Former Editor of the News of the World Andy Coulson arrives for the sentencing at the Old Bailey court house in London July 4, 2014. British Prime Minister David Cameron's former media chief Coulson was jailed for 18 months on Friday for being complicit in industrial scale phone-hacking by journalists at the Rupert Murdoch tabloid he edited. REUTERS/Neil Hall (BRITAIN - Tags: MEDIA CRIME LAW) 

Former Editor of the News of the World Andy Coulson arrives for the sentencing at the Old Bailey court house in London July 4, 2014. British Prime Minister David Cameron's former media chief Coulson was jailed for 18 months on Friday for being complicit in industrial scale phone-hacking by journalists at the Rupert Murdoch tabloid he edited. REUTERS/Neil Hall (BRITAIN - Tags: MEDIA CRIME LAW) 

Former News of the World reporter James Weatherup leaves after the sentencing at the Old Bailey court house in London July 4, 2014. British Prime Minister David Cameron's former media chief Andy Coulson was jailed for 18 months on Friday for being complicit in industrial scale phone-hacking by journalists at the Rupert Murdoch tabloid he edited. Three other senior journalists from News of the World newspaper Greg Miskiw, Neville Thurlbeck and Weatherup, were also sentenced on Friday. Miskiw and Thurlbeck were sentenced to six months in jail while Weatherup was given a 4 month suspended sentence. REUTERS/Neil Hall (BRITAIN - Tags: MEDIA CRIME LAW) 

Private investigator Glenn Mulcaire leaves after the sentencing at the Old Bailey court house in London July 4, 2014. British Prime Minister David Cameron's former media chief Andy Coulson was jailed for 18 months on Friday for being complicit in industrial scale phone-hacking by journalists at the Rupert Murdoch tabloid he edited. Mulcaire, the former private investigator who conducted much of the hacking, was given a six month suspended sentence. REUTERS/Neil Hall (BRITAIN - Tags: MEDIA CRIME LAW) 

Former Editor of the News of the World Andy Coulson arrives at the Old Bailey courthouse in central London June 30, 2014. British Prime Minister David Cameron's ex-media chief Coulson will face a re-trial over whether he sanctioned illegal payments to a public official while editing a Rupert Murdoch tabloid, prosecutors said on Monday. REUTERS/Luke MacGregor (BRITAIN - Tags: MEDIA POLITICS CRIME LAW BUSINESS) 

Former editor of the News of the World Andy Coulson arrives at the Old Bailey courthouse in London June 30, 2014. British Prime Minister David Cameron's ex-media chief Coulson will face a re-trial over whether he sanctioned illegal payments to a public official while editing a Rupert Murdoch tabloid, prosecutors said on Monday. REUTERS/Neil Hall (BRITAIN - Tags: CRIME LAW POLITICS MEDIA) 

Former Editor of the News of the World Andy Coulson (C) and his lawyer Timothy Langdale (L) leave the Old Bailey in central London, June 25, 2014. The jury in Britain's phone-hacking trial was discharged on Wednesday after failing to reach agreement on whether Andy Coulson, the former media adviser to Prime Minister David Cameron, was guilty of authorising illegal payments. Coulson, who had edited Rupert Murdoch's now-defunct News of the World tabloid, was on Tuesday found guilty of conspiring to hack into phones. REUTERS/Paul Hackett ( BRITAIN - Tags: POLITICS CRIME LAW) 

Former editor of the News of the World Andy Coulson travels in a taxi cab after leaving the Old Bailey courthouse in London June 25, 2014. The jury in Britain's phone-hacking trial was discharged on Wednesday after failing to reach agreement on whether Andy Coulson, the former media adviser to Prime Minister David Cameron, was guilty of authorising illegal payments. Coulson, who had edited Rupert Murdoch's now-defunct News of the World tabloid, was on Tuesday found guilty of conspiring to hack into phones. REUTERS/Neil Hall (BRITAIN - Tags: POLITICS CRIME LAW) 

Former editor of the News of the World Andy Coulson leaves the Old Bailey courthouse in London June 25, 2014. The jury in Britain's phone-hacking trial was discharged on Wednesday after failing to reach agreement on whether Andy Coulson, the former media adviser to Prime Minister David Cameron, was guilty of authorising illegal payments. Coulson, who had edited Rupert Murdoch's now-defunct News of the World tabloid, was on Tuesday found guilty of conspiring to hack into phones. REUTERS/Neil Hall (BRITAIN - Tags: POLITICS CRIME LAW TPX IMAGES OF THE DAY) 

Former editor of the News of the World Andy Coulson arrives at the Old Bailey courthouse in London June 25, 2014. REUTERS/Neil Hall (BRITAIN - Tags: CRIME LAW POLITICS) 

