Merchant Acquiring Companies in the UK: 144 Active Firms (2026)
Merchant acquiring companies in the UK enable businesses to accept card and digital payments by underwriting merchants and settling transactions.
Demand tends to sit with finance, operations and commercial teams that need card acceptance to work across in-store, online and mobile channels without leaving reconciliation to manual processes. The buyer set is mostly business-to-business merchants rather than consumers: independent retailers, hospitality operators, ecommerce sellers, marketplace operators and service firms with repeat transaction flow. Engagements are usually operational rather than experimental, covering onboarding, underwriting, settlement, chargeback support, reporting and integrations into point-of-sale, ecommerce and accounting systems. Larger prospects expect merchant-risk controls and service coverage, while smaller firms tend to value quick setup, clear pricing and fewer reconciliation exceptions.
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The UK market here is a compact specialist cohort: 144 actively trading merchant acquiring firms. Reported headcount totals 1,340, pointing to a category where operational staffing is part of the model rather than an afterthought. That gives the list a different profile from broad payments software or ecommerce tooling, where many entrants can remain lightly staffed for longer. Acquirers need underwriting, risk operations, settlement processes and merchant support from the outset, so the operating base tends to look more like regulated financial infrastructure than a purely self-serve software category.
Merchant acquiring is shaped by regulated payments infrastructure, but the practical burden falls unevenly across the cohort. Firms handling underwriting and settlement need controls for merchant due diligence, transaction monitoring, fraud exposure and chargeback loss, while referral-led or software-adjacent operators may sit closer to distribution and integration. Contract terms matter because merchants often experience acquiring through settlement timing, reserve requirements, dispute handling and pricing changes rather than through the underlying scheme rules. Market structure is therefore partly technical and partly credit-like: acceptance works only if risk appetite, operational controls and reconciliation processes fit the merchant mix.
Consolidation appears likely to remain a feature because acquiring rewards scale in risk operations, scheme connectivity and merchant servicing, while smaller operators can struggle to maintain margin if their only advantage is distribution. Newer entrants tend to attach acquiring to vertical software, embedded finance or marketplace infrastructure rather than offer it as a standalone service. That makes the boundary between acquirer, payment facilitator and commerce software less tidy. Scrutiny of fraud, disputes and merchant onboarding has been rising across payments, so operational discipline may matter as much as headline transaction volume for firms trying to move beyond specialist niches.
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
Active director count is the full Companies House board, so it can be higher than the number of names listed — we leave out nominee and formation-agent directors, who aren’t worth contacting. It’s blank for the small number of companies whose officers we haven’t fetched yet.
You’re charged per business, not per row. Where a business trades through several registered companies you get every one, and the Group Primary column marks one row per business — filter to those and the count matches your invoice. Rows sharing a website are not automatically one business: franchises and multi-site operators each count separately, and where names don’t prove a relationship we count them apart rather than guess.
144
Active firms
2026
21
Above £5M
Revenue threshold
23
New incorporations
Since 2022
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Key facts
About 14% of the trading cohort reports turnover above £5M (21 of 144 firms) — the rest sits below that revenue band.
15% of the cohort was incorporated since 2022 (23 firms), so a sizeable share is in its first few filing cycles.
Merchant acquiring sits between merchants, card schemes and issuing banks, with acquirers handling authorisation, settlement and merchant risk.
Underwriting appetite is shaped by settlement timing, fraud exposure, refunds and chargeback risk across different merchant categories.
Many go-to-market models bundle acquiring with point-of-sale, online checkout or platform payments rather than selling acquiring as a stand-alone service.
Procurement tends to turn on acceptance rates, settlement speed, pricing clarity and dispute handling as much as headline transaction fees.
Top UK Merchant Acquiring companies
Financial sub-scores
Computed from 5 filingsProvides payment processing infrastructure and merchant services for businesses. Offers in‑store and online payment acceptance, POS and SoftPOS solutions, payment gateways, subscription billing,…
Serves B2B merchants in retail, hospitality, service sectors and digital businesses, plus payment partners such as ISOs, ISVs/SaaS providers and PSPs across the UK, EU, EEA and USA.
