Well, I probably have a fairly large proportion of my repertoire as English Traditional (and am trying to get more Kent Traditional). NE Kent

Essex Girl does largely traditional stuff too (SE London based).

Kev the Clogs sings unaccompanied with a fair share of traditional. (Mid-Kent)

Quite a lot of Dutch Pot's stuff is traditional or music hall. Also NE Kent. Non-catter.

No longer in this area, but Jon Loomes does almost wholly traditional stuff (and very well too).