Former editor of the News of the World Andy Coulson leaves the Old Bailey courthouse in London June 24, 2014. A jury at London's Old Bailey court cleared Rebekah Brooks unanimously but found Andy Coulson guilty of conspiring to intercept messages to break news about royalty, celebrities and victims of crime. REUTERS/Neil Hall (BRITAIN - Tags: MEDIA CRIME LAW) 

Former editor of the News of the World Andy Coulson leaves the Old Bailey courthouse in London June 24, 2014. A jury at London's Old Bailey court cleared Rebekah Brooks unanimously but found Andy Coulson - her former lover and Prime Minister David Cameron's ex-media chief - guilty of conspiring to intercept messages to break news about royalty, celebrities and victims of crime. REUTERS/Neil Hall (BRITAIN - Tags: MEDIA CRIME LAW) 

Former Editor of the News of the World Andy Coulson arrives at the Old Bailey in central London June 24, 2014. Coulson was found guilty of conspiracy to intercept communications on Tuesday. REUTERS/Paul Hackett (BRITAIN - Tags: CRIME LAW MEDIA HEADSHOT TPX IMAGES OF THE DAY) 

Former Editor of the News of the World Andy Coulson arrives at the Old Bailey in central London June 24, 2014. Coulson was found guilty of conspiracy to intercept communications on Tuesday. REUTERS/Paul Hackett (BRITAIN - Tags: CRIME LAW MEDIA TPX IMAGES OF THE DAY) 

Andy Coulson, former editor of the News of the World and Former spokesman for Britian's Prime Minister David Cameron, leaves after giving evidence before the Leveson Inquiry into the ethics and practices of the media at the High Court in central London May 10, 2012. REUTERS/Andrew Winning (BRITAIN - Tags: MEDIA CRIME LAW POLITICS) 

Andy Coulson (R), the former spokesman for Britain's Prime Minister David Cameron makes a statement to the press outside his home in Dulwich, south east London July 24, 2012. Coulson and Rupert Murdoch's former UK newspaper boss, Rebekah Brooks, are to be charged with phone-hacking offences in the most significant development in a scandal that has rocked Britain's establishment. REUTERS/Paul Hackett (BRITAIN - Tags: POLITICS MEDIA BUSINESS) 

Andy Coulson, the former spokesman for Britain's Prime Minister David Cameron leaves his home in Dulwich, south east London July 24, 2012. Coulson and Rupert Murdoch's former UK newspaper boss, Rebekah Brooks, are to be charged with phone-hacking offences in the most significant development in a scandal that has rocked Britain's establishment. REUTERS/Paul Hackett (BRITAIN - Tags: POLITICS) 

Andy Coulson, the former spokesman for Britain's Prime Minister David Cameron makes a statement to the press outside his home in Dulwich, south east London July 24, 2012. Coulson and Rupert Murdoch's former UK newspaper boss, Rebekah Brooks, are to be charged with phone-hacking offences in the most significant development in a scandal that has rocked Britain's establishment. REUTERS/Paul Hackett (BRITAIN - Tags: POLITICS) 

Andy Coulson, former editor of the News of the World and Former spokesman for Britian's Prime Minister David Cameron, leaves after giving evidence before the Leveson Inquiry into the ethics and practices of the media at the High Court in central London May 10, 2012. REUTERS/Andrew Winning (BRITAIN - Tags: MEDIA CRIME LAW POLITICS) 

British Prime Minister David Cameron's former spokesman Andy Coulson arrives in a van to Govan police station in Glasgow, Scotland May 30, 2012. Coulson was detained on Wednesday by police on suspicion of perjury after he denied in court any knowledge of phone hacking by reporters at Rupert Murdoch's News of the World. The detention of Andy Coulson, a former editor of the tabloid, damages Cameron because it calls into question his judgement in seeking to win Murdoch's backing by employing one of his most powerful journalists.REUTERS/David Moir (BRITAIN - Tags: POLITICS CRIME LAW) 

Andy Coulson, former editor of the News of the World and Former spokesman for Britian's Prime Minister David Cameron, leaves after giving evidence before the Leveson Inquiry into the ethics and practices of the media at the High Court in central London May 10, 2012. REUTERS/Olivia Harris (BRITAIN - Tags: MEDIA CRIME LAW POLITICS) 

Andy Coulson, the former spokesman for Britain's Prime Minister David Cameron, leaves a police station after being bailed, in South London, July 8, 2011. Police arrested David Cameron's former spokesman on Friday over the scandal that has shut down Rupert Murdoch's News of the World, forcing the prime minister to defend his judgment while promising new controls on the British press. REUTERS/Olivia Harris (BRITAIN - Tags: POLITICS CRIME LAW BUSINESS MEDIA) 

Former News of the World newspaper editor Andy Coulson, who resigned as British Prime Minister David Cameron's communications chief last week, leaves his home in London January 27, 2011. British police opened a new investigation on Wednesday into allegations of phone hacking after the country's top-selling tabloid newspaper sacked one of its senior editors. REUTERS/Stefan Wermuth (BRITAIN - Tags: POLITICS CRIME LAW) 

