In terms of the discussion we had, which said that one of the main problems with having exclusions as opposed to mandatory exemptions is that there's then no oversight at all by the Information Commissioner, if the government says that something is a cabinet confidence or that it falls in any category that is subject to an exclusion, there's no way to check that those matters are appropriately excluded or that the government has made the right call on whether or not this is something that ought to be excluded.
On October 18th, 2017. See this statement in context.