E-Commerce Companies Using Klarna in the UK: 334 Active Firms (2026)
E-commerce retailers using pay-later checkout tools sell goods online with instalment or deferred-payment options for UK shoppers.
For e-commerce retailers, the pay-later layer sits between conversion, payments operations and customer service rather than in a purely finance stack. Companies running this checkout technology tend to have direct web commerce teams, enough order volume to justify third-party payment integrations, and internal ownership of merchandising, fraud review, fulfilment and returns. Adoption also signals a consumer-facing sales motion where basket completion, repeat purchase and checkout choice matter to the trading model. The typical buyer is not a payments supplier; it is a retailer or marketplace using an external checkout option as part of a wider e-commerce stack.
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UK adoption covers 334 actively trading e-commerce retailers running the checkout tool profiled here. Reported employment across the cohort is 2,990 people. Within detected buy-now-pay-later usage across a sector denominator of 379, the tool ranks first at 88.1%; another detected pay-later option appears at 16.9%. The regional skew is fairly dispersed: South East accounts for 14.7%, London and South West each sit at 13.2%, Yorkshire and The Humber accounts for 12.3%, and East of England contributes 10.2%.
Pay-later checkout sits close to consumer-credit presentation, payments operations, privacy controls and customer complaints handling. Retailers adopting it need to coordinate refund wording, late-delivery exceptions, fraud checks and marketing consent across checkout and post-purchase journeys. Procurement is also shaped by platform fit: the payment option has to work with web analytics, email marketing, bot protection, fulfilment systems and customer-service workflows without creating avoidable reconciliation work. For smaller retailers, the main operating question is often less legal architecture than whether finance, web and support teams can keep the checkout journey accurate when promotions, returns and stock status change.
Adoption appears tied less to novelty than to the continuing pressure on online retailers to reduce checkout friction while protecting margins and service quality. The cohort tends to favour merchants with direct-channel trading discipline, rather than retailers treating web sales as an adjunct to wholesale. Over time, pay-later tools are likely to be assessed more tightly alongside fraud controls, returns economics and customer-support load. Some retailers may consolidate payment options to simplify operations, while others keep multiple routes at checkout where customer acquisition depends on choice and familiarity.
Adoption by company size
Adoption of Klarna rises with company size across the trading UK e-commerce companies in this cohort. 0.4% of the 58,696 companies with under 10 employees run Klarna (206 detected). 5% of the 2,333 companies with 10–50 employees run Klarna (116 detected). 5.7% of the 158 companies with over 50 employees run Klarna (9 detected). That is a 5.3% gap between the over 50 employees and under 10 employees bands.
334
Active firms
2026
88.1%
Of detected Buy now pay later share
UK e-commerce
7
Median headcount
Filed accounts
673
Verified contacts
Across this cohort
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Key facts
About 12% of the trading cohort reports turnover above £5M (41 of 334 firms) — the rest sits below that revenue band.
4% of the cohort was incorporated since 2022 (15 firms), so a sizeable share is in its first few filing cycles.
Within UK e-commerce retailers with a detectable buy-now-pay-later system, this checkout tool appears on 88.1% of sites (334 of 379); the next detected option appears on 16.9% (64).
Registered offices are spread across several regions: the South East accounts for 14.7% (49), with London and the South West each at 13.2% (44).
The cohort overlaps heavily with retail categories: 46.7% (156) are also tagged Fashion & Retail, while 18.6% (62) sit in Wholesale & Distribution.
Website stacks often include adjacent checkout and measurement tools, with 50.3% (168) also showing a wallet-style payment option and 41.9% (140) running web analytics.
There are 673 verified decision-maker contacts across the pay-later e-commerce cohort, suggesting several contacts per active retailer rather than one named owner per firm.
Payments market share among UK E-Commerce
What else do Klarna-running E-Commerce run?
Share of the 334 Klarna-running UK companies where each technology was also detected. As of June 2026.
Where Klarna E-Commerce are, and how healthy they look
By region
By registered-office region; companies without a regional match count toward Rest of UK.
By financial health
From filed accounts; firms with fewer than two filings show as insufficient history.
7
Median headcount
£800.6K
Median UK turnover
12.3%
Above £5M turnover
15
Incorporated since 2022
673 verified decision-maker contacts
across these 334 companies, with emails available in Firmbase. Filter by role, seniority and stack.
