UK Music Festivals
http://www.isleofwightfestival.com
http://www.creamfields.com
Other sources for festivals
http://www.skiddle.com/festivals/
http://wikifestivals.com/wiki/creamfields-uk
http://www.festaff.co.uk/jobs-at-festivals/creamfields-music-festival
http://www.festivalplanet.com/