I will certainly consider that suggestion, and if I may, I will write to my hon. Friend about it.
The hon. Member for Brighton, Pavilion also asked me about the differences in well designs between operations here and in the United States and about the possibility that we might have methane leaks on the scale that we have seen in Pennsylvania. I visited the United States to talk to experts, and I am aware that the standard of environmental regulation has varied widely across the different states of America. They do not have the overall, national regulatory system that we have. Practices appear to have been tolerated in some states that would not be acceptable in others.
I understand that the repertoire of well design technology is essentially the same as in the United States, but the regulatory framework in the United Kingdom is quite different. Here, we have a national regulator—the Health and Safety Executive—which will require a full review of well design and construction by an independent competent person. I should point out to the hon. Lady that the Royal Academy of Engineering commented that that was a highly valuable feature of the United Kingdom’s system. We can certainly learn from the experience in the United States, but I want to emphasise to her that we start from a position of having what the United States did not have—a system of national regulation.