Arabella Spencer-Churchill was an English charity founder, festival co-founder, and fundraiser.
In 1971, Churchill played a major role in the development of the Glastonbury Festival. In 1979, she set up the Children's Area of the Festival and also the Theatre Area. Until her death, she ran the Theatre and Circus Fields. Her duties in the 2007 festival involved the booking and management of some 1500 separate acts. She also founded and was the director of the Children's World charity.