Submitted in response to written requests from the Inquiry, usually providing lists of questions to be answered. In most cases these formed the basis of questioning in public sessions, but in some cases they were read into the record (or taken as read) and the witness did not appear in person.
Given by witnesses invited by the Inquiry, normally after they have made written statements. These sessions could be viewed live online and sometimes on television news services, and the video recordings are part of the archive. The statements were usually released to the public after the public sessions.
Details of Inquiry expenditure were published on a quarterly basis. They were shown in a cumulative format, so the successive tables below show the full costs from the establishment of the Inquiry, in mid-July 2011, to the end of October 2012. The final cost of the Inquiry was posted in January 2013 once all outstanding invoices had been received and settled.
In accordance with Cabinet Office guidelines, the Inquiry also published the business expenses of, and hospitality received by, its most senior official.