Payments Companies in the UK: 547 Active Firms (2026)
Payments companies in the UK provide transaction processing, money movement, and merchant acceptance services for businesses and consumers.
Buying centres tend to sit with finance, revenue operations, product, risk, and platform teams rather than a single procurement owner. Merchant acquirers and service providers sell into retailers, hospitality groups, online merchants, and subscription businesses; platform-oriented firms serve marketplaces, fintech providers, and software vendors that want embedded payment flows. Engagements are usually integration-led: API work, reconciliation, fraud controls, settlement reporting, and customer support matter as much as price. The closest-fit operators are revenue-generating scale-ups and mid-market firms, not pure consumer wallets or advisory businesses around payments.
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The UK cohort contains 547 actively trading payments companies, a relatively small specialist group within financial infrastructure and business software. Reported employment totals 1,493 people, which points to a market with many small operators and a thinner layer of scaled employers. The revenue threshold is selective, with 75 reporting more than £5M turnover, and recent incorporation remains visible, with 71 incorporated since 2022. That mix suggests an established merchant-services base alongside newer embedded-payment and payout infrastructure businesses still moving from product build into repeatable distribution.
Regulatory exposure tends to turn on where the operator sits in the flow of funds. Firms that control settlement, initiate transfers, onboard merchants, or manage acquiring relationships face more scrutiny around safeguarding, customer due diligence, fraud monitoring, complaints handling, and audit trails. Software-led facilitators that connect merchants to partner rails may carry less direct authorisation burden, but buyers still examine information security, uptime, reconciliation quality, and liability allocation. Market structure is therefore split between regulated infrastructure operators, merchant-service distributors, and embedded-payment specialists selling through platforms.
Further maturity appears likely to favour operators with clearer control of risk, settlement, and reconciliation rather than those relying mainly on merchant sign-up volume. Buyers tend to rationalise integration partners once payment flows become embedded in core revenue operations, so consolidation pressure may build around platforms, marketplaces, and sector-specific commerce software. New entrants can still find room where payouts, account-to-account flows, and cross-border use cases are awkward for incumbents, but scale-up scarcity suggests the path from product traction to durable revenue remains demanding.
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.
547
Active firms
2026
75
Above £5M
Companies with reported revenue over £5M
71
Newer incorporations
Incorporated since 2022
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Key facts
About 13% of the trading cohort reports turnover above £5M (75 of 547 firms) — the rest sits below that revenue band.
12% of the cohort was incorporated since 2022 (71 firms), so a sizeable share is in its first few filing cycles.
Payments operators sit close to revenue collection, so authorisation rates, settlement timing and reconciliation quality affect cash flow and customer experience.
The segment covers transaction processing, money movement and merchant acceptance across both business and consumer payment flows.
Commercial models vary across the sector, with processing economics and operating model often mattering as much as visible scale.
Top UK Payments companies
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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Financial sub-scores
Computed from 5 filingsProvides an embedded payments API enabling software platforms to integrate payables such as supplier bill payments, payroll and expenses. Supports bank transfers and card payments, real-time or…
Sells to B2B software platforms, especially accounting, payroll, expense and finance products, whose users need to make supplier, payroll or business payments within the platform.
Financial Health
StrongStrong · Growing, Hiring · 94% 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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- 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 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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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 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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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
Location
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- Modulr09895588
Provides an embedded payments platform and APIs that enable businesses to automate financial operations. Services include multi‑currency accounts, pay‑ins and collections, instant and scheduled…
Serves B2B finance teams, accountants, corporates and enterprises, including firms in travel, lending and wage advance, merchant services, and investment and wealth sectors needing payment…
Location
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Develops and operates a cloud-based payments technology platform for financial institutions, enabling integration with payment schemes via APIs. Supports real-time and batch account-to-account…
Serves banks, payment service providers and fintech companies that need connectivity to UK, EU and US payment schemes, including firms handling high-volume account-to-account payments.
Location
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Financial sub-scores
Computed from 2 filingsProvides a payments platform that enables businesses to send cross-border payouts, collect funds, and manage local currency accounts. Offers API access to global payment rails supporting…
Serves large global businesses, including marketplaces, on-demand platforms, payroll and EOR providers, pension operators, and e-commerce companies expanding into international markets.
Financial Health
WeakWeak · Hiring · 12% CAGR over 1y
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…
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Develops and operates a unified payment platform for financial institutions and enterprises. Provides payment rails, merchant onboarding and management tools, card issuing, QR and tap‑to‑pay…
Serves B2B customers including banks, fintechs, established enterprises, corporations and public-sector organisations that manage merchant, supplier or end-customer payment ecosystems.
Location
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Financial sub-scores
Computed from 3 filingsProvides an embedded payments platform and payment gateway for businesses and online platforms. Enables acceptance of online and international payments, multicurrency accounts, invoicing, payment…
Serves B2B marketplaces, eCommerce businesses, platforms and app operators with cross-border, multicurrency payment needs, including firms paying suppliers, partners, employees or platform users.