Financial Health
StrongStrong · 62% CAGR over 3y
Location
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Provides payment processing solutions for businesses, including card payment terminals, online payment gateways, virtual terminals, payment links, and ePOS systems, with integrations for mobile,…
Serves B2B merchants including hospitality venues, hotels, restaurants, retailers, eCommerce stores, builders’ merchants, online competition sites and charities, plus partners integrating payment…
Location
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Financial sub-scores
Computed from 5 filingsProvides payment processing and merchant acquiring services for businesses, supporting in‑person, phone and online transactions. Also offers open banking payment solutions and a business current…
Serves businesses accepting payments face-to-face, by phone or online, as well as ISVs and resellers offering payment solutions to their own business customers.
Financial Health
StrongStrong
Location
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Provides card payment processing solutions for businesses, including card machines, Android smart terminals, online payment gateways, virtual terminals and pay‑by‑link tools. Also offers EPOS…
Serves UK merchants and small to mid-sized businesses, particularly in retail, hospitality, healthcare and service industries, that need in-store or online payment acceptance.
Financial Health
N/AN/A
Location
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Financial sub-scores
Computed from 5 filingsProvides payment processing and acquiring services for businesses, enabling acceptance of online and point‑of‑sale payments. Offers card payouts, pay‑by‑link, subscription billing, in‑app payments,…
Serves businesses and ecommerce partners needing payment services, including online retail, travel and hospitality, online gaming, consumer lending, money services, DIY and hardware, and insurance…
Financial Health
StableStable · Hiring · 60% CAGR over 4y
Location
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Financial sub-scores
Computed from 4 filingsProvides merchant acquiring and online payment processing services, including card payment gateway integration, multi‑currency transaction processing, recurring and one‑click payments, card‑to‑card…
Serves B2B customers: online merchants, ecommerce sites and mobile-app businesses seeking international card payment acceptance, multi-currency processing and merchant accounts.
Financial Health
HealthyHealthy · Profitable, Hiring · 6% CAGR over 3y
Location
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Financial sub-scores
Computed from 5 filingsProvides payment processing services for businesses, including card machines, online and e‑commerce payments, and merchant accounts. Offers tools such as pay‑by‑link, QR code, SMS and recurring…
Sells to sole traders, start-ups, SMEs, partnerships and larger enterprises needing merchant accounts across in-person, online, phone or mail-order sales channels, including ecommerce merchants and…
Financial Health
HealthyHealthy · Hiring · 90% CAGR over 4y
Location
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Financial sub-scores
Computed from 5 filingsProvides payment processing and merchant acquiring services, including card acceptance for Visa, Mastercard and UnionPay, multi‑currency accounts, and issuance of virtual and physical payment cards.…
Serves businesses and individuals needing multi-currency payment accounts and cards, with a focus on merchants accepting card payments worldwide and companies operating across Europe, APAC and North…
Financial Health
StrongStrong · Growing, Hiring · 5% CAGR over 4y
Location
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Financial sub-scores
Computed from 5 filingsProvides embedded payment processing for online platforms and marketplaces, enabling acceptance of card and digital wallet payments, seller onboarding, automated split payments, subscription and…
Serves B2B marketplaces, platforms and merchants that need embedded payments, seller onboarding, split payments and transaction monetisation, including enterprise platform operators.
Financial Health
HealthyHealthy
Location
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- EVO Payments09221814
- EVO Payments13527680
Financial sub-scores
Computed from 3 filingsProvides payment processing and merchant acquiring services for businesses, enabling acceptance of card payments in-store, online and mobile. Offers payment terminals, e‑commerce integrations,…
Serves UK businesses of all sizes that need to accept customer payments, including in-store retailers, online merchants, mobile traders, and partners serving business clients.
