells to consumers seeking refillable, plant-based personal care, hair care, home fragrance, soaps, candles and gifts, especially sustainability-minded shoppers using online subscriptions, refills or…
Financial Health
StableStable · 0% CAGR over 4y
Location
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Computed from 5 filingsDesigns, manufactures and sells luxury menswear, specialising in coats, jackets and outerwear made in England. Operates an online retail store offering garments including knitwear, shirts, rainwear,…
Sells direct to consumers seeking premium British-made menswear, especially outerwear, coats, jackets, knitwear and accessories, with online shoppers able to order internationally.
Financial Health
HealthyHealthy · -68% CAGR over 4y
Location
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Computed from 5 filingsRetailer of indoor and outdoor lighting products through an online store, including ceiling lights, floor and table lamps, wall lights, garden lighting, LED light bulbs, shades, smart lighting, and…
Sells primarily to consumers shopping online for domestic lighting, including homeowners and renters buying indoor, outdoor, garden, office and study lights, lamps, shades and bulbs.
Financial Health
StableStable · -58% CAGR over 5y
Location
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Computed from 3 filingsPublishes craft magazines, books and websites covering hobbies such as crochet, knitting, sewing and papercraft. Sells subscriptions, patterns, downloadable projects and craft supplies online, and…
Serves B2C craft hobbyists worldwide, especially crochet, knitting, papercraft and sewing enthusiasts, and also addresses craft-sector advertisers and commercial partners.
Financial Health
StableStable · -12% 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 filingsManufactures and sells car detailing and cleaning products, including shampoos, snow foams, waxes, sealants, wheel cleaners and interior cleaners, along with detailing kits, microfibre cloths,…
Sells to car owners, detailing enthusiasts and professional vehicle detailers, with trade accounts for automotive cleaning businesses buying car care products and accessories online.
Financial Health
HealthyHealthy · Hiring · 32% CAGR over 4y
Location
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Computed from 5 filingsProvides subscription meal preparation and delivery services, producing chef‑cooked ready‑to‑eat meals designed to be macro‑balanced and high in protein. Customers select meal plans, snacks and…
Serves health-conscious UK consumers, busy professionals, high achievers, athletes and sports teams seeking convenient nutrition aligned with fitness, performance or lifestyle goals.
Financial Health
WeakWeak · Hiring · 57% CAGR over 4y
Location
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Computed from 3 filingsSupplies aftermarket performance and tuning parts for Volkswagen Group vehicles, including Volkswagen, Audi, SEAT and Škoda models. Operates an online retail store and a specialist workshop providing…
Serves private owners and enthusiasts of Volkswagen, Audi, SEAT/CUPRA, Skoda and related performance models, including online parts buyers and Manchester-area workshop customers seeking tuning and…
Financial Health
HealthyHealthy · Hiring · 8% CAGR over 2y
Location
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Computed from 5 filingsDesigns and sells women’s fashion clothing through an online store, including dresses, tops, skirts, trousers, blazers, outerwear, knitwear and coordinated sets, along with accessories and seasonal…
Sells direct to consumers, primarily women buying premium womenswear online for everyday, workwear, wedding guest, holiday and seasonal occasions, including modest fashion shoppers.
Financial Health
StrongStrong · Hiring · 19% CAGR over 4y
Location
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Computed from 4 filingsOnline retailer of designer clothing, footwear and accessories for men, women and children. Sells products from fashion brands including Gucci, Balenciaga, Versace and others, such as jackets, jeans,…
Sells to UK consumers shopping online for branded designer fashion, including men, women and children seeking clothing, footwear and accessories from luxury and premium labels.
Financial Health
StableStable · Hiring · 17% CAGR over 3y
Location
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Computed from 4 filingsDesigns and sells fashion apparel and accessories for men and women, including dresses, suits, shirts, bags, footwear and jewellery. Operates an online retail store offering clothing collections,…
Serves B2C shoppers seeking men’s and women’s fashion, accessories, bags, footwear, homeware and gifts, including customers buying workwear, occasionwear, sportswear and outlet items online.
Financial Health
DistressedDistressed · 0% CAGR over 2y
Location
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Computed from 5 filingsRetailer of household furniture and home furnishings through an online store and showroom. Sells dining sets, tables, chairs, sofas, beds, mattresses, bar stools, and items such as coffee tables,…
Serves consumers and homeowners, particularly Manchester showroom shoppers and UK online buyers, looking to furnish dining rooms, living rooms, bedrooms and home offices.
