B2B Companies Using Klarna in the UK: 175 Active Firms (2026)
B2B companies using checkout payment technology sell to business customers online, with UK compliance shaped by PECR, UK GDPR and sector rules.
Procurement, finance, e-commerce and sales-operations teams tend to be the practical owners, because the checkout layer affects credit terms, invoice handling, basket conversion and account-based purchasing rather than only card acceptance. Among B2B adopters, use of this buy-now-pay-later system usually signals an online sales motion beyond brochureware: priced catalogues, repeat ordering, order-status messaging, and a finance function willing to outsource part of payment presentation. Engagements are commonly smaller than core ERP programmes but more operationally sensitive than a marketing tag, because checkout changes customer terms, reconciliation flows and support scripts.
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The UK adoption picture covers 175 actively trading B2B companies running this checkout system. Their reported employment totals 1,857 people, with headcount present for 100% of covered firms. Within buy-now-pay-later usage for this sector, the system ranks first, at 93.6% in a comparison base of 187; a smaller alternative appears at 9.1%. Regional distribution is fairly dispersed: North West and London each account for 14.9% of adopters, followed by South East at 12.0%, South West at 10.9%, and Yorkshire and The Humber at 10.3%.
B2B adoption sits inside a mixed regulatory setting rather than a common licensing regime. The relevant rulebook depends on the underlying activity: financial services, telecoms, data processing and professional services each bring their own obligations. PECR and ICO guidance matter because checkout adoption often sits alongside email remarketing, abandoned-basket prompts and sales follow-up. Electronic mail to corporate subscribers does not require PECR consent, but senders must identify themselves and provide a valid opt-out route. UK GDPR still applies to business-contact data, and live B2B calls need screening against CTPS and TPS where objections may be registered.
Adoption appears likely to remain tied to B2B sellers that want consumer-style checkout without rebuilding credit and reconciliation processes internally. The cohort tends to sit between simple catalogue sites and enterprise procurement portals, so switching decisions may be shaped by integration burden, margin sensitivity and the need to keep account terms visible to buyers. Bundling by payment providers could reduce the number of standalone checkout choices, while privacy and marketing rules keep pressure on consent capture, contact governance and post-purchase messaging. More cautious finance teams may still prefer invoice-led flows where customer relationships are contract-led.
Adoption by company size
Adoption of Klarna rises with company size across the trading UK B2B companies in this cohort. 0.1% of the 76,784 companies with under 10 employees run Klarna (105 detected). 0.2% of the 31,788 companies with 10–50 employees run Klarna (56 detected). 0.2% of the 3,773 companies with over 50 employees run Klarna (7 detected). That is a 0.1% gap between the over 50 employees and under 10 employees bands.
175
Active firms
2026
93.6%
Of detected Buy now pay later share
UK B2B
7
Median headcount
Filed accounts
408
Verified contacts
Across this cohort
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Key facts
About 16% of the trading cohort reports turnover above £5M (28 of 175 firms) — the rest sits below that revenue band.
5% of the cohort was incorporated since 2022 (10 firms), so a sizeable share is in its first few filing cycles.
Within 187 B2B firms with a detectable buy-now-pay-later system, this checkout technology accounts for 93.6% of detections; the next detected system is at 9.1%.
North West and London each account for 14.9% (26) of B2B running this checkout system, followed by South East at 12.0% (21).
Tag-management and site-infrastructure tools are common in the stack, appearing on 60.6% (106) and 60.0% (105) of the cohort respectively.
Sector tags overlap, with Wholesale & Distribution covering 49.1% (86) of the cohort and E-commerce covering 35.4% (62).
ICO guidance says B2B emails or texts to corporate bodies do not need PECR consent, but senders must identify themselves, provide a valid opt-out address and screen live marketing calls against CTPS and TPS where required.
Payments market share among UK B2B
Share of the 187 UK B2B with a detectable system. As of June 2026.
What else do Klarna-running B2B run?
Share of the 175 Klarna-running UK companies where each technology was also detected. As of June 2026.
Where Klarna B2B 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
£1M
Median UK turnover
16%
Above £5M turnover
10
Incorporated since 2022
408 verified decision-maker contacts
across these 175 companies, with emails available in Firmbase. Filter by role, seniority and stack.