Financial Health
StrongStrong · Hiring · 41% CAGR over 2y
Location
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Provides payment processing solutions for businesses, including card payment machines, online payment systems, payment gateways, virtual terminals and pay‑by‑link services, as well as EPOS systems…
Serves SMEs across the UK that need to accept in-person, online or phone card payments, including retailers, hospitality operators and other service businesses seeking payment infrastructure and…
Financial Health
N/AN/A
Location
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- Trust Payments11976895
Provides payment processing and commerce technology for businesses, including online payment gateways, point‑of‑sale and mobile payments, card acquiring, shopping cart integrations, and tools for…
Sells to businesses and software partners, including retailers, hospitality operators, gaming firms, financial services, travel, crypto, education, forex, debt collection and call centre…
Financial Health
N/AN/A
Location
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Financial sub-scores
Computed from 2 filingsProvides merchant payment services including card payment processing, point‑of‑sale (POS) solutions under the myPOS brand, a payment management app, and business cash advances. Also supplies payment…
Financial Health
HealthyHealthy · -18% CAGR over 1y
Location
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Financial sub-scores
Computed from 5 filingsProvides online payment processing and fintech infrastructure for businesses, including card acquiring, hosted checkout, payment links, POS payments, global payouts, card issuing, and multi‑currency…
Serves businesses in eCommerce, marketplaces, iGaming and online gaming, online trading, creator economy, online travel, influencer marketing and B2B payments, as well as developers and payment…
Financial Health
StableStable · -70% CAGR over 4y
Location
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Provides payment processing services for merchants, including online payment gateways, point‑of‑sale transactions, payment links, and card payouts. Offers multi‑currency acceptance, integration…
Serves B2B merchants in Europe and the UK, including financial brokerages, forex and CFD firms, gaming and gambling operators, hospitality businesses, restaurants, bars and retailers.
Financial Health
N/AN/A
Location
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Financial sub-scores
Computed from 4 filingsProvides payment processing technology for businesses, including card machines for in‑person transactions, online and remote payment tools, QR code and payment link solutions, and integrations with…
Serves UK businesses with 1–69 locations and enterprise operators, especially hospitality venues, quick- and full-service restaurants, dental practices, visitor attractions and personal services…
Financial Health
StrongStrong · Growing, Hiring · 6% CAGR over 3y
Location
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Financial sub-scores
Computed from 5 filingsProvides card payment processing solutions for businesses, including merchant accounts, payment gateways, POS and standalone terminals, IVR phone payments, and APIs for accepting in‑store, online,…
Serves merchants and public sector organisations across e-commerce, retail, government, education, utilities, charities, parking, airlines, healthcare, gaming, sport and hospitality, including…
Financial Health
StrongStrong · Growing · 0% CAGR over 4y
Location
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- Unified Finance10805527
Financial sub-scores
Computed from 4 filingsProvides digital payment and payout services for businesses, including card acquiring, bank and card payouts, mass payments, foreign exchange, and remittance. Operates a payment gateway platform with…
Serves B2B customers including UK-based SMEs, e-commerce merchants, medium-to-large marketplaces, affiliate networks, travel agencies, global service providers, international trade firms and…
Financial Health
HealthyHealthy · Hiring · 6% CAGR over 4y
Location
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- ElavonFC027535
Financial sub-scores
Computed from 2 filingsProvides merchant payment processing services, enabling businesses to accept card and digital payments in person, online and via mobile. Offers payment gateways, fraud and security tools, reporting…
Serves small businesses, enterprises, public sector bodies and nonprofits across retail, eCommerce, restaurants, hospitality, healthcare, education, automotive and transit, plus partners such as…
Financial Health
WeakWeak · Hiring · 20% CAGR over 1y
Location
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Financial sub-scores
Computed from 2 filingsProvides payment processing and merchant acquiring services for e‑commerce businesses. Offers multi‑currency payment methods, business accounts, card issuing and payout services through an electronic…
Serves B2B merchants and digital brands in eCommerce, travel and hospitality, gaming, subscription services, transportation and entertainment, especially businesses needing multi-currency payments…
Financial Health
StableStable · Hiring · 142% CAGR over 1y
Location
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- PayXpert06613211
