The hon. Gentleman sums it up perfectly, and I cannot add anything more to that.
The governance of the project is another major area of concern. There will be a sponsor body and a delivery authority. We had a very helpful seminar, which we might be able to set up for Members. It looked at the two successful projects of Crossrail and the 2012 Olympics and how the sponsor body and the delivery authority were set up and operated; we on the House of Commons Governance Committee, which I sat on, heard from Sir David Higgins on how he operated with those two bodies. He said he spent time building up the relationship and the two bodies acted in concert. As Members will know, Baroness Jowell was, when a Member of this House, successful in ensuring the delivery of a very successful Olympics. I know the situation now is slightly different as we do not have an end-date as we did with the Olympics, but Sir David Higgins made it very clear that so long as the professionals, who will be on the delivery authority, have a Gantt chart—I did not know what it meant then, but I do now—so there is a timeframe and the costs are allocated, there should not be any need for any overrun.