In August 2000, the Scottish Executive, the former Department of the Environment, Transport and the Regions and the then Shadow Strategic Rail Authority jointly commissioned Booze, Allen and Hamilton to carry out an indicative financial and economic feasibility study to look at potential rail options for rail links to Glasgow and Edinburgh airports. Booze, Allen and Hamilton produced their final report in March 2001.As I indicated in my answers to questions S1W-17421 and S1W-17422, the Scottish Executive is in the process of commissioning a more detailed study which will build on the initial scoping work carried out by Booze, Allen and Hamilton.