Top UK E-Commerce using Klarna
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 filingsRetailer of solid oak furniture for dining rooms, living rooms, bedrooms and kitchens. Sells dining tables, chairs, TV units, storage units and accessories through an e‑commerce store and showrooms,…
Serves UK consumers and homeowners furnishing dining rooms, living rooms, bedrooms and kitchens, including shoppers buying online or visiting furniture showrooms.
Financial Health
HealthyHealthy · Growing · 0% CAGR over 4y
Location
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Computed from 5 filingsOperates an online retail platform selling women’s clothing, footwear, and accessories. Offers dresses, tops, knitwear, coats, lingerie, maternity wear, and other apparel across multiple in‑house and…
Sells to consumers shopping for fashion, especially women across curve, tall, petite and maternity fits in sizes 8-36, with some menswear customers through BadRhino.
Financial Health
StableStable · Hiring · 32% CAGR over 4y
Location
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Financial sub-scores
Computed from 5 filingsOperates an online retail platform selling designer clothing, shoes, accessories and beauty products from multiple fashion brands. Provides e‑commerce shopping, order fulfilment, payments and returns…
Sells to fashion-conscious consumers shopping online for designer women’s and men’s clothing, shoes, accessories and beauty products, including customers seeking occasion, festival, holiday and…
Financial Health
StrongStrong · Growing, Hiring · 7% 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 5 filingsRetailer of outdoor clothing, footwear and equipment through online and store channels. Offers waterproof jackets, ski wear, walking trousers, boots, casual clothing and accessories for men, women…
Sells to B2C shoppers, including men, women and families buying for outdoor activities, walking, skiing, schoolwear and casual use through online and store channels.
Financial Health
StableStable · -60% CAGR over 4y
Location
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Computed from 3 filingsOperates an online retail store selling fishing tackle and bait, including rods, reels, lines, hooks, floats, feeders and other angling equipment and accessories for coarse, carp, fly and sea fishing.
Sells directly to consumer anglers, from coarse, carp, match, sea and fly fishing enthusiasts to hobbyists needing rods, reels, bait and accessories, via an online store with UK and international…
Financial Health
StrongStrong · Growing, Hiring · 34% CAGR over 2y
Location
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Computed from 5 filingsOperates an online retail platform selling branded clothing, footwear and sportswear for men, women and children. Offers trainers, apparel and accessories from multiple brands through an e‑commerce…
Serves B2C retail customers buying branded fashion, footwear and sportswear for men, women and children, with site options for shoppers in the UK, Ireland and several European countries.
Financial Health
StrongStrong · Growing, Hiring · 32% CAGR over 4y
Location
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Computed from 3 filingsOperates an online retail store selling fishing tackle and angling equipment, including rods, reels, lines, bait, hooks, alarms, bivvies, luggage, and accessories for carp and coarse fishing, from…
Serves recreational anglers and fishing enthusiasts in the UK and Europe, including carp, coarse, predator and sea fishing customers buying online for personal use.
Financial Health
StableStable · 0% CAGR over 2y
Location
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Computed from 5 filingsOperates an online retail platform selling furniture and homeware, including sofas, beds, mattresses, bedroom and dining furniture, lighting, rugs, and bedding products such as duvets, pillows, and…
Sells direct to consumers furnishing their homes, including homeowners, renters, families and students shopping online for bedroom, living room, dining, bathroom and home accessory needs.
Financial Health
StableStable · -29% CAGR over 4y
Location
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Computed from 2 filingsOperates an online retail store selling home, garden and leisure products, including outdoor furniture, BBQ equipment, garden structures, tools, storage solutions, lighting, office furniture, and…
Sells primarily to UK consumers and households shopping online for garden, patio, home, office, DIY/workshop and leisure items, including homeowners, renters, gardeners and home-office users.
Financial Health
StrongStrong
Location
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Computed from 5 filingsRetailer of fine jewellery and luxury watches, including engagement rings, wedding bands, diamond jewellery and branded timepieces. Also offers pre-owned watches, watch servicing, battery…
Serves consumers in the UK and Republic of Ireland buying fine jewellery, engagement and wedding rings, luxury watches, gifts, and watch aftercare services.