Top UK B2B 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 2 filingsSupplies wholesale automotive workshop consumables and parts to garages and dealerships, including batteries, bulbs, brake fluids, lubricants, cleaners, adhesives, tapes, wheel weights, valves,…
Serves B2B customers in the UK automotive aftermarket, including franchised main dealers, service centres, independent specialists, garages and workshops for premium and mainstream vehicle brands.
Financial Health
HealthyHealthy · 0% CAGR over 1y
Location
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Computed from 5 filingsSupplies food packaging and catering disposables to restaurants, cafes and takeaway businesses. Products include paper and plastic cups and lids, bagasse containers, kraft boxes, carrier bags, foil…
Sells B2B to restaurants, cafés, takeaways, coffee shops, delivery services and other catering outlets needing wholesale food packaging, disposables and related supplies, with some products also…
Financial Health
StableStable · 0% CAGR over 4y
Location
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Computed from 5 filingsSupplies and distributes alcoholic and non‑alcoholic beverages to trade customers. Offers beers, wines, spirits, ciders, alcopops, soft drinks and kegs, along with snacks and bar consumables, with…
Serves on- and off-trade businesses in England, including pubs, bars, restaurants, clubs, convenience stores and other licensed retailers needing wholesale drinks supply.
Financial Health
StrongStrong · Growing, Hiring · 11% CAGR over 5y
Location
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Computed from 5 filingsOnline retailer supplying envelopes and postal packaging, including padded envelopes, board-backed mailers, mailing bags, boxes and packaging accessories. Also offers custom printed and branded…
Serves UK businesses needing bulk or branded mailing supplies, including ecommerce sellers, offices and marketing teams, alongside consumers and event/wedding stationery buyers purchasing online.
Financial Health
HealthyHealthy · -3% CAGR over 4y
Location
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Computed from 3 filingsSupplies takeaway and ice cream packaging, ingredients, and equipment to retail and catering businesses. Product range includes ice cream tubs, cups and lids, cones, syrups, toppings, smoothie and…
Serves B2B retail and catering trade customers, including takeaway food outlets, ice cream parlours, cafes, bakeries and foodservice operators buying packaging, sundries and commercial equipment.
Financial Health
StrongStrong · Growing, Hiring · 7% CAGR over 2y
Location
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Computed from 4 filingsSupplies janitorial and cleaning products, equipment and machinery to businesses and public sector organisations. Offers chemicals, washroom supplies, paper products, PPE, floorcare equipment,…
Sells primarily to businesses and public sector procurement teams buying janitorial supplies in bulk, including local authorities, facilities managers, offices, hospitality/catering venues,…
Financial Health
StableStable · -1% CAGR over 3y
Location
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Computed from 4 filingsManufactures and supplies home textiles including towels, bed linen, duvet covers, pillows, mattress protectors, table linen and bath robes. Sells wholesale and retail to hotels, healthcare…
Serves B2B and retail customers, including wholesalers, retailers, laundries, hotels, hospitality operators, healthcare providers, nursing homes, care homes and similar institutions across the UK.
Financial Health
HealthyHealthy · -8% CAGR over 3y
Location
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Computed from 5 filingsSupplies professional cleaning equipment and janitorial products, including detergents, disinfectants, floor care chemicals, washroom supplies, paper products, brushes, mops, bins, and dispensing…
Serves professional cleaners and janitorial buyers, from government bodies and facilities teams to sole traders, including catering, hospitality, automotive valeting, washroom, floor care and waste…
Financial Health
WeakWeak · -4% CAGR over 4y
Location
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Computed from 4 filingsSupplies building and construction materials through builders’ merchant warehouses, including bricks, timber, aggregates, roofing products, plumbing and heating supplies, drainage, insulation, tools,…
Serves trade and retail customers, including builders, plumbers, electricians, landscapers, roofers, joiners and DIY/home improvement buyers purchasing through branches, showrooms and online.
Financial Health
StableStable · Hiring · 10% CAGR over 3y
Location
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Computed from 5 filingsSupplies steel and concrete lintels, structural steel beams, and related building materials to the construction industry. Also sells site equipment including scaffolding components, temporary…
Sells primarily to trade buyers in the UK construction sector, including builders, contractors, scaffolders and site teams needing lintels, scaffolding, temporary fencing and general site supplies.
