It would be vastly in the interests of clarity to leave Riverdance out of it. It's nothing to do with Irish trad (whether real or fake) and its not really very much to do with the BNP's own "music" (which consists of trashy ditties about how nice the English countryside would be if it weren't for immigrants spoiling the view).

It's about this vile bunch of thugs expropriating English music, not just trad but singer-songwriter and (quite extensively) neo-classical. Just take a look at the Excalibur catalogue, much of which is in there without the artists' permission or knowledge. True, they too don't seem to actually know what English music is, including, haphazardly a smattering of Scottish, American and European recordings. However, the point is that the BNP is attempting to claim support from performers who have not given it.