[Thanks to emplaw.co.uk for allowing me to use their summary]
Speaking at the TUC annual conference in Liverpool, the Prime Minister has said: "I believe that the fight for fairness must include agency workers and so I pledge... that when parliament returns our new legislative programme will include equal treatment for agency workers".
It presumably follows that Gordon Brown intends to ensure that Britain does not delay implementation in the UK of the EC Agency Workers directive "on temporary agency work" of 19th November 2008). The Directive itself allows until 5th December 2011 for implementation.
See here for more.