This year's Saddleworth Folk Festival has a Young Artist concert featuring Young Un's, Askew Sisters and Gene Burton - all of these are really good and well worth discovering.

4Square are brilliant, much better than many older / more established artists, and they have a huge variety of different influences.

There is a band called Tri as well who are quite young (all still at school), who do a lot of Irish music amongst other things.

All of the above have sites on myspace so it's easy to check them out.