I will make a little progress before I give way again.
Turning to the contents of the Bill, I think it is helpful to consider them in three themes. The first is about liberating private investment in clean technologies, helping reduce our exposure to the very volatile gas prices in the long term. For example, the Bill will help us to exploit our absolutely extraordinary potential for carbon capture, usage and storage, as well as low-carbon hydrogen, potentially for industrial use. This country has a vast storage reservoir beneath the North sea, much of it once filled with oil and gas. There could be enough capacity to store up to 78 billion tonnes of carbon. I appreciate that people have difficulty imagining what that would look like—I know I did. The answer is that it is the equivalent weight of 15 billion elephants, if people are better able to imagine that, or to put it another way, an atmospheric pressure roughly the space of 200 million St Paul’s cathedrals. In short, our geology provides us with a lot of space under the North sea, and if we are able to fill the UK’s theoretical potential carbon dioxide storage capacity with CO2, the avoided costs at today’s emission trading prices could be in the region of £5 trillion. We have the potential for a geological gold mine under the sea, and the Bill helps us to access it.