Companies Using Klaviyo in Leeds: 60 Active Firms (2026)
Leeds companies running email marketing technology sell online, manage customer retention and send consent-based campaigns across the city region.
Adoption points to a trading model built around owned customer relationships rather than one-off lead capture. The buying centre is usually ecommerce, CRM or retention marketing, with finance involved where campaign attribution feeds budget decisions. These teams use the platform to manage mailing lists, automate lifecycle messages, segment customers by behaviour and sync website events with campaign activity. It tends to signal a business with enough order flow, repeat-purchase logic and consent management work to justify specialist marketing operations, but not necessarily a large in-house technology team; many users sit between owner-managed commerce and mid-market consumer brands.
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Leeds has 60 active trading companies running this email-marketing technology, a small but legible adoption cluster rather than a broad software market in its own right. Together, they report 547 employees, so the footprint is still weighted towards lean commercial teams rather than large employers. E-commerce accounts for 63.3% of the cohort, while wholesale and distribution accounts for 28.3% and fashion and retail for 25%. 6 firms report turnover above £5M, suggesting that the visible local base includes a thin layer of scaled operators alongside many smaller trading businesses.
Email and SMS campaigns in the UK sit under PECR, UK GDPR and the Data Protection Act, with the ICO setting the practical compliance expectations. Consent is the usual starting point for messages to individuals, with the soft opt-in limited to previous customers or people negotiating for similar goods or services. Sender identity and a working unsubscribe route are basic requirements. Corporate recipients are treated differently from individuals, although sole traders and some partnerships fall back into the individual category. Cookie-based profiling, retargeting and behavioural advertising add a separate PECR cookies layer when companies running this stack connect website activity to customer records.
Adoption appears likely to remain concentrated among businesses with direct customer relationships, repeat purchase cycles and enough marketing volume to make retention work measurable. The cohort tends to look commercially practical rather than deeply technical: marketing teams want attribution, segmentation and deliverability, while operations teams want fewer manual exports between storefronts, analytics tools and customer databases. Pressure is likely to come from privacy enforcement, consent quality and platform bundling, which may push some smaller users towards simpler suites. More mature retailers and subscription-led firms are likely to keep specialist tooling where lifecycle revenue can be tied back to campaign work.
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. 0.1% of the 56,251 companies with under 10 employees run Klaviyo (32 detected). 0.8% of the 2,891 companies with 10–50 employees run Klaviyo (24 detected). 1% of the 307 companies with over 50 employees run Klaviyo (3 detected). That is a 0.9% gap between the over 50 employees and under 10 employees bands.
60
Active firms
2026
6
Above £5M turnover
Trading firms
6
Median headcount
Filed accounts
131
Verified directors
Across this cohort
Top companies using Klaviyo in Leeds
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.
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Computed from 2 filingsOperates an online retail store selling prams, pushchairs, travel systems, child car seats and baby equipment. Product range includes nursery furniture, bedding, feeding accessories, toys, clothing,…
Sells to expectant parents, new parents and families shopping for baby and toddler essentials, primarily as a consumer retail audience.
Financial Health
StableStable
Location
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Computed from 5 filingsDesigns and sells hybrid mattresses combining pocket springs and memory foam, including bamboo and charcoal‑infused models. Also retails pillows, mattress toppers, bedding, bed frames and sleep…
Sells primarily to UK consumers shopping online for home sleep products, including individuals and households buying mattresses, bedding, bed frames and related accessories.
