Businesses choosing a payment integration partner need more than a gateway connection. The right provider should understand APIs, payment flows, subscriptions, security, reconciliation, and the specific requirements of eCommerce or fintech products. This list compares 14 companies with verified payment gateway integration capabilities and UK market presence.
1. Itexus
Itexus focuses heavily on fintech software development and complex financial integrations. Its payment integration work covers providers including Stripe, Adyen, PayPal/Braintree, Square, and Dwolla, with use cases spanning one-off and recurring payments, subscriptions, SCA/3-D Secure, refunds, chargebacks, reconciliation, and payouts. The company also describes experience integrating payment rails with banking, KYC/AML, open banking, and legacy systems. Itexus is headquartered in the United States with development offices in Europe and serves financial services organisations across the UK and Europe.
Key Facts
- Best for: Fintech products and complex financial platforms
- Core services: Payment gateway integration, payment gateway API integration, fintech software development, banking API integration
- Payment providers: Stripe, Adyen, PayPal, Braintree, Square, Dwolla
- Industries: Fintech, banking, payments, lending, wealth management
- Location: US headquarters, European development offices, UK market coverage
- Notable strength: Payment integrations involving compliance, retries, reconciliation, and complex financial workflows
Contact Information
- Website: itexus.com
- Email: [email protected]
- Address: 8, The Green, STE road, Dover, DE 19901
- Facebook: www.facebook.com/itexus
- Instagram: www.instagram.com/itexus.soft
- LinkedIn: www.linkedin.com/company/itexus-fintech-software
- Twitter: x.com/ItexusSoft
2. A-Listware
A-Listware combines software development with application integration and has specifically published payment integration work for UK and European businesses. Its payment-related capabilities include connecting digital platforms with payment gateways, while its wider software offering covers application development, mobile apps, testing, cloud services, and IT consulting. A-Listware maintains a UK presence and lists St. Leonards-On-Sea as its UK office location.
Key Facts
- Best for: Businesses combining payment integration with custom software development
- Core services: Application integration, software development, mobile development, payment integration
- Industries: Banking, lending, investment, insurance, retail, eCommerce
- Location: St. Leonards-On-Sea, UK
- Notable strength: Payment integration within broader application development and IT projects
Contact Information
- Website: a-listware.com
- Email: [email protected]
- Phone: +44 (0)142 439 01 40
- Address: St. Leonards-On-Sea, TN37 7TA, UK
- Facebook: www.facebook.com/alistware
- LinkedIn: www.linkedin.com/company/a-listware
3. Fourmeta
Fourmeta is a London-based eCommerce development company with payment gateway integration among its dedicated services. The agency works with online stores and custom eCommerce platforms, integrating payment gateways as part of broader commerce development. Its published services also cover API integrations, headless commerce, Shopify development, custom software, and checkout optimisation. This makes Fourmeta particularly relevant for merchants that need payment integration alongside a wider eCommerce rebuild or platform project.
Key Facts
- Best for: eCommerce businesses and Shopify-based projects
- Core services: Payment gateway integration, eCommerce development, API integration, Shopify development
- Specialization: Commerce platforms and checkout experiences
- Location: London, UK
- Notable strength: Payment integration combined with broader eCommerce engineering
Contact Information
- Website: www.fourmeta.co.uk
- Email: [email protected]
- Phone: +44 20 3355 6187
- Address: 3rd Floor, 45 Albemarle Street, Mayfair, London W1S 4JL, United Kingdom
- LinkedIn: www.linkedin.com/company/fourmeta
- Instagram: www.instagram.com/fourmeta.agency
- Twitter: x.com/Fourmeta_Agency
4. Software Planet Group
Software Planet Group provides bespoke payment gateway and transaction-platform development for businesses that need more than a standard plugin. Its payment work includes Stripe, PayPal, Adyen, and Open Banking integrations, as well as custom gateway development, recurring billing, fraud prevention, mobile payments, multi-currency processing, and tokenisation. The company also positions payment technology within its broader fintech and eCommerce development work, making it suitable for projects where payment functionality is part of a larger software platform.
Key Facts
- Best for: Custom payment platforms and fintech software
- Core services: Payment gateway development, processor integrations, recurring billing, fraud management
- Payment providers: Stripe, PayPal, Adyen, Open Banking APIs
- Industries: Fintech, eCommerce, marketplaces, travel, SaaS
- Location: Guildford, UK
- Notable strength: Bespoke payment infrastructure and transaction workflows
Contact Information
- Website: softwareplanetgroup.co.uk
- Address: Austen House, Station View, Guildford GU1 4AR
- LinkedIn: www.linkedin.com/company/software-planet-group
- Facebook: www.facebook.com/softwareplanetgroup
5. Nexur Technology
Nexur Technology approaches payment integration as part of wider software and eCommerce engineering. Its payment services cover Stripe, Braintree, PayPal, GoCardless, Adyen, Klarna, Apple Pay, and Google Pay. The company specifically addresses webhook handling, idempotency, retries, refunds, subscription states, 3-D Secure, reconciliation, multi-currency payments, and PCI-related architecture. Its service offering also covers marketplaces, SaaS subscriptions, eCommerce, and enterprise applications, giving it a broad fit for businesses where payment logic is closely connected to the rest of the product.
