I believe that Andrew is going to want to jump in here, but I think I would start off by saying that legislation makes it clear that the deputy head is the accounting officer of an organization. While you might delegate those powers to others in the organization for day-to-day to happen—because, for example, I couldn't review every single contract that my office issues—you still have to make sure that people are properly trained and they understand the rules and there are good compliance and overview.
I don't know, Andrew, if you want to add something.