Financial Health
StableStable · -11% CAGR over 5y
Location
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Computed from 5 filingsDistributes industrial, trade, and consumer paints and specialist coatings, including fire-retardant, anti-slip, roof, floor, metal, and marine paints. Supplies colour-matched coatings, primers, wood…
Sells to trade professionals, industrial buyers and consumers needing specialist paints and coatings, including contractors, facilities teams, property owners, DIY customers and sectors such as…
Financial Health
HealthyHealthy · 0% CAGR over 4y
Location
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Computed from 3 filingsSupplies timber and building materials to trade and DIY customers through a retail and online timber merchant. Products include planed and structural timber, sheet materials, fencing, decking,…
Serves a mix of trade and consumer buyers, including professional builders, contractors, DIY enthusiasts and homeowners undertaking renovation, decking, fencing and garden projects across Leeds and…
Financial Health
StableStable · -3% CAGR over 2y
Location
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Computed from 3 filingsOperates an online retail store selling vaping products including disposable vapes, pod kits, e‑liquids, nicotine salts, prefilled pods, coils and accessories, and offers wholesale supply of vape…
Serves adult vaping consumers across the UK shopping online, plus wholesale trade customers such as vape retailers seeking branded disposable vapes, pod kits, e-liquids and accessories.
Financial Health
StrongStrong · Hiring · 73% CAGR over 2y
Location
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Computed from 3 filingsOperates an online retail store selling women’s clothing, including tops, blouses, trousers, jeans, knitwear, jackets, and occasionwear. Offers themed collections such as basics, officewear, and…
Sells direct to consumers, primarily women buying affordable everyday, office, occasion and leisure clothing online for personal wardrobes.
Financial Health
HealthyHealthy · 0% CAGR over 2y
Location
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Computed from 5 filingsProduces and sells frozen ready meals and high‑protein convenience foods, including chicken dishes, wraps and snack products. Offers online ordering and subscription delivery, and supplies packaged…
Sells to UK consumers seeking convenient high-protein, low-calorie frozen meals, including subscription buyers, and to retail stockists or wholesale partners carrying healthy ready-meal products.
Financial Health
StableStable · -66% CAGR over 4y
Location
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Computed from 5 filingsDesigns and sells performance eyewear and related accessories, including sunglasses, prescription eyeglasses, blue‑light filtering glasses, and snow goggles. Offers replacement lenses, frames, and…
Serves active consumers and athletes in running, cycling, triathlon, golf, snow sports, training and outdoor markets, with additional B2B channels for wholesale accounts, corporate groups, government…
Financial Health
WeakWeak · 0% CAGR over 4y
Location
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Computed from 5 filingsOnline retailer of flower bulbs, bare-root perennials, and ornamental garden plants. Sells dahlias, lilies, shrubs and other planting stock through an e‑commerce store, with planting advice and…
Sells to home gardeners and gardening enthusiasts in the UK and Europe buying flower bulbs, bare-root perennials, shrubs and ornamental plants online.
Financial Health
HealthyHealthy · Hiring · 11% CAGR over 4y
Location
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Computed from 4 filingsOperates an online retail store selling home healthcare and medical equipment, including nebulisers, oxygen concentrators, blood pressure monitors, ECG devices, pulse oximeters, thermometers, first…
Sells primarily to UK consumers and carers buying home healthcare, mobility, respiratory, diabetic, monitoring, pain relief, beauty and baby-care products, including people with chronic medical…
Financial Health
StableStable · -7% CAGR over 3y
Location
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Computed from 5 filingsSells gym and fitness equipment for home and commercial use through an online store, including dumbbells, barbells, weight plates, kettlebells, racks, benches, gym flooring, and strength training…
Sells to home fitness consumers, strength-training beginners and athletes, and commercial gym operators or fitness facilities, including buyers outfitting home gyms, studios, or training spaces.
Financial Health
HealthyHealthy · Hiring · 12% CAGR over 4y
Location
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Computed from 5 filingsDesigns and sells bamboo-based bedding and sleep products through an online store, including mattresses, mattress toppers, pillows, duvets, bedding sets, bath towels, and children’s sleep…
Sells primarily to UK consumers and households shopping online for sleep and home textiles, including parents buying kids’ and baby sleep items.
Financial Health
HealthyHealthy · Hiring · 11% CAGR over 4y
Location
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Computed from 5 filingsOperates an online retail store selling animal care products, including ear drops for dogs, barrier balms for horses, and treatments for itchy or irritated skin. Offers natural ingredient-based…
Sells B2C to dog, cat and horse owners seeking animal care products, including pet owners managing skin, ear and seasonal care issues, with online shoppers in the UK, Guernsey and Isle of Man.
