To ask the Secretary of State for Transport what modelling the Government has undertaken of the impact of the trend in aviation's proportion of total UK emissions of greenhouse gases on the costs and reduction requirements of other UK emissions sectors with, particular reference to (a) business, (b) public services and (c) residential use.
International aviation is outside the scope of our domestic targets. Domestic aviation was responsible for 0.38 per cent. of UK emissions in 2003. We have not undertaken any modelling of the impact that trends in these emissions would have on the costs and reduction requirements in other sectors.