Key Facts
- Best for: SaaS, eCommerce, and marketplace payment systems
- Core services: Gateway integration, subscription billing, multi-currency payments, reconciliation
- Payment providers: Stripe, Braintree, PayPal, GoCardless, Adyen, Klarna
- Specialization: Payment infrastructure and full-stack engineering
- Notable strength: Handling payment edge cases such as failed webhooks, retries, refunds, and subscription states
Contact Information
- Website: www.nexur.co.uk
- Email: [email protected]
- Phone: +442039962514
- LinkedIn: www.linkedin.com/company/nexur-technology
- Instagram: www.instagram.com/nexurtechnology
- Facebook: www.facebook.com/nexurtechnology
6. Cellpoint
Cellpoint is a London-based software company focused specifically on payment technology. Its services include custom payment gateway development and integration through server-to-server, hosted payment page, and iFrame approaches. The company also develops systems supporting cards, mobile wallets, bank transfers, online banking, virtual terminals, and payout solutions. This makes Cellpoint a relevant option for organisations that need a dedicated payment engineering partner rather than a general web development agency.
Key Facts
- Best for: Dedicated payment software projects
- Core services: Payment gateway development, gateway integration, payment app development
- Integration methods: S2S, hosted payment page, iFrame
- Payment types: Cards, mobile wallets, bank transfers, online banking
- Location: London, UK
- Notable strength: Dedicated focus on payment software and gateway engineering
Contact Information
- Website: cellpoint-tech.co.uk
7. Omnitech Business LTD
Omnitech Business provides payment gateway integration for eCommerce stores, SaaS platforms, booking systems, marketplaces, and service businesses. Its published integrations include PayPal, Stripe, Razorpay, Square, and Worldpay, with support for multi-currency payments, digital wallets, bank transfers, subscription billing, refunds, invoicing, and transaction reporting. The company also states that its integrations can work with Shopify, WooCommerce, Magento, Wix, and bespoke systems.
Key Facts
- Best for: SMEs and eCommerce businesses
- Core services: Payment gateway integration, subscription billing, eCommerce development
- Payment providers: PayPal, Stripe, Square, Worldpay, Razorpay
- Platforms: Shopify, WooCommerce, Magento, Wix, bespoke systems
- Location: Northampton, UK
- Notable strength: Combining payment integration with broader outsourced IT services
Contact Information
- Website: www.omnitechbusiness.co.uk
- Email: [email protected]
- Phone: +44 74124 70170
- Address: 164a Birchfield Road E, Northampton, NN3 2HF, United Kingdom
- LinkedIn: www.linkedin.com/company/omnitech-business-ltd
- Facebook: www.facebook.com/OmnitechBusinessLTD
8. Code Inclusive
Code Inclusive provides payment gateway integration services for eCommerce businesses across Yorkshire and the wider UK. Its published gateway experience includes PayPal, Stripe, Square, Authorize.Net, Amazon Pay, Adyen, Worldpay, 2Checkout, Braintree, Klarna, and Shopify Payments. The company also handles payment testing, troubleshooting, security configuration, and integration with regional or custom payment solutions.
Key Facts
- Best for: UK eCommerce businesses
- Core services: Payment gateway integration, API integration, eCommerce development
- Payment providers: Stripe, PayPal, Adyen, Worldpay, Braintree, Klarna, Shopify Payments
- Location: Wetherby, North Yorkshire
- Notable strength: Broad gateway coverage for eCommerce implementations
Contact Information
- Website: codeinclusive.co.uk
- Email: [email protected]
- Phone: 07805573286
- LinkedIn: www.linkedin.com/company/code-inclusive-leeds
- Instagram: www.instagram.com/code.inclusive
- Facebook: www.facebook.com/people/Code-Inclusive/61587636552716
- Twitter: x.com/codeinclusiveuk
9. Novoura
Novoura is a Manchester-based software development company offering API development and system integration services. Its integration portfolio includes payment gateway connections to Stripe, PayPal, and local payment providers, alongside custom APIs and legacy-system bridges. The company works with UK businesses on broader software projects, making it a practical option when payment integration needs to connect with CRM, accounting, web, or other business systems.
Key Facts
- Best for: SMBs needing payment and system integrations
- Core services: API development, payment gateway integration, custom integrations
- Payment providers: Stripe, PayPal, local payment providers
- Location: Manchester, UK
- Notable strength: Connecting payment systems with existing business software
Contact Information
- Website: novoura.co.uk
- Email: [email protected]
- Phone: +44 7476 097289
- Address: Novoura, First Floor, Swan Buildings, 20, Swan Street, Manchester M4 5JW
- Facebook: www.facebook.com/people/Novoura/61589619478460
10. Mass Creations
Mass Creations is a Suffolk-based software company supporting organisations across the UK with payment gateway integrations. Its work covers checkout integration, webhook processing, reconciliation, refund and dispute flows, failure handling, monitoring, and transaction-state tracking. The company also connects payment systems with storefronts, finance platforms, reporting systems, and ERP environments, which is useful for businesses that need payment data to flow into operational processes rather than remain isolated at checkout.