Financial Health
WeakWeak · Hiring · 4% CAGR over 4y
Location
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Computed from 3 filingsOperates an online competition platform offering paid-entry prize draws for football-related memorabilia, signed shirts, cash prizes and sports betting credits. Users purchase tickets for draws and…
Targets consumers who are football fans, club supporters and sports memorabilia collectors, including followers of Premier League, EFL and Scottish clubs, who enter paid prize draws for…
Financial Health
StrongStrong · Hiring · 48% CAGR over 2y
Location
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Computed from 5 filingsDistributes and sells Thermos-branded vacuum‑insulated drinkware and food storage products, including flasks, travel mugs, bottles, lunch bags and food containers, supplying retail and wholesale…
Sells directly to UK consumers shopping for drinkware, food containers and lunch products, including adults buying on-the-go items and parents purchasing kids’ bottles, flasks and lunch bags.
Financial Health
StableStable · -72% CAGR over 4y
Location
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Computed from 5 filingsProvides digital agency services focused on e‑commerce and web platforms, including website design and development, UX design, Adobe Commerce and Magento implementation, digital strategy, SEO, paid…
Serves businesses and consumer brands with significant ecommerce operations, including retailers and online marketplaces, particularly teams using Adobe Commerce/Magento, Google marketing channels…
Financial Health
StrongStrong · Growing, Hiring · 17% CAGR over 4y
Location
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Computed from 5 filingsSupplies workplace equipment and industrial supplies via catalogue and e‑commerce, including storage and shelving systems, lockers, handling equipment, ladders, cleaning products, waste and recycling…
Sells primarily to UK and Ireland businesses and organisations, including facilities, warehouse, office, education, healthcare, catering and hygiene teams.
Financial Health
StableStable
Location
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Computed from 5 filingsOperates an online retail platform selling luxury leather footwear, handbags and fashion accessories for men and women, including shoes, boots, bags, wallets and small leather goods.
Serves B2C luxury fashion consumers, including women and men shopping online for premium shoes, bags and leather accessories, with worldwide country and currency coverage.
Financial Health
StableStable · Hiring · 5% CAGR over 4y
Location
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Computed from 5 filingsManufactures and sells folding guest beds, sofa beds, mattresses and children’s mattresses, along with related bedding accessories. Produces tubular and upholstered furniture and retails sleep…
Sells primarily to UK consumers and households, including parents and homeowners or renters furnishing spare rooms, living spaces, and guest accommodation through a direct online store.
Financial Health
WeakWeak · -68% CAGR over 4y
Location
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Computed from 5 filingsDesigns and sells sports, fitness and outdoor equipment through e‑commerce, including stand‑up paddleboards, fitness equipment and active lifestyle products, marketed under in‑house brands and…
Serves B2C online retail customers seeking sports, fitness, outdoor and wellbeing products, including active lifestyle and paddleboarding users, with sales delivered internationally.
Financial Health
DistressedDistressed
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Computed from 5 filingsDesigns and sells bathroom mirrors and mirror cabinets, including LED illuminated, demisting, Bluetooth and shaver‑socket models, along with bathroom lighting such as downlights, ceiling lights and…
Sells to consumers buying bathroom mirrors, mirror cabinets and lighting for home bathrooms, and also serves trade buyers via a dedicated trade portal.
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WeakWeak · -5% CAGR over 4y
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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…
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HealthyHealthy · Hiring · 4% CAGR over 4y
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Computed from 3 filingsOperates an online retail store supplying aviation equipment and pilot accessories, including aircraft headsets, airband radios, GPS devices, flight bags, charts, training materials, safety gear,…
Sells to pilots and aviation enthusiasts, including private and trainee pilots, airline and helicopter pilots, microlight flyers, and aircraft owners, primarily in the UK and Europe.
