With strikes apparently back in fashion, Unreliable Evidence explores the law relating to trades unions and industrial action. Wildcat strikes and secondary picketing are now illegal, and new legislation imposes complex rules on how and when strikes can be called. Clive Anderson and guests, including a judge and the assistant general secretary of one of Britain's largest unions, discuss why both employers and trades unions are now, increasingly, fighting each other in the courts. Also taking part are the senior barristers who have represented either side in the ongoing British Airways cabin staff dispute. Alleged irregularities in the strike balloting process have already resulted in a series of court hearings, injunctions and high court appeals. Both the TUC and the CBI are calling for reform of trades union law, but whom does the law currently favour - the bosses or the workers? Producer: Brian King An Above The Title production for BBC Radio 4.