UK’s NatWest Bank has a new UWP app with Continuum support
NatWest now supports Windows 10 Mobile
Windows 10 Mobile users in the United Kingdom have a new banking app by NatWest. The app is universal, and it works in Continuum mode, but not yet on a PC. You can use your Windows 10 smartphone to access your bank account, get cash without using the debit card, pay a bill, send money to your contacts, check balance and transactions, and more.
If you have a Lumia 950 or another high-end Windows 10 Phone, you could use the NatWest app on an external monitor with keyboard and mouse.
Here is the link to the NatWest Bank in the Store.