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WeakWeak · Hiring · 8% CAGR over 2y
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Computed from 5 filingsManufactures and wholesales Bathmate hydropump devices and related accessories for male sexual health and personal care, including penis pumps, prostate pumps, hygiene devices, spare parts, and…
Serves adult consumers in the male sexual wellness market, alongside wholesale distributors, affiliates and retailers in the adult products sector worldwide
Financial Health
DistressedDistressed
Location
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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.
Financial Health
StrongStrong · Growing, Hiring · 32% CAGR over 2y
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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.
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StrongStrong · Growing, Hiring · 5% CAGR over 4y
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Computed from 5 filingsPrepares and sells freshly frozen Indian ready meals including curries, dals and biryanis. Meals are cooked in-house, frozen for storage, and ordered online for home delivery. Offers gluten-free,…
Serves UK consumers and households, including individuals, families, curry lovers, and customers with dietary needs such as gluten-free, vegan, vegetarian, dairy-free, low-carb/keto or low-calorie…
Financial Health
HealthyHealthy · Hiring · 14% CAGR over 4y
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Computed from 5 filingsOnline retailer of household furniture and home furnishings, selling beds, mattresses, sofas, tables, storage units, office furniture, garden furniture and home accessories, with options for delivery…
Sells to price-conscious consumers and households furnishing bedrooms, living rooms, offices, kitchens, gardens and home gyms, including parents buying nursery items and shoppers seeking branded home…
Financial Health
HealthyHealthy · Hiring · 4% CAGR over 4y
Location
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Computed from 5 filingsDevelops and sells skincare products including anti‑blemish and scar‑repair serums, cleansers, face masks and treatment bundles. Products are formulated with a silver‑based ingredient called Silver…
Sells to consumers seeking skincare for blemishes, scars, spots and ageing concerns, including people building face and body routines for all skin types through direct online purchases and retail…
Financial Health
HealthyHealthy · Hiring · 47% 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 4 filingsDesigns and sells men's trainers and casual footwear through an online store, offering styles such as running‑inspired and court trainers, along with accessories including socks, laces and shoe…
Sells direct to consumers, primarily men seeking premium casual trainers and luxury footwear, including shoppers buying new releases, restocks, outlet items, accessories and gift cards online.
Financial Health
StrongStrong
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Computed from 5 filingsOperates an online retail store selling Indian and Pakistani designer clothing and fashion items. Offers women’s and men’s garments from brands such as Junaid Jamshed, Gul Ahmed, Sana Safinaz and…
Serves B2C shoppers in the UK and internationally seeking designer Indian and Pakistani fashion brands, including customers buying South Asian clothing online.
Financial Health
HealthyHealthy · -3% CAGR over 4y
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Computed from 5 filingsOnline retailer of DJ and music production equipment, selling controllers, turntables, mixers, synthesizers, studio monitors, PA systems, and related accessories. Also offers DJ and studio equipment…
Targets individual and professional DJs, music producers, recording studios, performers and live sound buyers, with online customers across the UK, Europe and the USA.
Financial Health
HealthyHealthy · Hiring · 11% CAGR over 4y
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Computed from 3 filingsRetailer of men's formal and traditional clothing, including sherwanis, prince coats, kurta pajama sets and embroidered groomwear. Sells ready‑made wedding and occasion menswear through an online…
Sells to male consumers, especially grooms and wedding guests seeking South Asian, Turkish and Moroccan formalwear and festive outfits, through an online shop and retail stores.
Financial Health
StableStable · 0% CAGR over 2y
Location
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Computed from 5 filingsSupplies aesthetic and cosmetic clinic products through an online wholesale store, including dermal fillers, PDO threads, skin boosters, mesotherapy solutions, chemical peels, fat dissolvers, exosome…
Serves UK aesthetics clinics, cosmetic practitioners and beauty or medical professionals buying wholesale injectable skincare supplies, clinic consumables and training.
