Mr. Hugh Creegan:

I am conscious that we did not respond to Deputy Rock's query about the cost and timing implications of the change to the single bore. We have not yet fully bottomed out these things. That is why I referred at the beginning to something that is likely rather than certain. At the moment, all the indications are that the cost of a single-bore tunnel will be broadly of the same order as a twin-bore tunnel. Maybe it will be a fraction cheaper. The costs will be broadly similar. Opting for a single-bore tunnel will not make any difference to the timing of the project programme. In both sets of circumstances, the project will be started and completed at roughly the same time.