Mobile payments aren’t a “nice to have” anymore – they’re expected. Whether you’re grabbing coffee at a corner café or checking out from a big online shop, people want to pay quickly and securely with just a tap. That’s where payment integration companies come in. They’re the behind-the-scenes pros who make the whole process work smoothly. In the UK, a handful of companies have built strong reputations in this space. Let’s walk through some of the big names worth knowing.
1. A-Listware
We are a software development and consulting company with long-standing experience working with businesses in the UK and internationally. Our approach is practical: we focus on building reliable development teams that can handle tasks like payment integration, mobile applications, and broader digital projects. By combining technical knowledge with an understanding of how companies actually operate, we help clients adopt solutions that fit into their existing processes without unnecessary complexity.
Our presence in the UK allows us to work closely with enterprises, startups, and mid-sized firms that need dependable engineering support. We put attention on both the technical and organisational side of projects, ensuring that teams are not only skilled but also able to communicate and adapt effectively. With access to a large pool of developers and specialists, we can shape teams around different requirements, whether that involves financial systems, e-commerce, or industry-specific applications.
Key Highlights:
- Over two decades of experience supporting software development projects
- Presence in the UK with collaboration across industries including finance, retail, and telecoms
- Flexible team structures tailored to client requirements
- Strong focus on security and quality standards
- Ability to integrate with both cloud and on-premises systems
Services:
- Mobile app development and integration
- Custom software development
- Application services and legacy software modernisation
- Dedicated development teams and team augmentation
- Data analytics and machine learning solutions
- Infrastructure and managed IT services
- Cybersecurity and secure coding practices
- Testing and quality assurance
Contact Information:
- Website: a-listware.com
- Email: info@a-listware.com
- Facebook: www.facebook.com/alistware
- LinkedIn: www.linkedin.com/company/a-listware
- Address: St. Leonards-On-Sea, TN37 7TA, UK
- Phone Number: +44 (0)142 439 01 40
2. Stripe
Stripe is probably the first name that comes to mind when you think about modern payments. They’ve built a reputation as a go-to platform for businesses of all sizes, from tiny startups to huge marketplaces. Their strength is flexibility: you can accept payments online or in person, set up subscription billing, or even issue your own cards. Developers especially love Stripe because of its clean APIs and ready-made components.
But Stripe isn’t just about moving money around. They’ve expanded into areas like fraud detection, revenue reporting, and tax automation, so companies can manage more of their financial workflows in one place. Plus, with support for 100+ currencies and payment methods, it’s an easy choice for businesses with global ambitions.
Key Highlights:
- Supports over 100 global payment methods and currencies
- API-first approach with developer-friendly tools
- Options for both no-code and custom integrations
- Services tailored to different business models, from startups to enterprises
- Infrastructure designed for scalability and global operations
Services:
- Online and in-person payment processing
- Subscription billing and invoicing
- Fraud prevention and risk management
- Financial account and card issuing solutions
- Tax automation and revenue reporting
- Multiparty payments and payouts for platforms and marketplaces
Contacts:
- Website: stripe.com
- Phone: +1 888 926 2289
3. Adyen
Adyen has made a name for itself by offering an “all-in-one” payments setup. Instead of juggling different providers for online, in-store, and cross-channel sales, businesses can run everything through Adyen. That means payments, reporting, and fraud prevention are all in one place, which makes life a lot simpler.
Another big plus is how they use data. Adyen applies machine learning to improve things like fraud checks and transaction approval rates. They also let businesses issue their own cards and manage payouts, which is especially handy for marketplaces. For companies that want both global reach and control over their financial operations, Adyen is hard to beat.
Key Highlights:
- Single platform for payments, data, and financial management
- Combines online, in-person, and unified commerce solutions
- Built-in fraud detection and risk management tools
- Machine learning used for authentication and performance optimization
- Supports issuing cards and faster payouts for platforms
Services:
- Online and in-person payment processing
- Unified commerce solutions across sales channels
- Fraud detection and risk management
- Payment authentication services
- Issuing of physical and virtual cards
- Payouts and financial infrastructure for platforms and marketplaces
Contacts:
- Website: www.adyen.com
- Facebook: www.facebook.com/AdyenPayments
- Twitter: x.com/Adyen
- LinkedIn: www.linkedin.com/company/adyen
4. Worldpay
Worldpay has been around the block. They’re one of the bigger players in payment tech, serving everyone from small shops to global enterprises. Their setup covers online transactions, in-store payments, and omnichannel solutions that tie it all together. If you’ve ever tapped your card at a shop in the UK, chances are Worldpay was part of the process.