Financial Health
StableStable · -65% CAGR over 4y
Location
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Computed from 3 filingsSupplies retail and fashion businesses with wholesale shop equipment and packaging, including mannequins, clothes hangers, display systems, shop fittings, point‑of‑sale materials, carrier bags, and…
Sells to businesses in the UK retail and fashion sectors, including shops, boutiques, e-commerce retailers and visual merchandising teams, as well as buyers needing packaging, display, shopfitting,…
Financial Health
WeakWeak · -2% CAGR over 2y
Location
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Computed from 5 filingsSupplies engineering fasteners and industrial products through an online store, including socket screws, bolts, nuts, washers and anchoring systems, as well as tools, personal protective equipment,…
Serves trade and business buyers in engineering, manufacturing, construction and maintenance, including procurement teams, workshops and contractors.
Financial Health
HealthyHealthy · Hiring · 78% CAGR over 4y
Location
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Computed from 5 filingsSupplies professional hairdressing and beauty products through an online store, including hair colour, styling tools, salon electricals, nail products, waxing and tanning supplies, hair extensions,…
Sells trade-only to professional hairdressers, beauty therapists, nail technicians, tanning specialists, salons, barbers and students needing salon supplies, equipment and training products.
Financial Health
StrongStrong · Hiring · 15% CAGR over 4y
Location
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Computed from 3 filingsSupplies equipment, tools and consumables for surface‑mount and electronics assembly, including adhesives, soldering systems, fume extraction units, torque drivers, inspection microscopes, ESD…
Serves B2B customers in electronics assembly and SMT/PCB manufacturing, including production engineers, maintenance teams and procurement buyers sourcing factory equipment and consumables.
Financial Health
StrongStrong · Growing · 0% CAGR over 2y
Location
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Computed from 3 filingsSupplies personal protective equipment and workwear through an online store, including safety boots, hi‑visibility clothing, gloves, hard hats, first aid kits, goggles, tools and industrial safety…
Serves UK businesses and individual buyers, including construction firms, facilities management teams, nursing homes, healthcare and first aid providers, transport and automotive operators, offices,…
Financial Health
StableStable · -15% CAGR over 2y
Location
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Computed from 5 filingsSupplies dental equipment, instruments, and consumables through an online store, including handpieces, ultrasonic scalers, curing lights, endodontic files, sterilisation products, imaging devices,…
Serves dental clinics, dental practices and dental professionals across the UK, including buyers responsible for surgery equipment, instruments, consumables, endodontics, sterilisation and imaging…
Financial Health
StrongStrong · Hiring · 25% CAGR over 4y
Location
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Computed from 4 filingsSupplies CCTV and video surveillance equipment, access control systems, intruder alarms, and related security products through an online store, including cameras, recorders, detectors, intercoms,…
Sells B2B to security installers, electrical contractors and trade buyers across the UK needing CCTV, access control, intruder alarm, networking, lighting and related security products.
Financial Health
StrongStrong · -90% CAGR over 2y
Location
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Computed from 5 filingsSupplies commercial kitchen and refrigeration equipment through an online store, including range cookers, fryers, ovens, dishwashers, griddles, ice machines, and display fridges, along with…
Sells to commercial kitchen operators and foodservice businesses needing catering and refrigeration equipment, including restaurants, takeaways, cafés and other hospitality venues across the UK.
Financial Health
StrongStrong · Growing, Hiring · 3% CAGR over 4y
Location
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Computed from 5 filingsOperates an online store supplying industrial bearings, belts, and power transmission components. Product range includes ball and roller bearings, housed units, pulleys, couplings, roller chain, and…
Serves trade and retail buyers in the USA and UK needing industrial, agricultural, automotive, lawn and garden, and power transmission components, including maintenance teams, repair workshops,…
Financial Health
HealthyHealthy · Hiring · 17% CAGR over 4y
Location
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Computed from 3 filingsSupplies welding and metal fabrication equipment and consumables through an online store, including MIG, TIG and ARC welders, torches, gas equipment, abrasives, power tools, PPE and industrial…
Serves UK welding, metal fabrication and metalworking businesses, including fabricators, welders, engineering workshops and trade buyers needing industrial tools, PPE and workshop consumables.
