I will give way in a moment, but first I will make some progress, because many hon. Members wish to speak in the debate.
It is also important that any industrial action reflects the current will of union members. As things stand, that is not always the case. Union leaders can secure a mandate for industrial action and then keep using it for as long as they please. For example, in October 2013 the NASUWT justified a walk-out by citing a mandate acquired in November 2011, almost two years earlier. That is hardly a constructive approach to industrial relations.