Financial Health
StrongStrong · Growing, Hiring · 16% CAGR over 4y
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Retailer of motorcycle helmets, clothing and riding accessories through an e‑commerce website and physical stores. Sells jackets, gloves, boots, luggage, security products, parts and maintenance…
Serves B2C motorcycle riders and enthusiasts across the UK, including commuters, touring riders, sports and motocross riders, plus women, children and gift buyers shopping online or in-store.
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N/AN/A
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Computed from 5 filingsSupplies food and takeaway packaging to restaurants, takeaways and retailers, including pizza, noodle and burger boxes, cups, bags, plastic containers and disposable tableware. Also provides…
Serves UK food businesses including takeaways, restaurants, cafes, commercial kitchens and supermarkets that need food, fast-food, takeaway and branded packaging supplies.
Financial Health
HealthyHealthy · -50% CAGR over 5y
Location
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Computed from 5 filingsDesigns, manufactures and sells jewellery including earrings, necklaces, rings, bracelets, engagement rings and wedding bands in gold, silver and other metals. Also offers personalised jewellery and…
Sells primarily to consumers seeking ethical and sustainable fine jewellery, including everyday buyers, gift shoppers, and couples purchasing engagement or wedding rings, with UK shipping and…
Financial Health
HealthyHealthy · Hiring · 14% CAGR over 4y
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Computed from 5 filingsSupplies professional hairdressing and beauty products and equipment to salons and colleges through wholesale outlets and an online store. Product range includes haircare, hair colour, electrical…
Serves professional hair and beauty trade customers, including hair salons, barbers, beauty and spa salons, nail technicians, and training colleges.
Financial Health
HealthyHealthy · Hiring · 8% CAGR over 4y
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Computed from 2 filingsOnline retailer of sofas and home cinema seating, including recliner, electric and modular models in leather and fabric. Sells sofas with features such as USB charging, speakers, cupholders, LED…
Sells to UK consumers and households furnishing living rooms, home cinemas and gaming rooms, including buyers seeking recliner, leather, fabric, sofa-bed and pay-monthly options.
Financial Health
HealthyHealthy · Hiring · 43% CAGR over 1y
Location
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Computed from 4 filingsManufactures and sells precious metal bullion products including gold and silver bars, rounds, and themed coins, along with copper bullion items, collectible designs, engravable pieces, and…
Sells direct to consumers, including precious metal investors, coin and bullion collectors, gift buyers, and hobbyists seeking themed gold, silver, and copper items.
Financial Health
StrongStrong · Growing, Hiring · 19% CAGR over 3y
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Computed from 5 filingsOnline retailer of beds, mattresses and bedroom furniture. Offers bed frames including TV, storage, upholstered and children’s beds, along with divans, headboards and mattresses, plus bedroom items…
Serves UK mainland consumers and households shopping online for bedroom furniture, including parents buying children’s beds and customers seeking storage, guest, TV or made-to-order bed options.
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StrongStrong
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Computed from 4 filingsSells beds and bedroom furniture through an online store, including upholstered bed frames, ottoman storage beds, TV beds, divan bases, mattresses, and blanket boxes, with multiple fabric options and…
Sells direct to UK consumers and households shopping online for luxury or made-to-order beds, mattresses and bedroom furniture, including buyers seeking storage, TV, ottoman and high-headboard styles.
Financial Health
StrongStrong · Growing, Hiring · 30% CAGR over 3y
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Computed from 4 filingsManufactures and sells bespoke and standard mattresses, including pocket‑sprung and made‑to‑measure designs. Also supplies bed bases, headboards and bedding products such as duvets, pillows, linen,…
Sells primarily to consumers seeking bespoke and luxury sleep products, including homeowners, parents buying cot mattresses, and buyers needing made-to-measure mattresses, beds and bedding in UK, US…
Financial Health
StableStable · -76% CAGR over 3y
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Computed from 5 filingsManufactures custom-sized cardboard boxes and packaging for shipping and retail use. Offers online box design and ordering, printed boxes, and supplies packaging materials such as tape, bubble wrap,…
Serves UK businesses of varying sizes, especially ecommerce sellers, retailers, subscription brands and manufacturers across food and drink, clothing, electronics, publishing, arts and crafts, toys,…
Financial Health
DistressedDistressed · -67% CAGR over 4y
Location
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Computed from 5 filingsOnline retailer of household furniture, selling products through an e‑commerce website. Product range includes dining sets, chairs, bedroom furniture, living room items, bar stools, and rattan garden…
Sells direct to UK consumers and homeowners shopping online for home and garden furniture, including dining, living room, bedroom and rattan outdoor sets.
