Boris Johnson's diary with Cameron, Brooks and Murdoch
7 October 2012 Last updated at 13:20 BST
The mayor of London's diary lists more than 7,000 entries, which shows some key engagements were not previously released "for commercial sensitive" reasons.
The Sunday Politics spent more than a year trying to get hold of Boris Johnson's official diary, and succeeded after the intervention of the information commissioner.
Andrew Cryan reports.