UK prime minister's ex-aide freed on bail after being arrested in connection with phone hacking at paper he used to edit.
Prime minister David Cameron has been under intense pressure in recent days.
Just hours after he held a news conference, his former spokesman, Andy Coulson, was arrested and freed on bail hours later .
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.
As Laurence Lee reports, the twists and turns in this story keep coming.