Financial sub-scores
Computed from 3 filingsProvides payment processing solutions for businesses, including online, in‑app and in‑store payments. Offers POS terminals, support for card, wallet and alternative payment methods, multi‑currency…
Serves B2B merchants, including ecommerce, in-app and physical retail businesses, that accept customer payments online and in store, use multiple currencies, or target international customers with…
Financial Health
WeakWeak · Hiring · 12% CAGR over 2y
Location
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Financial sub-scores
Computed from 5 filingsProvides electronic money and payment processing services for businesses, including card acquiring and card processing, mass payout services via Visa Direct and Mastercard MoneySend, and integration…
Serves B2B customers across diverse industries and growth stages, particularly businesses operating in regulated or compliant environments that need payment acceptance, mass payout and alternative…
Financial Health
StrongStrong
Location
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- Paytriot10893845
- Paytriot15130819
Financial sub-scores
Computed from 5 filingsProvides online payment processing and merchant services, including a payment gateway, multi‑currency transaction processing, e‑money wallet accounts, APIs, and transaction dashboards. Integrates…
Serves B2B online merchants and ecommerce businesses, including Shopify, BigCommerce and WordPress sellers, that need merchant services, multi-currency payments, POS options and transaction…
Financial Health
StableStable · Hiring · 9% CAGR over 4y
Location
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Financial sub-scores
Computed from 3 filingsProvides payment processing technology including a PCI‑compliant payment gateway, EFTPOS terminals and omni‑channel systems for accepting credit and debit card payments online, in‑store and at…
Serves B2B merchants and brands worldwide across online, retail, call centre and unattended environments, including retail, finance, hospitality, government, entertainment, vending, tourism and…
Financial Health
StableStable · Hiring · 17% CAGR over 2y
Location
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Financial sub-scores
Computed from 5 filingsProvides merchant payment processing services enabling businesses to accept card payments in store, online and on mobile devices. Supplies payment terminals, e‑commerce integrations, transaction…
Serves UK businesses of all sizes, including high-street retailers, hospitality operators, online merchants and mobile sellers, as well as partners working with business customers.
Financial Health
StrongStrong · Hiring · 6% CAGR over 4y
Location
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Financial sub-scores
Computed from 5 filingsProvides merchant payment services and technology for businesses, including POS and SoftPOS payment systems, EPOS software, e‑commerce payments and pay‑by‑link solutions. Also offers e‑money…
Serves B2B merchants, including retailers, service providers, mobile traders and e-commerce businesses that need to take customer payments and manage sales, stock and transaction data.
Financial Health
WeakWeak · -12% CAGR over 4y
Location
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Financial sub-scores
Computed from 5 filingsProvides online payment processing services including a payment gateway, merchant accounts, payment links, and checkout integrations. Offers fraud management, chargeback management, PCI and ASV…
Sells to businesses that need to accept online payments, from start-ups and mobile app operators to global enterprises. Targets merchants seeking multi-currency checkout, international payment…
Financial Health
WeakWeak · -11% CAGR over 4y
Location
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Financial sub-scores
Computed from 5 filingsProvides card payment processing solutions for businesses, including countertop, portable and mobile card machines, e‑commerce and telephone payment services, payment buttons and invoice links, and…
Serves UK small and medium-sized businesses, plus larger established merchants with higher card-payment volumes, across retail, e-commerce, telephone sales and unattended sectors such as vending, EV…
Financial Health
HealthyHealthy · -81% CAGR over 4y
Location
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Financial sub-scores
Computed from 5 filingsDevelops and operates a mobile payment application that enables businesses to accept credit and debit card payments via smartphones using Tap to Pay or card readers, send payment links, access…
Serves UK small businesses, sole traders and mobile merchants, including clinics and service providers, that take in-person or remote customer payments without monthly contracts.
Financial Health
DistressedDistressed · -57% CAGR over 4y
Location
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Financial sub-scores
Computed from 5 filingsProvides merchant payment processing services, including card terminals for in‑person transactions, virtual terminals for telephone payments, and online payment integration. Also offers payment…
Serves UK SMEs and small business owners in retail, hospitality and service sectors, including merchants taking payments face to face, online or by phone.
