Essentially, in the U.K. we divide budgets into two halves, broadly. We have what we call departmental expenditure limits, which are set at the time of a spending review. These are multi-year budgets that cover the department's programs, over which we would expect them to have some control and some leverage. We also have annually managed expenditure, which is by nature much more volatile and potentially demand-driven. It might include things like pensions or social-security-type payments.
Essentially, for those large programs you're talking about, the way we allocate resources in the U.K. is through the spending review process, which factors in those intended plans and the possible programs the government wants to take. In the process of trading off the different options that people have, the government will take a decision on the levels that they're willing to accept for those departmental expenditure limits. Then it's broadly up to departments to live within those limits over the period.
In terms of monitoring specific programs, I suppose we have assurance processes around those. We have something called the Major Projects Authority, which looks at very large-scale programs and provides some challenge—