Matter of Britain is an ethnographic fantasy which documents an English country village’s performance of the Holy Grail myth. In that myth, King Arthur’s knights quest for the Holy Grail in order to heal their wasted land. The performance took place over 12 months from 2023 to 2024 in multiple locations across the parish of Mayfield, East Sussex. Over 300 members of the community took part as questing knights, angelic choirs, guiding anchorites and tempting devils. The work was supported by an Arts Council England Project Grant, the Lund Trust, High Weald AONB, East Sussex Arts Partnership, the University of Reading and the Museum of English Rural Life.