Retired public servant David Henry found that the final report by Rebecca Kitteridge on the GCSB was finished on March 22 and leaked on April 7. Copies went to 34 people, including United Future leader Peter Dunne and Act leader John Banks. Both were briefed on the report, but not shown the "secret" appendices. Mr Banks returned his copy after the briefing, but Mr Dunne kept his.
Mr Henry checked copiers, emails, phone calls and physical movements around Parliament.
Building access records showed that on Monday, April 8, reporter Andrea Vance emailed she was waiting to meet Mr Dunne for coffee. Mr Dunne left Parliament at 11.35am and returned at 12.27pm, but he claimed he did not meet Ms Vance because he was waylaid.
Three people with access to the report were also in contact with Ms Vance at the time: a GCSB official, a staffer in the Prime Minister's Office and Mr Dunne. Mr Henry was satisfied the employees' dealings were official work after checking their emails and other information.
Mr Dunne refused to allow Mr Henry to see many of the 86 emails between himself and Ms Vance. The subject headings showed most related to arranging to meet, or the GCSB. Mr Henry said Mr Dunne would not give permission to view the emails.