Financial Health
StrongStrong · Profitable, Growing, Hiring · 9% CAGR over 4y
Location
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Computed from 3 filingsSells furniture and homeware through an online retail store, including made‑to‑order sofas, beds and headboards, as well as tables, seating, storage, lighting, mirrors, textiles, garden furniture,…
Sells to consumers furnishing and decorating their homes, including buyers of living room, bedroom, dining, garden and home office products, as well as made-to-order upholstery.
Financial Health
StableStable · Hiring · 41% CAGR over 2y
Location
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Computed from 5 filingsRetailer of upholstered furniture selling sofas, corner sofas, modular and U‑shape sofas, sofa beds, armchairs and footstools in various fabrics and styles through an e‑commerce website and showrooms.
Serves consumers and households furnishing living spaces, including online shoppers and showroom visitors seeking sofas, sofa beds, armchairs and related home seating.
Financial Health
StableStable · -69% CAGR over 4y
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 5 filingsOnline retailer of domestic appliances including cookers, ovens, hobs, refrigerators, freezers, washing machines, tumble dryers, dishwashers and microwaves. Sells new, graded, clearance and…
Sells to UK consumers and households buying domestic kitchen, laundry and refrigeration appliances online, with local showroom customers also served through its electrical centre.
Financial Health
StableStable · Growing · 0% CAGR over 4y
Location
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Computed from 5 filingsRetailer of beds, mattresses and bedroom furniture, including divan bases, bedsteads, headboards and bed sets. Sells products from brands such as Sealy, Silentnight and Relyon through an online store…
Serves UK consumers and households shopping online or in-store for bedroom furniture, with retail finance and delivery to most of the UK mainland.
Financial Health
HealthyHealthy · Hiring · 3% CAGR over 4y
Location
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Computed from 2 filingsDesigns and sells women’s fashion including coats, dresses, knitwear, footwear, and accessories. Operates an online store and retail network offering seasonal collections and product catalogues,…
Serves consumers buying fashion collections online, with country-specific purchasing and delivery across supported markets in Europe, North America, Asia, Oceania, South America and Africa.
Financial Health
HealthyHealthy · Hiring · 13% CAGR over 1y
Location
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Computed from 3 filingsRetailer of fishing tackle and angling equipment via an online store, selling rods, reels, bait, terminal tackle, luggage, shelters, clothing and accessories from multiple brands for carp, match, sea…
Serves recreational anglers and fishing enthusiasts buying tackle, bait, rods, reels, clothing and accessories online, including carp, coarse, match, pike, sea, fly and catfish anglers.
Financial Health
HealthyHealthy · 0% CAGR over 2y
Location
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Computed from 5 filingsOperates an online retail store selling beauty and personal care products, including fragrances, makeup, skincare, haircare, oral care, and cosmetics. Offers branded items, gift sets, sample boxes,…
Sells to UK consumers shopping online for beauty, fragrance, skincare, haircare, personal care, mother-and-child and men’s grooming products, including gift buyers and customers seeking branded…
Financial Health
StrongStrong
Location
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Computed from 3 filingsOperates an online and in-store retail business selling motorcycle helmets, clothing, gloves, boots, parts and accessories. Offers products from multiple brands along with tyres, maintenance items,…
Serves UK motorcycle riders and enthusiasts shopping online or in-store, including commuters, touring riders, motocross riders and buyers of children’s riding gear.
Financial Health
StrongStrong · Profitable, Growing · 1% CAGR over 2y
Location
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Computed from 5 filingsRetailer of home furniture and bedroom products through an online store, selling mattresses, bed frames and divan beds, along with sofas, rugs, tables and lighting for residential interiors.
Sells primarily to consumers furnishing bedrooms and living spaces, including households buying mattresses, beds, sofas and home furniture online with delivery and pay-later options.
Financial Health
StrongStrong · 33% CAGR over 3y
Location
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Computed from 3 filingsOperates an online retail store selling homeware and furnishings, including bedding, duvet covers, curtains, cushions, rugs, towels and throws, alongside garden furniture, lighting, storage products,…
Sells to consumers and households shopping online for affordable homeware, including bedding, curtains, towels, rugs, garden furniture, soft furnishings, pet, kitchen, travel and seasonal household…
Financial Health
StrongStrong · Profitable, Hiring · 53% CAGR over 2y
Location
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Computed from 3 filingsOnline retailer of golf equipment and apparel. Sells golf clubs, balls, bags, trolleys, shoes, GPS devices, clothing and accessories from major brands through an e‑commerce store, with product ranges…
Sells to individual golfers and golf gift buyers, including men, women and juniors, primarily in the UK, through an online retail model.
