 A permanent headquarters was opened in Whitechapel in February 1904, and a nationwide organisation was launched at a conference in Manchester in 1906.Poale Zion was active in Britain during World War I, under the leadership of J Pomeranz and Morris Meyer, and influential on the British labour movement, including on the drafting (by Sidney Webb and Arthur Henderson) of the Labour Party’s War Aims Memorandum, recognising the "right of return" of Jews to Palestine, a document which preceded the Balfour Declaration by three months.In this period, it published the periodical "Jewish Labour Correspondence".