My right hon. Friend is right. I would be very happy to write to him. I can summarise it now by saying that the primary tier is that connected to political activity. Anybody from any foreign country who wishes to influence this House, this Parliament, any Members here, or indeed any political outcome, would be looking at the primary tier. That is the basic level, and it involves a registration on a website so that we can all know who has taken payment for what—which piper has been paid and by whom.
The enhanced registration is different and requires registration for a wider range of activities, but those depend on the specific foreign power and, indeed, the entity or operation within it. That is a different matter, and that will be down to the Secretary of State looking at what is reasonably necessary in order to protect the safety and interests of the United Kingdom—that is the enhanced tier, as we are calling it. That is the summary, but I will be happy to write to the ISC.