The Spiritualists' National Union (SNU) stands as the foremost organization for Spiritualism in the UK, dedicated to fostering a community grounded in the exploration and celebration of Spiritualist philosophy. Established in 1901, the SNU serves a vital role in advancing understanding and practice in spiritual matters through a network of approximately 300 churches and centers, alongside a robust membership of over 2,500 individuals. The Union not only emphasizes education through various courses—including mediumship, healing, and spiritual leadership—but also promotes communal healing practices and the development of mediums.

With a structured system that ensures active member engagement and governance, the SNU is committed to enhancing the spiritual journey of its members and the wider community. The organization offers resources for those interested in joining or visiting Spiritualist churches, as well as opportunities for further learning through the Lyceum and SNU international initiatives. By combining tradition with modern practices, the SNU remains a pivotal force in contemporary spirituality.