Beyond handling payments, they offer services for fraud prevention, dispute management, and reporting. They’ve also been pushing into loyalty and embedded finance. Because they work across so many industries, their systems are built to handle a huge volume of transactions while keeping everything secure and reliable.
Key Highlights:
- Works with merchants of all sizes across various industries
- Presence in multiple countries with broad payment coverage
- Supports both online and in-person payment methods
- Tools for payment optimization using AI and smart routing
- Focus on fraud prevention, authentication, and dispute management
Services:
- Online and in-person payment processing
- Omnichannel and embedded payment solutions
- Fraud prevention and dispute management
- Revenue optimization and dynamic routing
- Payouts and financial management tools
- Loyalty, gift, and embedded finance programs
Contacts:
- Website: www.worldpay.com
- Facebook: www.facebook.com/worldpay
- Twitter: x.com/Worldpay_Global
- LinkedIn: www.linkedin.com/company/worldpay
- Instagram: www.instagram.com/worldpay
5. Revolut
Revolut started as a UK-based fintech app, but it’s grown into a global financial platform. For individuals, it’s an easy way to move money, manage multiple currencies, and shop online with virtual or physical cards. For businesses, Revolut offers tools for payroll, international transfers, and expense management – all inside the same app.
They’ve also expanded beyond payments into savings, trading, and investing. You can buy stocks, set up savings vaults, and even dabble in commodities. Security is built in too, with strong fraud monitoring. Revolut’s whole appeal is that you don’t need to deal with traditional banking channels – it’s digital-first and streamlined.
Key Highlights:
- UK-based fintech with global user base
- Personal and business accounts with multi-currency support
- Digital and physical debit cards available
- Security measures including fraud monitoring
- Investment options such as stocks and commodities
Services:
- Money transfers and international payments
- Debit and virtual card issuance
- Savings and budgeting features
- Investment services in stocks and commodities
- Business payment and payroll solutions
- Fraud prevention and account security tools
Contacts:
- Website: www.revolut.com
- Facebook: www.facebook.com/revolutapp
- Twitter: x.com/RevolutApp
- LinkedIn: www.linkedin.com/company/revolut
- Instagram: www.instagram.com/revolutapp
6. Shopify
Shopify is best known as an e-commerce platform, but payments are a big part of what they do. Their system lets merchants sell online, through social channels, or in person using their POS tools – all connected to a single checkout system. For global sellers, they also support localized payments and multiple currencies.
What sets Shopify apart is how much else comes with the package. Beyond payments, you get marketing tools, analytics, and integrations through the Shopify App Store. Bigger businesses can dig deeper with APIs and custom checkout options. In short, Shopify isn’t just about selling – it’s about managing your whole commerce ecosystem in one place.
Key Highlights:
- Commerce platform supporting online and in-person sales
- Unified checkout system across multiple channels
- Tools for inventory, order management, and analytics
- Options for localized payments and international sales
- Integrations available through the Shopify App Store
Services:
- Online store creation and hosting
- Payment processing and checkout customization
- Point of Sale (POS) for in-person transactions
- Marketing and customer engagement tools
- Inventory and order management solutions
- APIs and developer tools for custom features
Contacts:
- Website: www.shopify.com
- Facebook: www.facebook.com/shopify
- Twitter: x.com/shopify
- LinkedIn: www.linkedin.com/company/shopify
- Instagram: www.instagram.com/shopify
7. Checkout.com
Checkout.com has built its reputation on being flexible. Instead of making businesses juggle different systems, they offer one API that opens the door to a wide range of payment tools. Whether you’re running online payments, mobile checkouts, or just need to send money to a bank account, their setup is designed to keep things smooth and reliable.