Financial Health
HealthyHealthy
Location
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Computed from 5 filingsSupplies radiators and heating products through an online store, including designer, column, electric and towel radiators. Also sells radiator valves, pipe kits and accessories, along with composite…
Sells primarily to UK homeowners and residential renovators buying designer radiators, towel rails, composite fencing and related home heating accessories online.
Financial Health
StrongStrong · Hiring · 117% CAGR over 4y
Location
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Computed from 5 filingsOnline retailer of household furniture specialising in sofas, including corner sofas, recliner sofas, sofa beds and 3+2 seater sets. Also sells beds and bed frames through its e‑commerce store and…
Serves UK consumers furnishing homes, including buyers seeking affordable living room furniture, sofa beds, recliners and space-saving options, with finance and fast delivery options.
Financial Health
StrongStrong · Hiring · 28% CAGR over 4y
Location
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Computed from 5 filingsOperates an online retail store selling televisions, projectors, home audio and home cinema systems, speakers, hi‑fi equipment, cables, and related accessories, alongside household electronics…
Serves UK consumers and households shopping online for home entertainment electronics, domestic appliances, gaming products, e-bikes and scooters.
Financial Health
HealthyHealthy · Hiring · 9% CAGR over 4y
Location
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Computed from 5 filingsRetailer of electric and acoustic guitars, bass guitars and related equipment. Sells instruments from brands such as PRS, Fender, Gibson and Taylor, along with starter packs, guitar models and…
Serves consumer musicians, guitar enthusiasts and collectors in the UK and Europe, including hobbyist and professional guitarists seeking high-end electric, acoustic and bass instruments.
Financial Health
HealthyHealthy · Growing · 0% CAGR over 4y
Location
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Computed from 3 filingsSells home and garden furniture and home accessories through an online retail store, including garden dining sets, sofas, beds, dining tables, storage furniture, lighting, rugs, and decorative items…
Sells directly to consumers furnishing modern homes and gardens, including buyers shopping online for dining, living room, bedroom, hallway, bathroom and home office furniture and accessories.
Financial Health
StrongStrong · Hiring · 11% CAGR over 2y
Location
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Computed from 5 filingsDesigns and sells fine jewellery including engagement rings, wedding bands, earrings, necklaces and bracelets made from lab‑grown diamonds and 18k recycled gold, offered through online retail and…
Serves consumers shopping for fine jewellery, especially modern women, couples buying engagement rings or wedding bands, and men seeking jewellery, across the UK, EU, US, UAE and other global markets.
Financial Health
HealthyHealthy · -17% CAGR over 4y
Location
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Computed from 3 filingsRetailer of watches, jewellery and accessories through an online store and retail shop. Sells branded wristwatches, fine jewellery, clocks and watch storage products from multiple manufacturers, with…
Serves UK consumers shopping online or in-store for watches, fine jewellery, accessories and gifts, including buyers of premium watch brands and jewellery for men and women.
Financial Health
StableStable · -6% CAGR over 2y
Location
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Computed from 3 filingsOperates an online retail store selling baby and nursery products, including prams, pushchairs, car seats, nursery furniture, feeding equipment, toys, clothing and accessories from third‑party brands.
Serves UK consumers, primarily expectant parents, new parents and families shopping for babies and young children, including buyers seeking prams, car seats and nursery essentials.
Financial Health
WeakWeak · -10% CAGR over 2y
Location
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Computed from 5 filingsRetailer of DJ and music production equipment through an online store and showrooms. Sells DJ decks, controllers, mixers, turntables, software, headphones, speakers, lighting and related accessories,…
Serves UK DJs and music producers, from beginners and bedroom hobbyists to professional and mobile DJs, plus performers and venues needing PA, lighting, microphones and studio gear.
Financial Health
HealthyHealthy · Hiring · 8% CAGR over 4y
Location
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Computed from 5 filingsRetailer of guitars and related music equipment through an online store and showroom. Sells electric and acoustic guitars, bass guitars, amplifiers, effects pedals, parts, accessories, and used or…
Sells primarily to consumer musicians, guitarists and bassists, including beginners, hobbyists, performers and collectors shopping online or in-store in the UK.
