The Mill is William Ellis School's centre for outdoor learning, located in the picturesque village of Forest Green within the Surrey Hills. This venue has been integral to the school's personal development programme for over 30 years, offering a unique environment for various educational activities. The old corn watermill and attached cottages are set on a ten-acre estate featuring woodland, meadow, and a stream, providing a serene backdrop for learning. The Mill accommodates up to 40 pupils and staff year-round, with additional camping options available in warmer months. Facilities include a field work laboratory, a computer-equipped classroom, and a games room. The venue hosts yearly camps for key stage 3 students, focusing on activities such as water sports and outdoor art projects, and serves as a base for study field trips in Geography and Biology, as well as master classes in Music and Drama. This versatile space is ideal for educational retreats, workshops, and team-building events.