In building on what Mr. Seymour said about the vast building portfolio the government owns in various departments, I think you need to start to look at and understand the energy and water use, and also toilet waste generation, of these facilities. Then you need to benchmark them on an ongoing basis to understand what's happening and then strategically target your investments where you can achieve the biggest reductions.
The evidence would suggest that operational savings of up to 20%, maybe a little more, are possible from recommissioning. These types of approaches can be readily achieved, meaning the buildings would be operational without any retrofit—it's just about operating the buildings better, maybe replacing some old technology. The precursor is really good benchmarking and understanding your building portfolio well, and then I think being more ambitious in setting targets for all the indicators of water, energy, materials for your new builds, and for your larger existing buildings as well. I think there are opportunities for improvement to achieve higher performance and move toward more of that kind of low carbon, low water use, low or zero waste generation. The terminology seems to be taking hold in the industry now.