If you&#x27;re in the UK and want a banking API, I&#x27;m building <a href="http:&#x2F;&#x2F;teller.io&#x2F;" rel="nofollow">http:&#x2F;&#x2F;teller.io&#x2F;</a>. It&#x27;s been in private beta about 2.5 months and access will be opening more broadly soon. I couldn&#x27;t wait for banks to get themselves into gear so I reverse engineered all of their mobile apps, took their private APIs and expose a single unified API through Teller.<p>So far the RBS banks, e.g. Natwest are in prod. If you bank with them, want super early access, understand it&#x27;s beta product and will give some feedback: sg &lt;&gt; @ &lt;&gt; teller.io