Financial Health
StableStable · -21% CAGR over 2y
Location
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Financial sub-scores
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
Location
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Financial sub-scores
Computed from 5 filingsProvides open banking infrastructure and APIs that enable businesses to connect to bank accounts, onboard users, initiate account‑to‑account payments, and manage payouts. Operates a Pay by Bank…
Sells to enterprise and growth-stage online merchants across Europe, including ecommerce, travel, food delivery and financial services brands handling high-volume consumer checkout and payouts.
Financial Health
WeakWeak · -73% CAGR over 4y
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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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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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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Financial sub-scores
Computed from 3 filingsProvides account‑to‑account payment infrastructure for banks, fintechs and payment platforms. Offers APIs enabling pay‑by‑bank transactions, variable recurring payments, real‑time payouts, and bank…
Serves banks, payment service providers, fintechs, ecommerce platforms and merchants, plus crypto and iGaming operators, primarily across European markets.
Financial Health
HealthyHealthy · -87% CAGR over 2y
Location
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Financial sub-scores
Computed from 4 filingsProvides a payment platform for businesses to accept and send payments. Offers card and alternative payment processing, pay‑by‑link, subscriptions, phone and in‑person payments, international…
Serves growing businesses and finance teams, including merchants with recurring subscriptions, international payout needs, shopper-facing payment flows, and compliance-heavy customer onboarding…
Financial Health
HealthyHealthy · Hiring · 5% CAGR over 3y
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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Financial sub-scores
Computed from 3 filingsProvides business-to-business payment services including electronic money accounts, payment processing and card issuing programmes. Operates as an authorised electronic money institution and…
Sells to businesses needing payment, card issuing and electronic money solutions, including firms serving their own end customers. Targets B2B clients seeking an FCA-regulated financial institution…
Financial Health
StrongStrong · 0% CAGR over 1y
Location
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Financial sub-scores
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
Location
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Financial sub-scores
Computed from 2 filingsProvides digital payment and financial management services for businesses, including multi‑currency business accounts, online payment processing, mobile point‑of‑sale systems, company cards,…
Serves B2B customers, particularly businesses trading internationally, online merchants, and companies with teams needing multi-currency accounts, payment acceptance, company cards, and expense…
Financial Health
StrongStrong · Hiring · 22% CAGR over 1y
Location
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Financial sub-scores
Computed from 5 filingsProvides international payment and foreign exchange services for businesses through an online platform. Offers multi‑currency business accounts, cross‑border payments and collections, FX hedging…
Serves growing businesses, enterprises and financial institutions with international operations, including charities and NGOs, sports organisations, e-commerce, maritime, travel and funds sectors,…
Financial Health
WeakWeak
Location
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Financial sub-scores
Computed from 5 filingsProvides payment orchestration and digital commerce platforms that connect payment service providers, acquirers and alternative payment methods. Enables airlines, travel companies and other merchants…
Sells primarily to enterprise travel businesses, especially airlines, hotels and other travel providers. Also serves retailers, e-commerce merchants and hospitality companies seeking payment…
Financial Health
DistressedDistressed · -68% CAGR over 4y
Location
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Financial sub-scores
Computed from 5 filingsProvides a fintech platform for businesses and financial institutions to make cross-border payments. Offers multi-currency accounts, global payouts, foreign exchange services, and physical and…
Serves B2B customers including banks, money transfer operators, global enterprises, payroll providers, marketplaces, spend management platforms, creator platforms, online travel agencies, airlines…
Financial Health
StrongStrong · Growing, Hiring · 64% 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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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 an open banking payments platform that enables businesses to accept bank-to-bank payments and send payouts directly to customer accounts. Offers APIs, hosted payment flows and a dashboard…
Serves B2B merchants of all sizes, especially high-volume online and mobile businesses that need Pay-In, Pay-Out, refunds, recurring payments, payment links, QR journeys and reconciliation across UK…
Financial Health
StableStable · 0% CAGR over 4y
Location
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Financial sub-scores
Computed from 4 filingsDevelops payment processing software and platforms for financial institutions, including card issuing and acquiring systems, digital payment services, fraud management, ATM management, and…
Serves B2B financial institutions and payments-sector organisations, including banks, fintech start-ups, payment processors, issuers, acquirers and market leaders managing card, digital, ATM and…
Financial Health
StrongStrong · Growing · 0% CAGR over 3y
Location
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Financial sub-scores
Computed from 2 filingsProvides payment infrastructure and e‑money services for financial institutions, payment service providers and digital asset businesses, including correspondent accounts, virtual IBANs,…
Serves regulated financial institutions and fintech businesses, including banks, EMIs, payment service providers, remittance firms, marketplaces and digital asset providers needing access to GBP/EUR…
Financial Health
StrongStrong · Hiring · 299% 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 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 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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Financial sub-scores