Financial Health
StrongStrong · Growing, Hiring · 17% CAGR over 4y
Location
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- Card Saver UK09188754
Financial sub-scores
Computed from 4 filingsSupplies card payment processing solutions for businesses, including portable and countertop card terminals, online payment gateways and payment links. Also provides merchant account services,…
Serves UK small businesses and merchants taking payments face to face, online or by phone, including retailers, mobile traders and in-store operators.
Financial Health
WeakWeak · 0% CAGR over 3y
Location
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Financial sub-scores
Computed from 5 filingsProvides online payment processing and billing services for internet businesses, including credit card processing, subscription and recurring billing management, checkout tools, and consumer account…
Targets online merchants and internet businesses, especially ecommerce stores, subscription services, dating platforms, adult content and live cam operators
Financial Health
StrongStrong · 0% CAGR over 3y
Location
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- Paymentsave09872986
Financial sub-scores
Computed from 5 filingsProvides card payment processing solutions for businesses, including countertop, portable and mobile card machines, online payment gateways and EPOS systems. Also offers merchant cash advances,…
Serves UK businesses that need card and online payment acceptance, including retail stores, restaurants and hospitality operators, mobile service providers and e-commerce merchants.
Financial Health
StrongStrong · Hiring · 22% CAGR over 4y
Location
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- Financial House06984394
Financial sub-scores
Computed from 2 filingsProvides payment processing and financial technology services for businesses, including merchant acquiring for card payments, card issuing for prepaid, gift and debit cards, virtual GBP and EUR IBAN…
Targets B2B merchants, fintech platforms and companies that need to accept global payments, issue branded cards or provide client virtual accounts, with emphasis on UK regulatory compliance.
Financial Health
HealthyHealthy · Hiring · 28% CAGR over 1y
Location
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Financial sub-scores
Computed from 3 filingsProvides merchant payment services including card terminals, online payment gateways, phone payments and payment links. Supports card and digital wallet transactions, including cryptocurrency, and…
Serves UK businesses and merchants that take card payments in-store, online, by phone or invoice, including e-commerce sellers, retail and service businesses, and higher-risk or crypto-related…
Financial Health
StrongStrong · Growing, Hiring · 205% CAGR over 2y
Location
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Financial sub-scores
Computed from 5 filingsProvides merchant payment services including card payment terminals, EPOS systems, and online payment processing. Supplies e‑commerce gateways, virtual terminals and pay‑by‑link tools enabling…
Serves SMEs and larger businesses across Yorkshire and beyond, including small independents, e-commerce merchants and multi-site organisations.
Financial Health
WeakWeak · -16% CAGR over 4y
Location
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Financial sub-scores
Computed from 2 filingsProvides payment processing and commerce technology, offering integrated payment platforms, APIs, and cross-border payment capabilities that enable businesses to accept, process and manage electronic…
Sells to businesses needing cross-border payment capabilities, particularly merchants and commerce organisations operating in the UK and internationally. Targets B2B buyers seeking payment…
Financial Health
StrongStrong · Hiring · 324% CAGR over 1y
Location
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Financial sub-scores
Computed from 5 filingsProvides payment processing and acquiring services, e‑wallet accounts for businesses, merchants and institutions, and card issuing programmes including virtual and physical payment cards. Supports…
Serves B2B customers including financial institutions, payment facilitators, online merchants, and low- to medium-risk businesses seeking merchant accounts, acquiring relationships, or branded…
Financial Health
StrongStrong · Growing, Hiring · 63% CAGR over 4y
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Financial sub-scores
Computed from 5 filingsProvides payment processing services and payment technology for businesses, including card terminals, tap‑to‑pay and SMS payments, online checkout, and digital wallets. Offers fraud protection,…
Sells to UK businesses of varying sizes, including new and established stores, food and drink outlets, bars and venues, retailers, barbers, and mobile merchants needing in-store or on-the-go payments.
