This looks interesting: The Sheffield Carols -Yorkshire Folk Arts- Patrons: Norma Waterson & Kate Rusby
"For detailed information, and access to a full library of recordings and publications, you can contact Village Carols, a non-profit organisation that exists to promote and record these carols. Village Carols publishes a number of excellent recordings from different carol traditions, and a selection of arrangements of tunes and words. They also organise a biennial festival: the next one is on Saturday 2 December 2006 at Grenoside Community Centre. Video films of previous festivals, including the special Millennium Festival at the Cutlers Hall, Sheffield, have been made by Garland Films in association with Village Carols, and are also available."

http://www.villagecarols.org.uk/
"Village Carols is a non-profitmaking organisation which exists to record and promote local carol singing traditions. Its main roles are undertaking fieldwork and research, organising the collection of source material, and promoting local carol singing traditions."