On top of payment processing, they’ve layered in fraud prevention, compliance checks, and even card issuing – both physical and virtual. They’re also strong on global reach, with currency management and payout features that make cross-border transactions less of a headache. Big brands already rely on them, which says a lot about their ability to handle complex payment flows.
Key Highlights:
- Single API for multiple payment services
- Options for online, mobile, and hosted integrations
- Global acquiring and payout network
- Fraud detection and compliance tools
- Partnerships with international brands
Services:
- Online and mobile payment acceptance
- Payment links and plugins for platforms
- Card issuing (physical and virtual)
- Fraud detection and risk management
- Identity verification and authentication
- Payouts to bank accounts and cards
- Treasury and FX management
Contacts:
- Website: www.checkout.com
- Facebook: www.facebook.com/checkout
- Twitter: x.com/checkout
- LinkedIn: www.linkedin.com/company/checkout
- Instagram: www.instagram.com/checkout_com
- Phone: +44 207 323 3888
8. PayPal
PayPal hardly needs an introduction – it’s one of the most recognizable names in payments worldwide. In the UK, it gives both individuals and businesses an easy way to send, receive, and manage money from just about any device. Security has always been a core focus, with encryption and 24/7 monitoring keeping things safe behind the scenes.
What makes PayPal handy is its versatility. You can split a dinner bill with a friend, get paid instantly through an online shop, or move money into your bank account within minutes. It works across borders, too, which makes it a go-to for anyone dealing with international transactions.
Key Highlights:
- Widely adopted digital wallet and payment platform
- Strong security measures including encryption and monitoring
- Supports international transactions and transfers
- Instant transfer feature for quicker fund access
- Options for both personal and business accounts
Services:
- Peer-to-peer money transfers
- Online and mobile payment acceptance
- Instant withdrawals to bank accounts or cards
- Business payment solutions for e-commerce
- Account and transaction security monitoring
- Cross-border payments and multi-currency support
Contacts:
- Website: www.paypal.com
- Address: 5 Fleet Place, London, United Kingdom, EC4M 7RD
9. Tranzzo
Tranzzo takes a very merchant-focused approach, offering tools that let businesses tap into global payment systems with ease. Their platform supports a wide mix of payment methods and currencies, which makes it appealing for online stores, marketplaces, and even iGaming platforms. They’ve put thought into flexibility, giving clients options like white-label setups and orchestration features that connect different providers.
Getting started is fast – sometimes within a day – so businesses don’t get stuck in long onboarding processes. Tranzzo also includes analytics, reporting, and 24/7 support, all aimed at making payments easier to manage. With features like QR code payments, fraud prevention, and one-click checkouts, they try to cover both the basics and the extras.
Key Highlights:
- One-day setup and fast onboarding
- White-label payment solutions
- Payment orchestration with multiple providers
- 24/7 analytics and support
- Flexible integration across platforms and channels
Services:
- Internet acquiring and alternative payment solutions
- White-label PSP and SaaS PSP products
- Payment orchestration and routing
- Mobile SDK and CMS plugin integration
- Offline payments via QR code
- Fraud prevention and secure transaction management
- Subscription, split, and one-click payments
Contact Information:
- Website: tranzzo.com
- E-mail: support@tranzzo.com
- Facebook: www.facebook.com/tranzzo
- LinkedIn: www.linkedin.com/company/tranzzo
- Instagram: www.instagram.com/tranzzo
- Address: 128 City Road, London, England, EC1V 2NX
- Phone: 0800 33 84 01
10. Online Payment Platform (OPP)
OPP is all about marketplaces and platforms. Their system is built for multi-party transactions, which means it can handle the tricky stuff – like splitting payments between buyers, sellers, and platform owners. They also offer escrow services, so funds can be held securely until a deal is complete, which adds peace of mind for users.
Integration can be done via APIs or white-label options, letting businesses shape the experience to match their brand. Meanwhile, dashboards provide real-time oversight, giving platform owners the tools to monitor transactions, track payouts, and resolve disputes as they come up. It’s a setup that works well for both C2C and B2C models.
