My better half has a CD of Andreas Scholl singing English folk songs, many credited as Vaughan Williams compositions.

Me too - Wayfaring Stranger: the one with the lovely folksy Magic Roundabout digipak cover (see HERE) - although there's a new edition with a very different cover. I love it very dearly - just as I love Davie Stewart, Cox, Larner, Tanner et al; Bellamy (of course) and The Unthanks, Jack Langstaff, John Jacob Niles, Jim Eldon - all of whom are defined by their own unique (subjective) voices in the context of a broader cultural (objective) context, as are we all, whatever our personal influences & inspirations.

Singing in your own voice? I don't think we have much of a choice really. "My tongue is my own," True Thomas said.... Voices are amazing things; like our eyes, ears, noses, genitals, lungs; but the collectivity of our humanity is defined by our individuality, without which there's nothing at all...