Financial Health
StrongStrong · Hiring · 12% CAGR over 4y
Location
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Computed from 4 filingsDevelops and sells sports nutrition products including whey protein, pre‑workout formulas, hydration drinks, creatine, amino acids, and health supplements. Also offers branded apparel and…
Sells direct to consumers, especially gym-goers and fitness enthusiasts buying sports nutrition, health and wellbeing supplements, hydration products, and gym-related apparel online.
Financial Health
StrongStrong · Hiring · 41% CAGR over 4y
Location
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Computed from 3 filingsDesigns and sells flat‑pack sofas delivered in boxes, along with sofa beds, beds and home furniture. Operates an e‑commerce store offering modular seating, living room and bedroom furniture, and…
Sells direct to consumers and households furnishing living rooms, bedrooms, dining areas, home offices and gardens, including buyers seeking fast-delivery furniture and home accessories.
Financial Health
StableStable · Hiring · 183% CAGR over 2y
Location
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Computed from 5 filingsOnline retailer of footwear and workwear, selling men’s, women’s and children’s shoes including boots, trainers, sandals, slippers, and school shoes, as well as safety footwear, work clothing and…
Serves retail customers buying footwear for men, women and children, plus workers, tradespeople and small business workwear buyers seeking safety footwear, outdoor footwear and branded workwear.
Financial Health
DistressedDistressed · -68% CAGR over 4y
Location
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Computed from 5 filingsOperates an online retail store selling unisex streetwear clothing and accessories, including T‑shirts, hoodies, sweaters, trousers, hats and bags. Stocks in‑house and independent brands and releases…
Sells direct to consumers seeking independent unisex streetwear, including graphic tees, hoodies, festival clothing, accessories and collaboration drops, with UK shoppers explicitly targeted through…
Financial Health
StrongStrong · Growing, Hiring · 41% CAGR over 4y
Location
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Computed from 3 filingsOperates an online retail store selling baby products including pacifiers (dummies), baby bottles, bottle accessories, bibs, feeding items, and related accessories. Offers products in different…
Sells direct to consumers, primarily parents and caregivers of babies and toddlers, plus gift buyers shopping for baby showers, baptisms and age-based infant items.
Financial Health
StrongStrong · Hiring · 41% CAGR over 2y
Location
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Computed from 4 filingsOperates an online retail store selling baking equipment, utensils and ingredients. Offers flour, grains, yeast, tins, proofing baskets, mixers, and other tools and supplies for bread, pastry and…
Serves UK home bakers, sourdough and artisan bread enthusiasts, gift buyers, and professional or commercial bakeries needing specialist baking equipment, flours, ingredients and bakery supplies.
Financial Health
HealthyHealthy · 0% CAGR over 4y
Location
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Computed from 5 filingsProduces and sells natural dog and cat food, including dry and wet meals, treats and specialised diets such as grain‑free, high‑meat, organic and sensitive formulas for puppies, adult pets and…
Serves a mix of B2C pet owners and B2B breeders/stockists, targeting dog and cat owners buying for puppies, adult and senior dogs, kittens and adult cats, including special-diet needs.
Financial Health
WeakWeak · -68% CAGR over 4y
Location
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Computed from 3 filingsDesigns and sells kitchen and household appliances including ovens, hobs, cooker hoods, refrigerators, freezers, dishwashers, microwaves, sinks and taps, wine coolers, air fryers and washing…
Sells direct to UK consumers, including homeowners and renters furnishing or upgrading kitchens, with appeal to budget-conscious shoppers seeking modern household appliances.
Financial Health
WeakWeak · 0% CAGR over 2y
Location
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Computed from 5 filingsOperates an online retail store selling pond and aquarium supplies, including fish tanks, pumps, filters, pond liners, water treatments, lighting, fish food, aquatic plants, and maintenance equipment…
Serves UK consumers and hobbyists who keep garden ponds, koi ponds, aquariums and fish tanks, including pond owners and aquarium keepers buying online.
Financial Health
HealthyHealthy · Hiring · 8% CAGR over 4y
Location
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Computed from 5 filingsDesigns and sells personalised clothing and gift items through an online store, including custom T‑shirts, sweatshirts, hoodies, hats, bags and accessories featuring printed or embroidered names,…
Serves consumers shopping online for personalised clothing and gifts, including families and gift buyers for mums, dads, children, teachers, weddings, birthdays, Christmas and Valentine’s Day.
Financial Health
WeakWeak · -4% CAGR over 4y
Location
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Computed from 2 filingsSupplies professional beauty products and training for salons and technicians, specialising in eyebrow and eyelash treatments. Sells treatment kits, cosmetics, tools and accessories for brows,…
Sells to professional beauty businesses and practitioners, including salons, lash and brow technicians, PMU artists, nail and tanning professionals, and learners seeking treatment training.
