Leaving the EU: National Audit Office Martin Vickers (Cleethorpes) (Con) 6. What assessment the National Audit Office has made of the potential effect on its work of the UK leaving the EU. Sir Edward Leigh Brexit is, of course, a major task for Departments. Since 2016, the NAO has published 26 reports on aspects of Brexit. Most recently it has published reports on the UK’s border preparedness for Brexit and on Brexit’s implications for the supply of medicines to the health and social care sectors. Martin Vickers My right hon. Friend and I represent neighbouring and largely Brexit-supporting constituencies, and of course we want to get Brexit done as quickly as possible, but can I ask how the NAO will approach post-Brexit financial audit? Sir Edward Leigh The NAO wants to get the Brexit work done as quickly and efficiently as possible and has been working with all Departments to assess the potential impact on their financial performance of the decision to exit the EU. The exact impact in the current year may depend on the outcome of negotiations.