Yes, they can and in theory, the auditor should have an ongoing role throughout the year, although I have not worked with a council where this happens. NALC guidance notes sometimes refer to regular meetings, seemingly oblivious to the fact that this doesn't actually happen. Ultimately, it's a question of cost. Having your internal auditor at your side all year doesn't come cheap and may only be justifiable if there are complex issues that require an independent viewpoint.