Financial Health
HealthyHealthy · -31% CAGR over 1y
Location
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Computed from 5 filingsOperates an online retail store selling bottled and canned beers from international and UK breweries, including craft beer, lager, IPA and alcohol‑free options. Also sells mixed beer cases, mini…
Sells primarily to consumers buying beer and drinks gifts online, including shoppers for birthdays, anniversaries, graduations and teacher gifts, plus businesses purchasing corporate gifts.
Financial Health
StableStable · Hiring · 91% CAGR over 3y
Location
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Computed from 3 filingsDesigns and sells home interior furnishings including fabrics, wallpapers, cushions, furniture, lampshades and trimmings. Provides made‑to‑measure curtains and blinds and offers patterned textile…
Sells to consumers furnishing their homes and trade buyers such as interior designers and decorators sourcing materials for residential interior projects.
Financial Health
StrongStrong · Hiring · 38% CAGR over 2y
Location
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Computed from 3 filingsOnline retailer of home furnishings and interior décor products, including fabrics, wallpaper, curtains, blinds, cushions, and furniture. Offers collections made with natural or recycled materials…
Serves sustainability-conscious UK homeowners and trade interiors buyers, including interior designers and decorators, looking for home furnishing fabrics, wallpaper, curtains, blinds, cushions and…
Financial Health
HealthyHealthy · 0% CAGR over 2y
Location
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Computed from 3 filingsDesigns and sells staff uniforms and workwear for sectors including healthcare, hospitality, beauty, and corporate services. Product range includes scrubs, tunics, aprons, shirts, suits, and…
Serves businesses and institutions needing staff uniforms, including healthcare providers, care homes, dental and veterinary practices, beauty and spa operators, hotels, restaurants, caterers,…
Financial Health
DistressedDistressed · -28% CAGR over 2y
Location
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Computed from 4 filingsSupplies performance and tuning parts for BMW and MINI vehicles through an online store, including exhaust systems, suspension components, wheels, engine parts and accessories. Also provides ECU…
Serves BMW, MINI and Toyota Supra owners, tuners and performance car enthusiasts seeking model-specific upgrades, accessories and workshop fitting, with online customers worldwide.
Financial Health
StrongStrong · Growing, Hiring · 50% CAGR over 3y
Location
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Financial sub-scores
Computed from 5 filingsRetailer of aftermarket performance car parts and tuning products through an online store, including exhaust systems, suspension kits, intake components, brakes, engine parts, electronics, wheels,…
Serves performance car owners, tuning enthusiasts and independent garages seeking aftermarket motorsport and vehicle upgrade parts, with a focus on retail customers modifying cars for road or track…
Financial Health
StrongStrong · Growing, Hiring · 19% CAGR over 4y
Location
Buy this list of 95 companies
The complete list in one Excel/CSV file — company details, websites and key data. Yours to download and use.
45 more companies and their verified directors are in the file
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Key facts
About 9% of the trading cohort reports turnover above £5M (5 of 54 firms) — the rest sits below that revenue band.
5% of the cohort was incorporated since 2022 (3 firms), so a sizeable share is in its first few filing cycles.
E-commerce tags cover 64.8% of the Manchester cohort, with Fashion & Retail at 33.3% and FMCG at 27.8%.
75.9% also show content-delivery or security tooling, while 63.0% show tag-management technology alongside the email-marketing stack.
46.3% also run ecommerce-platform technology, consistent with retention, repeat-purchase and direct-response trading use cases.
ICO guidance places individual email and SMS marketing under PECR, UK GDPR and the Data Protection Act, with consent required unless the limited soft opt-in applies.
IAB UK put UK digital advertising spend at £35.5bn in 2024, up 13% year on year, while ONS cited ecommerce sales of £693 billion in 2019.
What else do Klaviyo users run?
Share of the 54 Klaviyo-running UK companies where each technology was also detected. As of June 2026.
Who runs Klaviyo 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
£733.9K
Median UK turnover
9.3%
Above £5M turnover
3
Incorporated since 2022
Verified directors — included in the file
Director names and roles for these 95 companies, alongside financials and websites, in one Excel + CSV file.
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.
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.
Klaviyo elsewhere
Frequently asked questions
How many companies in Manchester use Klaviyo?
How is Klaviyo usage detected?
What kinds of companies use Klaviyo in Manchester?
What do Klaviyo users in Manchester also run?
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