Financial Health
StrongStrong · Hiring · 24% CAGR over 4y
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Financial sub-scores
Computed from 5 filingsProvides payment processing services for merchants through an online platform and API. Supports multiple payment methods, integrations, transaction reporting, data analytics, and fraud detection…
Serves B2B merchants and digital businesses that need payment infrastructure, including payment, product and finance teams seeking global acquiring, multiple payment methods, reporting and fraud…
Financial Health
HealthyHealthy · -10% CAGR over 4y
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Financial sub-scores
Computed from 3 filingsProvides merchant payment processing services, supplying card machines that accept card transactions and deposit funds to businesses quickly. Offers transaction processing and real-time reporting…
Serves UK businesses and merchants that take card payments, including existing and pre-approved customers using card machines and payment processing accounts.
Financial Health
WeakWeak · -25% CAGR over 1y
Location
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Computed from 3 filingsProvides payment processing software and services for businesses, including online payment acceptance, global acquiring, mass payouts, card reader solutions, and a unified platform for transaction…
Serves B2B merchants and partners needing payment acceptance, payouts and checkout capabilities, including e-commerce, subscription and multi-location businesses expanding across Southeast Asia,…
Financial Health
DistressedDistressed · -88% CAGR over 2y
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Provides payment processing and commerce technology for enterprises, including online and in‑store payment acceptance, card acquiring, cross‑border payments, payment orchestration, fraud and risk…
Serves enterprise businesses and global brands, particularly retailers, hospitality groups, cruise and ferry operators, travel companies, and gaming operators needing payment infrastructure across…
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Financial sub-scores
Computed from 5 filingsProvides a fintech platform for businesses to accept and process payments across online, mobile, and in‑store channels. Offers payment processing, fraud risk management, data insights, payouts, and…
Serves large and scaling businesses, including global enterprises in retail, travel and hospitality, digital media, SaaS, marketplaces, food and beverage, and financial services that need payment and…
Financial Health
StableStable · -10% CAGR over 4y
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Provides fintech and payment services including corporate multi‑currency eMoney accounts, online payment processing, open banking payments, direct debit and card acquiring. Offers global transfers,…
Serves B2B customers, especially merchants and businesses of all sizes in the UK and EU needing multi-currency accounts, online payment acceptance, open banking access and international transfers.
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Computed from 3 filingsProvides an online payment and banking platform for businesses and fintechs, offering multi‑currency accounts with individual IBANs, card acquiring, payment links, API integrations, currency…
Serves online businesses, fintech companies, and regulated-industry firms, particularly those handling international transactions, multi-currency operations, subscriptions, and API-based payment…
Financial Health
DistressedDistressed · -42% CAGR over 2y
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Computed from 4 filingsProvides payment processing services including online payment gateways, in‑store and EPOS transaction systems, and API integrations. Supports merchants, software vendors and enterprises with…
Sells to businesses and public sector bodies needing payment processing, including startups, SMEs, multinational enterprises, government agencies, resellers/ISOs and software vendors integrating…
Financial Health
HealthyHealthy · Hiring · 4% CAGR over 3y
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- Pomelo13308219
Financial sub-scores
Computed from 4 filingsProvides a platform‑as‑a‑service payments infrastructure for financial institutions and enterprises. Offers payment processing, card issuing, merchant onboarding and management tools, and APIs…
Serves B2B buyers including financial institutions, banks, fintechs, corporations, public-sector bodies and small businesses with merchant, supplier and end-customer payment needs.
Financial Health
HealthyHealthy · Hiring · 9% CAGR over 3y
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Computed from 3 filingsProvides payment processing technology and integrated point‑of‑sale solutions, including payment terminals, mobile and unattended devices, e‑commerce payment systems, and POS software for hospitality…
Serves B2B merchants, hospitality and restaurant operators, ISOs, ISVs, agents and payment facilitators seeking payment and POS solutions across Canada, the US and the UK.
