In total, avaiation emissions represent around 6% of UK greenhouse gas emssions.
Over the first carbon budget period aviation emissions are projected to rise absent further emissions. They can be reduced through a combination of fuel efficiency improvements, use of biofuels and a moderation of demand growth.
Policy approaches to aviation emissions should be at the global or EU level, given the international nature of the industry. Until these are agreed, our recommendations is that an appropriate long-term planning assumption for aviation is for emissions to be around 2005 levels in 2050.
An increase in demand of around 60% would be consistent with this, and should be used by the Government when assessing related policies (e.g. airport capacity)