Welcome!
At the moment, customers have to choose between a US or a UK account. You can’t have both opened at the same time. However, we’re currently working out how to enable you to keep your UK account as you open a US account here:
With this, you’ll be able to quickly start your US application and once opened, you’ll be able to toggle between regions in the app. More to come as we’re still working out the details on how this should work.
@JIMMWX is correct, Will’s account is a special employee account at the moment where he has a version where he can toggle between US and UK 