Financial Health
StrongStrong · Hiring · 11% CAGR over 4y
Location
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Computed from 5 filingsSupplies shelving and storage equipment through an online store, including garage shelving, industrial racking, pallet racking, lockers, workbenches and storage boxes, along with accessories such as…
Serves UK homeowners and B2B buyers in warehouses, factories, commercial kitchens, medical facilities, workshops, offices, schools and colleges.
Financial Health
HealthyHealthy · -55% CAGR over 5y
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Computed from 5 filingsDesigns and supplies gym equipment for commercial and home fitness facilities. Offers bespoke 3D gym design and planning, and sells strength machines, racks, benches, barbells, dumbbells, weight…
Serves home gym owners and commercial fitness operators, including professional gyms and facilities planning new or upgraded strength and cardio spaces, with separate consumer and commercial ranges.
Financial Health
StableStable · Hiring · 9% CAGR over 4y
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Computed from 3 filingsDesigns and sells bespoke upholstered bed frames, headboards and mattresses, including wingback, sleigh and panelled styles. Also offers bedroom accessories such as ottoman storage boxes, footstools,…
Sells primarily to consumers and homeowners shopping online for made-to-order bedroom furniture, mattresses and soft furnishings, including buyers seeking custom sizes, fabrics and luxury-style…
Financial Health
StrongStrong · Hiring · 61% CAGR over 2y
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Computed from 3 filingsOperates an online shop selling automotive parts, specialising in genuine OEM vehicle lighting components such as xenon and LED headlights for Audi, Mercedes, Volkswagen and other models, with…
Sells to UK consumers and motor trade buyers seeking genuine OEM automotive parts, particularly owners, garages and traders buying replacement headlights and parts for Audi, Mercedes and Volkswagen…
Financial Health
HealthyHealthy · 0% CAGR over 2y
Location
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37 more companies and their verified directors are in the file
You’re seeing the top 50. Buy the list to get all 87 with directors, websites and financials.
Key facts
About 10% of the trading cohort reports turnover above £5M (6 of 60 firms) — the rest sits below that revenue band.
3% of the cohort was incorporated since 2022 (2 firms), so a sizeable share is in its first few filing cycles.
E-commerce tags appear on 63.3% of the Leeds cohort, while Wholesale & Distribution (28.3%) and Fashion & Retail (25.0%) show the business mix behind much of the retention work.
83.3% also run a web performance and security layer, and 66.7% also run tag-management technology, pointing to sites built around measurable advertising and conversion flows.
56.7% also run hosted-commerce technology; analytics and payment tooling appear in the next tier at 30.0% and 28.3% respectively.
ICO guidance under PECR, UK GDPR and the Data Protection Act requires specific consent for most individual marketing emails and texts, plus clear sender identification and a valid opt-out route.
IAB UK put the UK digital advertising market at £35.5 billion in 2024, up 13% year on year; search accounted for 47% at £16.6 billion.
What else do Klaviyo users run?
Share of the 60 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
£1.1M
Median UK turnover
10%
Above £5M turnover
2
Incorporated since 2022
Verified directors — included in the file
Director names and roles for these 87 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.
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Frequently asked questions
How many companies in Leeds use Klaviyo?
How is Klaviyo usage detected?
What kinds of companies use Klaviyo in Leeds?
What do Klaviyo users in Leeds also run?
How fresh is this data?
Can I get contact details for these companies?
Buy all 87 companies as a spreadsheet.
One Excel/CSV file with company details, websites and key data — yours to download and use.