The International Bureau for the Suppression of Traffic in Persons: British National Committee (1899-1953) was established at the end of the nineteenth century, the widespread campaign against the Contagious Diseases Acts had had the effect of focussing attention on the issue of prostitution. This had the result of encouraging the growth of groups like the National Vigilance Association whose aim was to work against the trade and its causes. In 1898, this body agreed to address concerns about the international aspect of prostitution and began laying the foundations of an international federation of bodies, working towards the abolition of the traffic in persons, which came into being in 1899. This International Bureau for the Suppression of the Traffic in Persons consisted of representatives from each of the constituent bodies, including five from the National Vigilance Association itself. Subsequently, this core of five became the English National Committee in accordance with the International Bureau's constitution regarding its branches. Subsequently, other British groups and societies were requested to send representatives to their meetings so that in 1907 the organisation became the British National Committee for the Suppression of the White Slave Trade. Six years later, their increasingly broad base may be judged from a list of member associations and societies in 1913: Church Army, Church of England Moral Welfare Society, Association for Moral & Social Hygiene, West London Mission, British Social Hygiene Council, Catholic Women's League, Manchester Moral Welfare Association, Alliance of Honour, National Vigilance Association, Liverpool Hygiene Association, National Vigilance Association of Scotland, Jewish Association for the Protection of Women and Girls, the International Bureau, London Haven for Women and Girls, Missions to Seamen, National Council of Women, Public Morality Council, Central After Care Association for Women and Girls, Presbyterian Church of England, Methodist Church, and the Hull Vigilance Association. During World War I the Committee did not meet between 1915 and 1918 but was reconstituted in 1919 when its name was changed to The British National Committee for the Suppression of the White Slave Traffic and the International Traffic in Women. By 1932, membership was open to all major British organisations doing practical work for the protection of women and children and the group flourished throughout the 1930s. World War II again disrupted international work and in the post-war years membership was widened once more to include societies working for the protection of women and children. The National Vigilance Association faced financial difficulties after the war, leading to its amalgamation with the British National Committee in 1953. The new body was called The British Vigilance Association and the National Committee for the Suppression of Traffic in Persons, but was generally known as the British Vigilance Association.