Key Highlights:
- Supports over 90 payment methods worldwide
- Multi-split transactions for complex payment flows
- Escrow functionality for secure fund management
- White-label and API integration options
- Real-time partner and merchant dashboards
Services:
- Payment processing for marketplaces and platforms
- Merchant and consumer onboarding
- Multi-currency payouts and virtual IBANs
- Escrow and multi-split payment management
- Partner and merchant interface for transaction monitoring
- Reporting, mediation, and dispute handling
- API support and integration assistance
Contact Information:
- Website: onlinepaymentplatform.com
- LinkedIn: www.linkedin.com/company/online-payment-platform
- Address: 119 Marylebone Rd London NW1 5PU
11. Paymob
Paymob focuses on giving businesses flexibility when it comes to payments – whether it’s online transactions, in-store POS systems, or payouts to employees and suppliers. Their tools are built to plug into existing systems through APIs, which makes them appealing for companies that want to expand without overhauling everything.
They also take security seriously, offering PCI-certified solutions and fraud detection technology. On the management side, businesses can use their dashboards to keep track of transactions in real time. Extra features like subscription billing, installment plans, and payment links make it easier to adapt to different customer needs.
Key Highlights:
- Online and in-store payment options
- Wide choice of payment methods and payout features
- Integrated fraud detection and PCI security certification
- APIs built for flexibility and easy integration
- Interactive dashboards for real-time monitoring
Services:
- Online payment acceptance
- POS solutions for in-store transactions
- Payouts to suppliers and employees
- Subscription billing and installment payments
- Payment links for quick transactions
- Marketplace and digital wallet solutions
- Paymob Sync for end-to-end cashless systems
Contact Information:
- Website: paymob.com
- Facebook: www.facebook.com/PaymobCompany
- LinkedIn: www.linkedin.com/company/paymobcompany
- Instagram: www.instagram.com/PaymobCompany
12. Apps Plus
Apps Plus is a UK-based company that’s all about making mobile payments simple for businesses. They’ve worked on everything from peer-to-peer payment apps to large-scale enterprise financial tools, and they really focus on security and compliance. Everything they build follows PCI-DSS standards, with tokenisation and fraud protection baked in, so companies aren’t just getting functionality – they’re getting peace of mind. Over the years, they’ve partnered with well-known UK brands across industries like retail and automotive, which gives them a pretty solid understanding of what different businesses actually need.
What’s cool about Apps Plus is how they tailor apps to fit a company’s workflow. Sometimes that’s a slick, customer-facing app, other times it’s an internal tool that just makes the finance side of things run smoother. Their systems handle multiple currencies and international transactions, and they’ve connected with big players like PayPal, Stripe, and Worldpay. Plus, they really focus on mobile-first design, so things like one-tap payments, instant refunds, and secure logins feel natural and easy to use, not like extra features tacked on at the end.
Key Highlights:
- UK-based development with fintech expertise
- Support for multi-currency and international compliance
- Bespoke solutions for P2P, merchant, and enterprise transactions
- Integration with leading payment processors
- Built-in fraud detection and security protocols
Services:
- Mobile payment app development
- Payment gateway integration
- POS and digital wallet solutions
- Subscription and recurring payment systems
- Fraud prevention and compliance monitoring
- Custom APIs for scalable financial platforms
Contact Information:
- Website: apps-plus.co.uk
- E-mail: info@apps-plus.co.uk
- Facebook: www.facebook.com/appsplusuk
- LinkedIn: www.linkedin.com/company/apps-plus
- Address: Image+ 2 Guys Cliffe Road, Leamington Spa, Warwickshire, CV32 5BZ
- Phone: 024 7683 4788
Conclusion
Wrapping things up, it’s clear that the UK has no shortage of strong players when it comes to mobile payment integration. Some lean into building highly customisable systems for enterprises, while others keep things simple with plug-and-play tools that smaller businesses can pick up quickly. The variety is what stands out – you don’t have to force your operations into a rigid structure because there’s likely a provider that already fits the way you work.
If anything, the challenge isn’t finding a company, it’s narrowing down the options. The real trick is matching your business’s priorities – whether that’s scalability, security, or speed of integration – with a partner who knows how to deliver on those points. Payments might seem like background noise when they’re running smoothly, but choosing the right provider is often the difference between a system that quietly supports growth and one that holds you back.
