Yesterday Guido brought you Minister Media Monitor, our new resource monitoring ministerial broadcast appearances. As Craig Oliver implements a “one minister a day” policy, the battle is on between producers to land a government spokesman for their programme. In February Sky News and the World at One were the most successful at getting ministers on, followed by the Today programme and Question Time. Piers Morgan only granted one minister a spot on Good Morning Britain. The full numbers show just how few ministers Downing Street authorises to go on the airwaves, another key decline in accountability…