Computed from 3 filingsProvides digital financial services for businesses, including multi‑currency accounts with UK sort codes and IBANs, domestic and international payments, foreign exchange, corporate Mastercard cards,…
Sells to businesses needing business accounts, payments, FX, cards and acquiring, especially firms with cross-border or multi-currency needs, including e-commerce merchants and companies operating in…
Financial Health
HealthyHealthy · Profitable, Hiring · 22% CAGR over 2y
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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 3 filingsProvides a payment orchestration platform that integrates multiple global payment service providers and methods through a single API. Offers card and alternative payment processing, dynamic…
Sells to enterprise merchants and large consumer-facing businesses with complex global payment needs, particularly in travel, airlines, ecommerce and online marketplaces. Targets payments, treasury…
Financial Health
StrongStrong · Hiring · 69% CAGR over 2y
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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
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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
Location
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Financial sub-scores
Computed from 3 filingsProvides B2B payment processing services focused on corporate purchasing and procurement cards. Operates a payment gateway and tools including virtual terminals, online payment pages, PayByLink,…
Sells to businesses using or accepting corporate purchasing and procurement cards, including buyers, suppliers and merchants. Serves B2B organisations needing payment processing, merchant acquiring…
Financial Health
StableStable · -92% CAGR over 2y
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Computed from 5 filingsProvides payment processing and payment gateway services for online and in‑store transactions. Offers mobile payment solutions, virtual terminals, recurring billing, fraud management, and…
Serves B2B merchants needing payment acceptance, including ecommerce and retail businesses, gaming companies, clubs and associations, and organisations using shopping cart integrations or…
Financial Health
StrongStrong · Growing, Hiring · 15% CAGR over 4y
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Operates a global payments network that enables businesses, banks and money transfer operators to send and receive cross-border payments to bank accounts, cards and digital wallets, supporting…
Serves banks, digital wallet providers, money transfer operators, travel and media companies, and businesses with global workforce or supplier payout needs across multiple markets.
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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
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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
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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 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
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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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How UK Payments companies work and how to sell to them
What they do
Payments firms earn revenue from the movement, acceptance, routing, and reporting of money for businesses. Pricing commonly blends per-transaction fees, basis-point margins, monthly gateway or account charges, settlement fees, foreign exchange spread, and paid implementation work. Software-led operators may charge for access to payment orchestration, reconciliation, fraud screening, or embedded checkout infrastructure, while merchant-service businesses often combine acquiring, support, and hardware rental. Margins depend heavily on volume, risk profile, payment method, refund rates, chargebacks, and the amount of operational support needed after go-live.
Who they sell to
Most sell to finance, product, technology, risk, and commercial teams inside merchants, platforms, marketplaces, and financial services providers. Smaller merchants may buy through self-serve onboarding or reseller channels, but mid-market and enterprise buyers usually want direct sales, integration support, security review, and commercial negotiation. CFOs and finance directors care about settlement, fees, reconciliation, and cash flow; CTOs and platform teams test API quality, uptime, and implementation burden; risk and compliance teams examine onboarding controls and liability. Contract value is usually tied to processed volume rather than seat count, so procurement tends to focus on pricing bands, service levels, and failure handling.
What they buy
Payments operators tend to spend on systems that reduce operational drag around transaction flows. Common categories include cloud infrastructure, API monitoring, observability, incident management, security testing, fraud analytics, customer due diligence, merchant onboarding, reconciliation, ledgering, billing, CRM, customer support, contract management, and finance operations software. Regulated or quasi-regulated firms also buy legal advice, compliance support, audit preparation, data protection work, and specialist recruitment across engineering, risk, finance, and commercial roles. Infrastructure spend is often justified through fewer manual reviews, faster settlement investigation, lower support volumes, and cleaner reporting for merchants and partners.
Why and how to sell to them
Commercial intent often appears when a payments firm enters a new merchant vertical, adds a payment method, changes an acquiring relationship, launches embedded flows for platforms, or moves from manual operational processes to repeatable onboarding. Hiring in risk, finance, platform engineering, or revenue leadership can also point to a fresh buying window. Sellers usually get further by anchoring outreach in cost per transaction, settlement accuracy, chargeback handling, compliance workload, uptime, or speed of merchant activation. Generic growth messaging tends to land poorly; these buyers are more likely to engage when the pitch maps to a specific bottleneck in money movement or merchant operations.
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.
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Frequently asked questions
How many payments companies are there in the UK?
What counts as a payments company in this list?
Which are the largest payments companies in the UK?
What do payments companies in the UK actually do?
How does UK payments compare internationally?
How is this list built and how fresh is the data?
How big are the typical payments companies in the UK?
Are these mostly new or established payments companies?
What SIC codes does this use?
What buying signals should I look for?
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