Key Facts
- Best for: Businesses connecting payments with finance and operational systems
- Core services: Payment gateway integration, API development, webhook processing, reconciliation
- Industries: eCommerce, SaaS, operational software
- Location: Suffolk, UK
- Notable strength: Connecting checkout transactions with finance and reporting workflows
Contact Information
- Website: masscreations.co.uk
- Email: [email protected]
- Phone: 01284 330290
11. Software Development UK (SD:UK)
Software Development UK provides software engineering and eCommerce development services, with dedicated expertise in payment gateway integration. Its published capabilities cover eCommerce platforms, secure payment integrations, and financial banking integrations, supported by offices in London, Bristol, and Manchester. This makes the company relevant to organisations looking for payment integration as part of a larger web application, eCommerce, or financial software project.
Key Facts
- Best for: Larger software and eCommerce projects
- Core services: Software development, eCommerce development, payment gateway integration
- Specialization: Web applications and financial integrations
- Locations: London, Bristol, Manchester, UK
- Notable strength: Payment integration within broader software engineering projects
Contact Information
- Website: www.softwaredevelopment.co.uk
- Email: [email protected]
- Phone: 020 3951 0555
- Address: 10 Lower Thames St, London EC3R 6AF
- LinkedIn: www.linkedin.com/company/software-development-uk
- Facebook: www.facebook.com/SoftwareDevUK
- Twitter: x.com/SD__UK
12. Apps Plus
Apps Plus is a Midlands-based software development company that works on payment-enabled mobile and business applications. Its financial app development services include integrations with payment gateways and open banking APIs, while its published payment app work covers tokenisation, PCI-DSS requirements, payment APIs, and secure transaction flows. A case study also documents an application integrated with Stripe, Apple Pay, and Google Pay.
Key Facts
- Best for: Mobile applications with integrated payments
- Core services: Payment app development, payment gateway integration, mobile development
- Payment technologies: Stripe, Apple Pay, Google Pay, open banking APIs
- Location: Coventry, UK
- Notable strength: Payment integration within bespoke mobile applications
Contact Information
- Website: apps-plus.co.uk
- Email: [email protected]
- Phone: 024 7683 4788
- Address: Unit 1, The Depot Electric Wharf, Coventry, CV1 4JP, UK
- LinkedIn: www.linkedin.com/company/apps-plus
- Facebook: www.facebook.com/appsplusuk
13. Symatec
Symatec is a London-based payments consultancy focused on integration, architecture, provider selection, and payment ecosystem projects. Its hands-on capabilities include payment API consultancy, terminal and POS integrations, middleware and orchestration, solution design, certification support, acquiring migrations, and legacy payment modernisation. The company works across retail, hospitality, fintech, PSP, acquiring, and enterprise environments, making it a stronger fit for organisations dealing with complex payment estates rather than simple checkout plugins.
Key Facts
- Best for: Enterprise payment architecture and complex integrations
- Core services: Payment API consultancy, integration design, POS integration, orchestration, migrations
- Industries: Retail, hospitality, fintech, PSPs, acquiring
- Location: London, UK
- Notable strength: Hands-on payments expertise across merchants, PSPs, acquirers, and software vendors
Contact Information
- Website: www.symatec.co.uk
- Email: [email protected]
- Phone: +44 (0) 7346 812 809
- LinkedIn: www.linkedin.com/in/sherif-seweafi
14. eCom Pay
eCom Pay combines payment processing with technical integration support for UK merchants. The company provides gateway implementations for platforms including WooCommerce, Shopify, Adobe Commerce, and custom-built systems, alongside REST APIs, server-to-server gateways, hosted payment pages, mobile SDKs, and embedded payment fields. Its custom API supports bespoke checkouts, marketplaces, booking engines, SaaS billing, tokenisation, 3-D Secure 2, and recurring payments. eCom Pay is UK-based and has operated in payments since 2010.
Key Facts
- Best for: UK merchants needing payment processing plus integration support
- Core services: Payment gateway integration, custom payment APIs, recurring billing, payment processing
- Platforms: WooCommerce, Shopify, Adobe Commerce, custom platforms
- Specialization: Custom checkouts, marketplaces, subscriptions, and payment APIs
- Location: UK
- Notable strength: Integration support combined with acquiring and payment processing
Contact Information
- Website: ecompay.co.uk
- Phone: 0345 548 0072
Conclusion
Choosing among payment gateway integration services companies in the UK depends largely on the complexity of the payment environment and the wider software requirements of the business. Companies such as Itexus, A-Listware, Symatec are suited to projects involving fintech platforms, payment architecture, APIs, and complex integrations, while agencies such as Fourmeta and Code Inclusive may be a better fit for eCommerce-focused implementations.
Before selecting a partner, businesses should assess the gateways and payment methods they need, subscription and recurring billing requirements, security and compliance considerations, scalability, reconciliation, and integration with existing systems. A provider with relevant experience in the company’s industry and technical environment can reduce integration risks while creating a payment infrastructure that is easier to maintain and expand.