The leader of Britain's biggest union Unite yesterday warned of more strikes and industrial action in the months ahead. “I think it’s inevitable that there will be further campaigns, further strikes,” Len McCluskey told the BBC, adding that it may roll on “for the next few years”. McCluskey also warned Labour to be ready for an early election. McCluskey was speaking ahead of his union's biennial conference this week in Brighton. He will address the conference on Monday for the first time as general secretary.