This book explores the British Labour Party and the trade unions and how their relationship with the Jews of Palestine and Israel has evolved over the past one hundred years. It also reflects the changing attitudes of the Labour Party and the unions towards the persecution of the Jews, a Jewish homeland in Palestine, Israel and antisemitism. An in-depth examination of critical events in European and Middle East history reveals the links between British unions and their Israeli union counterpart, the Histadrut (General Federation of Labour), and sets out the circumstances in which the unions went from backing the Labour Party's  1917 war aims declaration, which called for the establishment of a Jewish homeland in Palestine, through to the present day, which sees the unions promoting campaigns for boycotts and sanctions against the State of Israel.