One of my favorite festiavls (I will have performed there four out of the last five years), has been the Redditch Folk Festival, now the Redditch-Arden Folk Festival, just a short bit out of Birmingham, UK. It's a real singers festival with some occasional legends such as Martin Carthy and Bill Caddock, both who performed there last year as well as a great many others with fabulous voices. Since they changed locations I believe they have also changed their web site address but you might be able to find it on a search (Redditch Folk Festival). Lost of fun and singing and "real ale" too.