Gordon Brown has warned that a UK-wide postal strike, due to begin on Thursday, would be "counter productive". The Prime Minister has urged union leaders and Royal Mail bosses to pursue negotiation and mediation. In the Commons, David Cameron accused Mr Brown of "an appalling display of weakness" by apparently dropping plans to reform the company. The Tory leader said it required "leadership, some backbone and some courage" to prevent union militancy. He urged the Prime Minister to "condemn these strikes and join me in sending a direct message to the trade union to call this strike off". Mr Brown replied: "I said exactly that last week, that it was counter productive for there to be a strike. It's in nobody's interest that this strike goes ahead."