I've just had a look at the line up for this festival and can see that the majority of acts are not particularly traditional English in the purest sense either.

There's nothing necessarily wrong with that but it does suggest that large festivals of this kind do need a bit of variety and also need to include various folk and roots music in its broadest sense to attract enough of an audience to fill larger venues and tents.

Whether we like it or not, traditional music and/or the "folk music" we have been used to hearing since the days of the revival is very much a minority taste and, besides, is arguably much more suited to smaller venues and stages.

The same applies in Scotland too where larger festivals such as Celtic Connections also include several acts which could only be thought of as traditional, folky, or even "celtic" if you had the most wonderful imagination.

Having said all that, I 've always liked Jools Holland along with several other acts who aren't really folk but I'm obviously one of those who doesn't have a clue(Because I can listen to different kinds of music)which was suggetsed recently on "Damned Bloody Depressing" thread.
:-)