For many, the spread of the missionary movement overseas is inextricably linked with the rise of the British Empire. Missionaries often preceded the arrival of colonial government in many parts of the world and some of the first recorded encounters between Westerners and indigenous peoples are those of missionaries seeking converts to Christianity. At the height of the missionary movement, between 1880 and 1920, some sixty societies based in the UK were actively engaged in this work with many thousands of missionaries going out to the mission field. The legacy of all this global activity lies in the archives, personal papers, books and pamphlets, published annual reports, missionary magazines, photographs, films, slides, sound recordings and artefacts scattered throughout museums, archives and libraries across the UK.