Financial Health
StrongStrong · Growing · 4% CAGR over 2y
Location
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Provides payment processing and commerce software for retailers, hospitality and travel businesses, including online and in‑person payment acceptance, dynamic currency conversion, tax‑free…
Sells to businesses in retail, hospitality and travel, including hotels, bars, restaurants, quick-service outlets and merchants selling online or in person. Also serves retailers handling…
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How UK Merchant Acquiring companies work and how to sell to them
What they do
Revenue is usually earned from transaction-linked merchant service charges, supplemented by account fees, gateway charges, hardware or integration services and dispute-related fees. The commercial unit is less a licence seat than a merchant relationship: pricing reflects card turnover, channel mix, refund rates, chargeback exposure and settlement terms. Smaller merchants may be priced through published tariffs and referral arrangements, while larger merchants expect negotiated rates, service commitments and integration support. The product shape combines regulated financial operations with software workflow: onboarding, underwriting, authorisation routing, settlement reporting and exception handling all have to work together.
Who they sell to
Buyers are normally merchants with regular card volume: independent retailers, hospitality operators, ecommerce sellers, marketplaces and service businesses. The first conversation often sits with a finance director, head of operations, ecommerce lead or commercial owner, with CTO and engineering teams involved when payment acceptance touches checkout, point-of-sale or accounting integrations. Contract size follows card turnover rather than employee count, so a lean online merchant can matter more than a larger low-volume business. Smaller accounts may arrive through self-serve, referrals or partner channels; larger retailers and marketplaces tend to use direct sales, procurement review and occasional RFP processes.
What they buy
Most acquirers tend to spend where risk, uptime and reconciliation meet. Likely categories include merchant onboarding tools, identity and business verification, fraud screening, transaction monitoring, chargeback case management, settlement reconciliation, billing and pricing engines, CRM, customer support software, data warehousing and analytics. Engineering teams may buy cloud infrastructure, observability, API management, testing, security tooling and integration support for ecommerce, point-of-sale and accounting connections. Operational teams also use legal, payments compliance, audit, accounting, recruitment and training services, especially when underwriting policy, merchant support or dispute handling starts to outgrow informal processes.
Why and how to sell to them
Commercial pain is often operational before it is strategic: delayed onboarding, rising chargebacks, reconciliation breaks, support backlogs or margin leakage from poorly controlled pricing. The 21 firms above £5M revenue are more plausible buyers for governance, reporting, security and procurement-led services than very small operators, while younger acquirers may prioritise speed of setup and merchant acquisition. Good outbound angles tend to attach to observable triggers: hiring in risk or operations, expansion into a new merchant vertical, new checkout integrations, funding, leadership change, or public complaints about settlement and disputes. Claims should be framed around loss reduction, auditability and fewer manual exceptions.
How this list is built
Data sources
This list is built from UK Companies House filings, XBRL accounts data, and semantic analysis of each company's public website. 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.
Classification
Rather than relying solely on SIC codes, Firmbase classifies each company semantically: the company's website is crawled, an AI model reads what the company actually sells, and the company is placed into the relevant industry and subsectors. SIC codes are used as one signal but not the only one. This means a company that registered under a generic SIC code but pivoted into (for example) fintech is correctly identified as fintech, not as its original SIC category.
Freshness
The underlying company data is refreshed from Companies House continuously; filings appear in the list within days of submission. The curated list ordering is regenerated when the underlying data moves meaningfully (company count changes by more than 5%, a new company enters the top-ranked segment, or the filed-revenue numbers for the top firms change). You can see the last-updated timestamp near the top of the page.
Sources
- Roles and responsibilities in payments regulation
- The Bank of England, FCA, PSR and PRA each have a role in the regulation of payments in the UK.
- The Memorandum of Understanding covers relevant functions as defined in section 98(5) of the Financial Services (Banking Reform) Act 2013.
- The page focuses on the Bank of England as a supervisor of payment systems, not as a payment system operator.
- In March 2025, the Government announced plans to consolidate PSR functions primarily into the FCA.
- The Government stated there will be no immediate changes to the PSR's remit or ongoing work programme.
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Frequently asked questions
How many merchant acquiring companies are there in the UK?
What counts as a merchant acquiring company in this list?
Which are the largest merchant acquiring companies in the UK?
What do merchant acquiring companies in the UK actually do?
How does UK merchant acquiring compare internationally?
How is this list built and how fresh is the data?
How big are the typical merchant acquiring companies in the UK?
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What SIC codes does this use?
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