Financial Health
StrongStrong · Hiring · 22% CAGR over 2y
Location
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Computed from 5 filingsSupplies workwear, personal protective equipment (PPE), and safety gear through an online store. Product range includes safety boots, high‑visibility clothing, helmets, gloves, respiratory…
Serves UK businesses and workers across industrial sectors needing workwear and PPE, including construction, manufacturing, warehousing, food, healthcare, forestry, marine and railway environments.
Financial Health
StableStable · 1% CAGR over 4y
Location
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Computed from 4 filingsSells power tools and equipment through an online store, including drills, saws, grinders and other electric tools, along with accessories such as drill bits, blades and hand tools. Distributes…
Sells to UK consumers and trade buyers seeking power tools, accessories and equipment online, including home users, farmers and professionals needing brands such as DeWalt, Makita and Milwaukee, with…
Financial Health
HealthyHealthy · Hiring · 9% CAGR over 3y
Location
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Computed from 3 filingsSupplies wood coatings, stains, lacquers and primers, alongside industrial paint systems and finishing products. Also distributes spray guns, pumps, spray booths, blasting equipment, abrasives,…
Serves trade and individual buyers, with account options for personal and business customers. Targets external and internal joinery businesses, industrial users, paintshops, finishers and coating…
Financial Health
StableStable · Profitable · 5% CAGR over 2y
Location
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Computed from 3 filingsSupplies electrical and lighting products through an online wholesale and retail store. Offers smart home devices, switches and sockets, LED lighting, cables, consumer units, security cameras,…
Sells to electricians, electrical contractors, lighting and security installers, and homeowners or DIY buyers across the UK seeking electrical, lighting, smart home and security products.
Financial Health
StableStable · -3% CAGR over 2y
Location
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Computed from 3 filingsSupplies tools, equipment and consumables for the signage, vehicle wrapping and print industries through an online store, including cutting tools, blades, tapes, adhesives, cleaning products, sign…
Sells to B2B trade customers in the signage, vehicle wrap, window tint, architectural wrap and print industries, including signmakers, installers, wrappers and print shops in the UK and worldwide.
Financial Health
HealthyHealthy · Growing · 0% CAGR over 2y
Location
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Computed from 3 filingsSupplies wholesale giftware and homeware to retailers through an online trade platform. Product range includes candles, incense, ornaments, garden decor, mugs, seasonal decorations, spiritual items…
Serves B2B trade buyers including independent retailers, gift shops, florists, garden centres, charities, museums and tourist attractions, from small shops to bulk wholesale purchasers.
Financial Health
HealthyHealthy · Profitable · 0% CAGR over 2y
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Computed from 5 filingsSources, imports, and supplies specialty green coffee beans to coffee roasters and businesses. Offers wholesale purchasing through an online platform, with coffees sourced from producing regions…
Sells B2B to coffee roasting businesses and wholesale green coffee buyers seeking specialty coffees, curated lots, decaf, organic and origin-specific beans.
Financial Health
StableStable · -67% CAGR over 4y
Location
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Computed from 5 filingsManufactures and supplies pop‑up gazebos, instant shelters, marquees, and inflatable structures for events and commercial use. Provides custom printing and branding for gazebos, flags, banners, and…
Sells to businesses and consumers needing gazebos, branded shelters, marquees and event equipment for events, exhibitions, gardens and commercial use, including organisations buying custom-printed…
Financial Health
StableStable · -10% CAGR over 4y
Location
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Computed from 4 filingsSupplies damp proofing and basement waterproofing products through an online store, including membranes, injection creams, drainage systems, sump pumps, ventilation units, structural repair…
Sells online to UK trade contractors, builders, surveyors and property owners managing damp, basement, structural repair, condensation, timber treatment, flooring, green roof and flood-protection…
Financial Health
StableStable · 3% CAGR over 3y
Location
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Computed from 5 filingsSupplies HVAC components and control equipment through an online store, including valves, actuators, sensors, thermostats, humidifiers, refrigeration controls, and ventilation control parts, plus…
Serves B2B HVAC, air handling and ventilation trade customers, including contractors, controls engineers, facilities teams and maintenance providers buying components and spares online with UK…
Financial Health
HealthyHealthy · -62% CAGR over 4y
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Computed from 3 filingsOperates an online retail store selling tools and equipment for trade and home use. Offers power tools, hand tools, garden tools, tool storage, workwear, welding equipment, and accessories from…
Serves tradespeople, contractors, workshop users, gardeners and DIY consumers in the UK and Ireland, including buyers of tools, workwear, automotive equipment and garden machinery.
