Payment Gateway Integration Services Tailored for London Businesses
TSKM is free. Payment Gateway Integration in London: Accept online payments with MercadoPago, Stripe, and Wise: checkout, subscriptions, split payments, and reconciliation.
For London-based businesses expanding their digital presence, seamless online transactions are essential to customer satisfaction and revenue growth. At TSKM, we specialize in payment gateway integration that connects your e-commerce platform, CRM, or ERP with secure, reliable payment processors. Whether you’re a growing startup or an established enterprise, our solutions ensure smooth checkout experiences, reduce payment failures, and enhance operational efficiency. With London’s thriving tech ecosystem, where over 8,600 startups drive innovation, businesses need payment systems that scale effortlessly and comply with evolving financial regulations.
Local data
London is home to 983,000 private-sector businesses (ONS/DBT Business Population Estimates 2024) and maps 8,604 tech startups — #1 in the UK and #3 worldwide (StartupBlink 2025).
42 unicorns and +29.8% YoY growth; ~94 startups per 100,000 inhabitants (StartupBlink 2025). One of Europe's largest fintech and enterprise-software ecosystems.
Source:ONS/DBT Business Population Estimates 2024 · StartupBlink GSEI 2025 · 2024-2025
Market data
Mercado Pago procesó US$197.000 millones en pagos durante 2024, un 34% más que el año anterior
Source:Mercado Libre — resultados Q4/FY 2024 · 2024
What's included
- Integration of MercadoPago, Stripe, and/or Wise based on your market
- Optimized one-page checkout and payment links
- Subscriptions and recurring payments with plan management
- Split payments for marketplaces (collecting from multiple sellers)
- Webhook confirmations and transaction status handling
- Automatic reconciliation and payment reports
How we work
Discovery
We define gateways, currencies, and billing model (one-time, subscription, split).
Integration
We connect the checkout and confirmation webhooks.
Testing
We test every flow (payment, refund, failure) in sandbox before production.
Reconciliation
We set up automatic reconciliation and payment reports.
Free with TSKM · custom-built with PairProgramming
Use TSKM free to manage your team. Want to expand your services, payment gateway integration in London? It's built by PairProgramming. Get in touch.
Frequently asked questions
What payment gateways do you integrate with?+
We work with leading payment providers such as Stripe, PayPal, Wise, and Adyen, as well as regional and niche gateways. Integration is customized to your existing systems and business requirements.
How long does payment gateway integration take?+
Integration timelines vary based on complexity, but most projects are completed within 2 to 4 weeks. We prioritize minimal disruption to your operations while ensuring full functionality.
Is payment gateway integration secure?+
Yes. All integrations follow PCI DSS compliance standards and use encrypted connections to protect customer data. Our solutions include fraud detection and real-time monitoring to safeguard transactions.
Can you integrate payment gateways with custom systems?+
Absolutely. Whether your platform is built in-house or uses third-party tools, we design integrations that align with your workflows and technical specifications.