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Portrait of Labour Party politician Roy Jenkins (1920-2003), Deputy Leader of the Labour Party, sitting in a first class train carriage as he returns to his constituency in Manchester following his decision to vote in the House of Commons to join the European Common Market, November 1st 1971. (Photo by Paul Popper/Popperfoto/Getty Images)

Portrait of Labour Party politician Roy Jenkins (1920-2003), Deputy Leader of the Labour Party, sitting in a first class train carriage as he returns to his constituency in Manchester following his decision to vote in the House of Commons to join the European Common Market, November 1st 1971. (Photo by Paul Popper/Popperfoto/Getty Images)