In England, Ireland, Scotland, and Wales, festivals expansively run the gamut from celebrations of flowers, seasonal harvests, and food and drink to the fine arts, music, theatre, and religion, in locations ranging from metropolitan centres, cathedrals, public and private parks and gardens, to locales rural in the extreme. Festivals could be unpredictable, and their organisers doubtless had to navigate uncertainties and last-minute cancellations, not to mention audience reception to programming; perhaps it is that element of unpredictability that gives festivals a general air of anticipation and excitement. This chapter explores post-Second World War festival culture with examples emerging from the Norfolk and Norwich Triennial Festival, the Glyndebourne Opera Festival, the Cheltenham Music Festival (subsequently renamed the Cheltenham Festival of Contemporary British Music), the Three Choirs Festival, the Aldeburgh Festival of Music and the Arts, and the Festival of Britain. The chapter also considers the intersections of the postwar socialised Arts Council funding for music and the arts in the British Isles, and the disparity between funding for metropolitan and rural centres.