Financial Health
StableStable · Hiring · 8% CAGR over 4y
Location
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Computed from 5 filingsOnline retailer of diamond and gemstone jewellery, selling engagement rings, wedding rings, earrings, pendants and bracelets in metals such as platinum, gold and silver, including pieces with natural…
Serves UK consumers buying engagement and wedding jewellery, diamond accessories and gifts for partners, family and occasions, with ranges for women, men and different budgets.
Financial Health
StrongStrong · Profitable, Growing, Hiring · 40% CAGR over 4y
Location
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Computed from 5 filingsDesigns and sells bamboo-based sleep products including mattresses, mattress toppers, pillows, duvets, bedding sets and bath textiles through an online store, along with children’s bedding and sleep…
Sells primarily to UK consumers and households shopping online for sleep and home textiles, including adults, parents buying kids’ and baby ranges, and gift buyers; also supports international…
Financial Health
StrongStrong · Growing, Hiring · 54% CAGR over 4y
Location
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Computed from 5 filingsRetailer of outdoor clothing, footwear and equipment through an e‑commerce store. Sells jackets, waterproofs, walking boots, trail running shoes, ski wear, climbing gear, camping equipment and…
Serves UK consumers and families who take part in outdoor activities, including hiking, walking, skiing, climbing, trail running, camping and watersports, with ranges for men, women and children.
Financial Health
StrongStrong · Hiring · 17% 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 filingsOperates an online retail store selling branded footwear for women, men and children, including boots, shoes, sandals, trainers and slippers. Offers products from multiple footwear brands and…
Sells B2C to consumers shopping online for branded footwear for women, men, girls and boys, including families and individual shoppers in the UK and international markets.
Financial Health
HealthyHealthy · Growing · 2% CAGR over 4y
Location
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Computed from 5 filingsOperates an online retail store selling men’s, women’s and children’s footwear, including trainers, boots, clogs and sandals, alongside clothing, bags and accessories from brands such as New Balance,…
Sells directly to consumers shopping online for men’s, women’s and children’s footwear, clothing and accessories from branded ranges, with delivery emphasised across Europe.
Financial Health
HealthyHealthy · -12% CAGR over 4y
Location
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Computed from 2 filingsOperates an online store selling children’s outdoor toys and play equipment, including trampolines, swing sets, climbing frames, playhouses, ride‑on vehicles, swimming pools, garden games, and…
Serves B2C consumers, mainly parents, carers and families buying outdoor toys and garden play equipment for children from babies to teenagers, with age-based shopping for home play spaces.
Financial Health
StableStable · Profitable · -31% CAGR over 1y
Location
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Computed from 3 filingsDesigns and sells men’s and women’s clothing, sportswear and accessories, including golf, ski and tennis apparel, footwear, bags and hats. Products are offered through an online retail store and…
Sells direct to consumers shopping for men’s and women’s fashion, footwear and accessories, including golfers, racket-sport players and ski apparel buyers via its online store.
Financial Health
StrongStrong · Hiring · 13% CAGR over 2y
Location
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Computed from 5 filingsDesigns and sells men's and women's clothing through an online retail store, including shirts, T‑shirts, knitwear, trousers, denim, outerwear, dresses, suits, shoes and accessories, offered as…
Sells direct to consumers seeking contemporary menswear and womenswear, with separate ranges for men and women and seasonal and core collections available online and via stores.
Financial Health
StrongStrong · Hiring · 16% CAGR over 4y
Location
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Computed from 5 filingsOperates an online retail store selling wristwatches from multiple brands, including designer, classic and sports models. Offers men’s and women’s watches, smartwatches, straps, gift sets and related…
Serves consumers buying branded watches online, including men’s, women’s and kids’ watch shoppers and gift buyers, with UK and international customers supported by worldwide shipping.
Financial Health
HealthyHealthy · -3% CAGR over 4y
Location
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Computed from 4 filingsOperates an online retail store selling footwear, bags, and accessories for men and women, including trainers, boots, oxfords, golf shoes, handbags, wallets and outerwear, along with shoe care…
Sells direct to UK consumers shopping for men’s and women’s footwear, bags, accessories and outerwear, including workwear, golf, running and occasion styles.
