former deputy prime minister he can not see a problem with the future king writing to government ministers and insisted he had ` a lot to offer this country ' .
lord prescott 's intervention comes after the supreme court backed a previous ruling paving the way for the publication of prince charles 's so-called ` black spider ' memos .
the letters were penned between september 2004 and march 2005 and sent by the prince to seven government departments .