Financial Health
WeakWeak · -19% CAGR over 2y
Location
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Computed from 5 filingsSupplies wholesale wedding and event decorations through an online store, including chair covers, chair sashes, tablecloths, table runners, centrepieces, candelabras, and related venue styling…
Sells to UK wedding and events businesses, including venue decorators, chair cover hire firms, party suppliers and organisers sourcing wholesale décor, linens, chair covers and favours.
Financial Health
StrongStrong · Hiring · 19% CAGR over 4y
Location
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Computed from 5 filingsSupplies commercial cleaning equipment and chemicals, including carpet cleaning machines, scrubber dryers, industrial vacuum systems, pressure washers and accessories. Sells products online and…
Serves B2B customers in the cleaning and facilities management sector, including commercial cleaning contractors, carpet cleaners and organisations needing floorcare, vacuuming, gutter, window and…
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StableStable · 0% CAGR over 4y
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Computed from 5 filingsSupplies hairdressing and beauty salon products and equipment through an online store, including scissors, clippers, hairdryers, styling tools, hair colour products, barbering supplies, and salon…
Serves hair and beauty professionals, salon owners, barbers, beauticians, nail technicians and training students, with both B2B salon buyers and individual trade or learner customers.
Financial Health
WeakWeak · -5% CAGR over 4y
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Computed from 3 filingsSupplies screen printing equipment, inks and consumables through an online store. Products include automatic and manual presses, dryers, screens and mesh, emulsions, squeegees, heat presses, DTG/DTF…
Sells to UK screen printing businesses, garment decorators and print shops, plus craft and hobby users needing screen print, DTF/DTG and heat press supplies and equipment.
Financial Health
HealthyHealthy · Growing · 0% CAGR over 2y
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Computed from 5 filingsSupplies automotive towing equipment including towbars, vehicle‑specific wiring kits, 12S supplementary kits, sockets, adaptors and trailer electrics testers. Also provides diagnostic and towbar…
Serves UK garages, workshops and authorised towbar installers, plus vehicle owners and drivers needing towing-related parts, diagnostics and coding support.
Financial Health
StableStable · Hiring · 4% CAGR over 4y
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Computed from 5 filingsSupplies arborist and landscaping equipment, including tree climbing gear, chainsaw protective clothing, ropes, rigging hardware, hand tools and safety equipment. Sells products online to tree…
Sells to UK arborists, tree surgeons, estate managers, landscape contractors and grounds-maintenance professionals.
Financial Health
WeakWeak · -65% CAGR over 4y
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Computed from 4 filingsSupplies marine and offshore components including ball, gate and check valves, flanges, pipe fittings, and stainless steel fasteners. Sells accessories such as cutting discs and tools through an…
Targets marine and offshore businesses, including shipyards, vessel operators, engineers, and maintenance/procurement teams placing UK and EU online or phone orders.
Financial Health
StrongStrong · Hiring · 26% CAGR over 3y
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Computed from 5 filingsProvides accounting software combined with accountant support for small businesses. Platform automates bookkeeping, categorises transactions, generates financial insights, manages invoices and…
Sells to UK small business owners needing accounting, bookkeeping and tax support. Targets business customers that want an all-in-one finance solution, including firms switching from another…
Financial Health
StrongStrong · Growing, Hiring · 81% CAGR over 4y
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Computed from 5 filingsSupplies professional hairdressing products through an online store, including human hair extensions, extension tools and rings, colouring foils, scissors, brushes, and aftercare products such as…
Sells to professional hair salons, hair extension technicians, and mobile or freelance stylists seeking salon supplies, hair extensions, foils, colour tools and aftercare products.
