Best Financial Data APIs in the UK
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Compare the Top Financial Data APIs in the UK as of October 2026
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What are Financial Data APIs in the UK?
Financial data APIs are application programming interfaces that provide developers and businesses with real-time or historical financial data, such as market prices, economic indicators, company fundamentals, and transaction records. They allow seamless integration of financial information into applications, dashboards, analytics platforms, and trading systems using standardized request/response protocols. These APIs often include features like authentication, rate limiting, and data formatting to ensure reliable and secure access to data from exchanges, banks, or data providers. Many financial data APIs support multiple asset classes, including equities, fixed income, commodities, FX, and crypto, enabling broad use cases across fintech and enterprise software. By abstracting the complexity of sourcing and normalizing diverse financial data, these APIs accelerate development and support data-driven decision-making. Compare and read user reviews of the best Financial Data APIs in the UK currently available using the table below. This list is updated regularly.
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Tuna
Tuna
Perform a single easy integration with Tuna's open source payment gateway and access hundreds of payments processors and anti-fraud tools worldwide. We use tokenization to protect sensitive customer data. Tuna is a PCI Level 1 Service Provider, the highest level of PCI DSS certification. Conduct A/B tests to continuously improve payment indicators and compare your results. Better understand your business and move faster with testing tools that provide autonomy to a payments team to conduct experiments without having to prioritize items on the IT roadmap. Tuna already processes 100% of online payments from Riachuelo, a giant Brazilian retail website.
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