There are two grounds for revising the target. One is where there is new scientific advice demonstrating more is needed and the other is where a new international agreement is entered into with a higher level of ambition. It is not foreseen that the climate change advisory council would take a policy role where it would set a higher level of ambition than is set by the 51% figure. The 51% figure is incredibly ambitious and it will be extremely hard to meet it. We saw reductions in emissions, even during a year of l…