Over the years, Charles's private views various issues have also been made known to the public. He sent letters between September 2004 and April 2005 to ministers in seven Whitehall departments during the second term of Tony Blair’s Labour Government, where he shared his views on policy. The letters were known as the back spider memos due to the Prince’s unique handwriting. In 2004, a letter to then Education Secretary Charles Clarke showed Charles warning that teachers of English and history were in danger of losing their passion for the subjects because of “fashionable” teaching techniques. Prince Charles will become King when the Queen steps down (Image: EXPRESS)