Three presentations from this workshop, held at UNSW on 21 April, 2005, are now available: "Introduction and agenda," Hugh Outhred [pdf], "NGAS registry analysis," Rob Passey [pdf] and "NGAS performance assessment," Iain MacGill [pdf]. A brief summary [pdf] and two discussion papers on this work are also available. Paper DP_050405 delivers a detailed analysis of the NGAS Registry for the 2003 compliance period and can be downloaded here [pdf]. Paper DP_050408 takes the findings of the registry analysis to make an assessment of the scheme's performance to date, develop scenarios of its possible future performance to 2012, and consider their policy implications. It can now be downloaded here [pdf].