It is a longstanding convention that former Ministers are allowed reasonable access to the papers that were issued to them when in office. However, such access is at the Government's discretion and is conditional on potential authors undertaking to comply with the Radcliffe principles. The detail of the Radcliffe principles can be found in the Directory of Civil Service (volume 2), which is available on Gov.uk. I believe that the continued application of these provisions will provide the suitable reassurance that the Hon. Member is seeking.