That problem goes back to the beginning of the debate about whether we could decant Chamber by Chamber, or whether it would all have to be done as one big decant because of the pooled facilities. Again, survey work is not completed yet. We have agreed the R&R estimate that should bring the survey work to completion, and I eagerly await the conclusions.
Re-routing has been thought of. The interesting thing about the article I referred to is that it had photographs of what the original conduits look like now. They have been colonised by electricity cables, which are not labelled. They have been colonised by gas and water pipes that run through the original utility that was supposed to draw in air, so that it would become hot air heated by the fires underneath, which, given the fate of the previous building, was quite a brave thing to install in Victorian times. Is it appropriate now? Probably not. A bolder solution might be to just concrete over the whole thing and put new services in. A great danger of being on a Members’ scrutiny Committee is that we start finding Members’ solutions to problems, and that is probably worse than calling in the experts.
We have made mistakes; we should admit it. I do not think they are quite as expensive as my hon. Friend the Member for The Cotswolds thinks, but there are things that have not been done as well or as elegantly as they could have been. I do not think we will get another chance to make a major change because we are about to embark, in perhaps two years’ time, on really big expenditure, depending on the directions we choose. For certainty, that will require another decision of the House, perhaps in the next Parliament, but soon-ish in our terms, and then there is no going back. If the costs are to escalate dramatically, we need to get there first. If the time that we are decanted from this place is to be longer that we had hoped, given the starting point for this discussion—it could be a lot longer than we hope—we had better get the decision on that right and reconcile ourselves to it. I do not think there is a more rational way forward.