Downing Street’s failure to disclose to the public that Patrick Rock had resigned and been arrested for three weeks is causing some bother for the Prime Minister’s Official Spokesperson. At yesterday’s Lobby briefing Jean-Christophe Gray, or JC as he is affectionately known by hacks, was asked by lippy Mirror deputy political editor James Lyons: “Has anyone from Downing Street resigned or been arrested in the last 24 hours?” “No…”, a less than impressed JC sighed…