Creating a part from a feature - top-down/in context

Daftly I have created 'top-down' modelled features within the context of a single part file (not in an assembly as I should have done).

I'd like to turn some of the features (unmerged) into individual parts - this is dead easy in UG, but I can't figure out how to do it in SW - any ideas please?

Thanks in advance!

SolidworksAssemblies