Question to the Department for Business and Trade:
To ask His Majesty's Government whether they have, at any point since 1999, asked the National Audit Office to review the operation of the Horizon IT system used by the Post Office.
We are not aware of any evidence that the National Audit Office (NAO) has been asked to review the operation of the Horizon system; the Horizon contract was always managed directly by Post Office, which does not come under NAO’s remit.
However the Post Office Horizon IT Inquiry will look at the actions successive Governments have taken regarding oversight of the Horizon IT system.