Financial Health
StrongStrong · Growing, Hiring · 19% CAGR over 4y
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Computed from 5 filingsSupplies diamond tools, power tools and construction machinery for building and landscaping work, including drills, saws, grinders, generators, pumps and compaction equipment. Sells accessories, hand…
Serves trade and consumer buyers, including construction contractors, builders, landscapers, tilers, concrete and road-work crews, woodworkers and DIY users shopping online or in-store.
Financial Health
StrongStrong · Hiring · 22% CAGR over 5y
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Computed from 5 filingsOperates an online store selling industrial adhesives, abrasives, sealants and tapes, along with applicators, sanding products, wood repair materials, lubricants and workshop consumables for…
Sells to trade and industrial buyers needing adhesives, abrasives, sealants and related consumables, including woodworking, manufacturing, construction and offsite building firms, as well as other…
Financial Health
StrongStrong · Growing, Hiring · 19% CAGR over 4y
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Computed from 3 filingsOnline retailer of 3D printing equipment and materials, including desktop 3D printers, filaments, resins, SLS powders and spare parts. Also sells scanners, laser engravers, CNC machines, and related…
Serves private consumers and business customers across Europe buying 3D printing, scanning, CNC, laser engraving and related maker equipment, including hobbyists, makers and organisations needing…
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StrongStrong · Growing · 0% CAGR over 2y
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Computed from 5 filingsManufactures paper hygiene products including toilet rolls, kitchen rolls and facial tissues. Converts paper into finished consumer and bulk products and sells them through an online store and…
Targets UK households buying household paper goods in bulk online, plus trade and wholesale buyers seeking account pricing and pallet deals.
Financial Health
StrongStrong · Growing, Hiring · 5% CAGR over 4y
Location
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Computed from 4 filingsSupplies engraving machines, materials, and consumables, including Gravotech equipment, cutters, plastics, and metals. Sells wholesale giftware and blanks such as glassware, hip flasks, keyrings,…
Serves B2B customers in the engraving and personalised gift trade, including engravers, giftware retailers, trophy and awards suppliers, and businesses reselling blank, printed, engraved or dropship…
Financial Health
StrongStrong · Growing, Hiring · 22% CAGR over 3y
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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
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Computed from 5 filingsSupplies sublimation printing equipment and blanks, including heat presses, vinyl cutter plotters, laminators, UV printers, transfer paper, inks, and printable items such as mugs, bottles, textiles,…
Serves UK businesses and individuals involved in sublimation printing, signage and personalised products, including print shops, sign makers, crafters and start-ups.
Financial Health
HealthyHealthy · -68% CAGR over 4y
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Computed from 5 filingsSells automotive, leisure, and specialist batteries through an online store, including car, commercial vehicle, marine, mobility scooter, and solar energy storage batteries, along with chargers,…
Sells to UK consumers and trade buyers needing vehicle, leisure, mobility, marine, agricultural, fleet, solar and off-grid battery products, including car owners, caravan and campervan users, boat…
Financial Health
WeakWeak · 0% CAGR over 4y
Location
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Supplies water butts, rainwater harvesting tanks, composting systems, wormeries, pumps, raised garden beds, and recycling caddies, along with related accessories and spare parts, through an online…
Serves mainly trade customers and business account holders seeking water, composting, rainwater harvesting, garden and recycling storage ranges, with account setup and trade enquiry routes for…
Financial Health
N/AN/A
Location
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Financial sub-scores
Computed from 5 filingsSupplies welding equipment, consumables, and related accessories through an online store. Product range includes MIG, TIG and arc welders, plasma cutting equipment, torches and spares, welding wire…
Sells to trade and industrial buyers needing welding equipment, torch parts, gas gear, abrasives and PPE, including welders, fabrication workshops, maintenance teams and on-site engineering users.
Financial Health
StableStable · Hiring · 3% CAGR over 4y
Location
Unlock all 175 leads
Showing 50 of 175 — +125 more with verified decision-maker contacts, live data, and CRM sync.
Unlock all 175 leads
Showing 50 of 175 — +125 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. B2B 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 B2B 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 B2B by Payments
Other B2B technology
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Frequently asked questions
How many UK B2B companies use Klarna?
What share of UK B2B companies run Klarna?
How is Klarna usage detected?
What size B2B companies use Klarna in the UK?
What do Klarna-running B2B companies also run?
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