This is a collection of folk and traditional songs in English from England, Ireland, Scotland and various other places.
Songs of England
http://www.musicanet.org/robokopp/english.html
Folk Music of England, Scotland, Ireland, Wales & America
http://www.contemplator.com/folk.html
The Brobdingnagian Bards - A Bard's Celtic Lyric Director
http://www.thebards.net/music/
The English Folk Dance and Song Society
http://www.efdss.org