UK prime minister's ex-aide freed on bail after being arrested in connection with phone hacking at paper he used to edit.<br /><br />Prime minister David Cameron has been under intense pressure in recent days. <br /><br />Just hours after he held a news conference, his former spokesman, Andy Coulson, was arrested and freed on bail hours later . <br /><br />Coulson was editor of the News of the World while the paper was paying investigators to hack into mobile phones. The paper has been in print for 168 years - but its last edition will be on Sunday. <br /><br />As Laurence Lee reports, the twists and turns in this story keep coming.