Financial Health
HealthyHealthy · 0% CAGR over 3y
Location
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Computed from 5 filingsOnline retailer of home heating products, selling radiators, heated towel rails, electric radiators, valves, and installation accessories. Offers products in various styles, sizes, materials, and…
Sells online to homeowners, renovators and interior-focused consumers, with a trade offer for installers, plumbers and heating professionals buying for residential rooms and bathroom projects.
Financial Health
StrongStrong · Hiring · 12% CAGR over 4y
Location
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Computed from 5 filingsRetailer of refurbished smartphones, tablets, smartwatches and games consoles through an online store, with a focus on Apple devices. Also provides device repair services and supplies consumer…
Serves UK consumers buying or repairing refurbished smartphones, tablets, watches and games consoles, plus businesses, corporate buyers and wholesale customers sourcing mobile devices and electronics.
Financial Health
HealthyHealthy · Growing, Hiring · 8% CAGR over 4y
Location
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Computed from 5 filingsRetailer of solid wood furniture and home accessories, including mango, sheesham and acacia wood tables, chairs, beds, storage units, shelving and décor for living rooms, dining rooms, bedrooms,…
Targets UK homeowners and renters furnishing living, dining, bedroom, hallway, garden and home-office spaces, with some appeal to small offices buying desks, shelving and storage.
Financial Health
HealthyHealthy · Growing · 0% CAGR over 4y
Location
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Financial sub-scores
Computed from 5 filingsRetailer of baby and nursery products through an online store, including prams, pushchairs, car seats, nursery furniture, bedding, toys, feeding equipment, travel cots, and related accessories from…
Sells to consumers, primarily expectant parents, new parents and families buying prams, car seats, nursery furniture, feeding, travel and baby care products.
Financial Health
StableStable · Hiring · 7% CAGR over 4y
Location
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Financial sub-scores
Computed from 3 filingsDesigns and sells country-style clothing, footwear and accessories through an online retail store. Product range includes tweed jackets, shirts, boots, hats, equestrian wear, outdoor apparel, and pet…
Serves consumers seeking British country and outdoor styles, including women, men and children, plus rural lifestyle shoppers such as equestrians, farmers, shooters, walkers and pet owners.
Financial Health
StableStable · -29% CAGR over 2y
Location
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Financial sub-scores
Computed from 4 filingsDesigns and retails kitchen gadgets and small domestic appliances through an e‑commerce store, including air fryers, slow cookers, kettles, toasters, coffee makers, bread makers, and other home and…
Serves UK consumers and households shopping online for kitchen gadgets, small kitchen appliances and home essentials.
Financial Health
StrongStrong
Location
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Showing 50 of 334 — +284 more with verified decision-maker contacts, live data, and CRM sync.
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Showing 50 of 334 — +284 more with verified decision-maker contacts, live data, and CRM sync.
How Klarna usage is detected
Company data
Detected companies are joined to UK Companies House records and XBRL accounts data. Revenue and headcount figures come from the most recent filed accounts; where the company has not filed, values are estimated using a model trained on filed history and peer benchmarks and are labelled as estimates.
Detection
Firmbase crawls the public website of actively-trading UK companies and fingerprints the technologies present: tracking scripts, embedded forms, chat widgets, CMS markers and similar signatures. A company is included in this list when one or more of the technology's signatures are found on its site; closely-related variants of the same product are grouped under one name. Detection covers what is visible on the public web — a company using the technology purely internally, with no website footprint, will not appear. Counts are therefore a conservative floor, not a ceiling. e-commerce companies are identified using Firmbase's semantic classification of company activity, built from filings, websites and registered SIC codes rather than SIC codes alone. The detected counts and share figures on this page are computed within that sector cohort, so "share" always means share of e-commerce companies with a detectable system — not of all UK companies.
Freshness
Websites are re-crawled on a rolling basis and the underlying company data is refreshed from Companies House continuously; filings appear within days of submission. The list and its statistics are regenerated when the detected cohort moves meaningfully. You can see the last-updated timestamp near the top of the page.
Klarna is a trademark of its respective owner. Firmbase is not affiliated with, sponsored by, or endorsed by the trademark owner.
UK E-Commerce by Payments
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Frequently asked questions
How many UK e-commerce companies use Klarna?
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How is Klarna usage detected?
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