Mr. Chairman, we haven't audited the U.K. experience. We've certainly looked at it, and what we see, at least on the surface, is quite appealing. Here is the chart, for example, that comes out of that exercise, which shows which departments are doing well and which are doing poorly against the various top-down targets that have been set for greening.
It's an approach. I'm not so sure our colleagues within the government are ruling it out, looking ahead. Perhaps they would be best equipped to speak to that, but it's one of the issues I understood them to say they were taking a look at, the approaches that are being taken in other jurisdictions such as the U.S. and the U.K.