The Trades Union Congress has voted at its annual conference to withdraw co-operation with Israeli organisations, including the Israeli trade union the Histadrut.
They said unions should "review their bi-lateral relations with all Israeli organisations, including Histadrut".
Although it was by no means a unanimous vote, it is still a significant step for the TUC.
It represents an unprecedented break between the British trade unions and the Histadrut , a relationship that goes back to the foundation of the state of Israel.
