The situation in urban UK is very different that in USA.
    I have eight children (16 -32) and 3.5 grandchildren. Young people love some kinds of "folk" music. Little children like all of the old stuff. Teenagers like it too. if it's done to their tastes.
    Some of what I see is a folk "elitism," that is very exclusive.
New people, new music, new arrangements aren't wanted or encouraged. We have that identical problem here in our local folk music association; it's like a private club where the sixty-year-olds play the same music to the same crowd that dwindles every year.
    My approach has been to tie the music with history, personalize it with genelogy, and make it fun and relevant to young people.