@Johnny put me on to Child & Co and I signed up like, I suspect, many do because it’s different-looking and sounding and it’s not high-street and probably no one you know has one.
Unless I’m missing something, Child & Co is simply a version of an RBS current account with no unusual or premium features. Certainly not in the mould of private banks.
Edit: This 
impression was gained during sign-up. As we know, Childs & Co’s full feature list is not writ large upon application - it’s not that easy to even find them during the initial application (as others have similarly found 
).