Conservative Party media advisor, Andy Coulson, arrives at Downing Street in London May 12, 2010. REUTERS/Suzanne Plunkett (BRITAIN - Tags: POLITICS ELECTIONS) 

Britain's opposition Conservative Party's communications chief Andy Coulson leaves Portcullis House in London July 21, 2009. Coulson, the media adviser to the leader of Britain's opposition Conservatives said on Tuesday he believed a "rogue reporter" was to blame for phone hacking when he edited a Rupert Murdoch tabloid.
REUTERS/Stefan Wermuth (BRITAIN POLITICS MEDIA) 

Andy Coulson, former News of the World newspaper editor and Prime Minister David Cameron's director of communications, leaves the High Court in Glasgow, Scotland December 9, 2010. Coulson gave evidence in the trial involving former Scottish politician Tommy Sheridan and his wife Gail, both of whom deny committing perjury during a successful defamation action against the News of the World in 2006, local media reported. REUTERS/David Moir (BRITAIN - Tags: CRIME LAW POLITICS) 

Andy Coulson, former News of the World newspaper editor and Britain's Prime Minister David Cameron's director of communications, leaves number 10 Downing Street in London January 21, 2011. Coulson, Cameron's media chief, quit on Friday over allegations of phone hacking at the newspaper he used to edit, a move that could embarrass the prime minister and complicate News Corp's bid to buy BSkyB. REUTERS/Suzanne Plunkett (BRITAIN - Tags: POLITICS MEDIA CRIME LAW) 

Former News of the World newspaper editor and Prime Minister David Cameron's director of communications, Andy Coulson, is seen leaving his home in Dulwich, southeast London in this September 8, 2010 file photograph. Coulson resigned as Cameron's director of Communications, Downing Street said, on January 21, 2011. REUTERS/Luke MacGregor/Files (BRITAIN - Tags: POLITICS SOCIETY) 

Andy Coulson, former News of the World newspaper editor and Prime Minister David Cameron's director of communications, leaves the High Court in Glasgow, Scotland December 9, 2010. Coulson gave evidence in the trial involving former Scottish politician Tommy Sheridan and his wife Gail, both of whom deny committing perjury during a successful defamation action against the News of the World in 2006, local media reported. REUTERS/David Moir (BRITAIN - Tags: CRIME LAW POLITICS) 

Police officers leave the home of Andy Coulson, the former communications director of Britain's Prime Minister David Cameron, in south London July 8, 2011. Police arrested Cameron's former spokesman on Friday over the scandal that has shut down Rupert Murdoch's News of the World, forcing the prime minister to defend his judgment while promising sweeping new rules for the British press. REUTERS/Paul Hackett (BRITAIN - Tags: POLITICS CRIME LAW) 

Police officers arrive at the home of Andy Coulson, the former communications director of Britain's Prime Minister David Cameron, in south London July 8, 2011. Police arrested Cameron's former spokesman on Friday over the scandal that has shut down Rupert Murdoch's News of the World, forcing the prime minister to defend his judgment while promising sweeping new rules for the British press. REUTERS/Paul Hackett (BRITAIN - Tags: MEDIA CRIME LAW POLITICS) 

Police officers leave the home of Andy Coulson, the former communications director of Britain's Prime Minister David Cameron, in south London July 8, 2011. Police arrested Cameron's former spokesman on Friday over the scandal that has shut down Rupert Murdoch's News of the World, forcing the prime minister to defend his judgment while promising sweeping new rules for the British press. REUTERS/Paul Hackett (BRITAIN - Tags: POLITICS CRIME LAW) 

Britain's Prime Minister David Cameron speaks during a news conference at number 10 Downing Street in London July 8, 2011. Cameron said on Friday he believed that his former communications chief Andy Coulson was being investigated over allegations of phone hacking during his time as editor of the News of the World. REUTERS/Peter Macdiarmid/pool (BRITAIN - Tags: POLITICS CRIME LAW MEDIA) 

Britain's Prime Minister David Cameron speaks during a news conference at number 10 Downing Street in London July 8, 2011. Cameron said on Friday he believed that his former communications chief Andy Coulson was being investigated over allegations of phone hacking during his time as editor of the News of the World. REUTERS/Peter Macdiarmid/pool (BRITAIN - Tags: POLITICS CRIME LAW MEDIA) 

Former News of the World newspaper editor and Prime Minister David Cameron's director of communications, Andy Coulson, leaves number 10 Downing Street in London January 21, 2011. The British prime minister's media chief quit on Friday over allegations of phone hacking at the newspaper he used to edit, a move that could embarrass the prime minister and complicate News Corp's bid to buy BSkyB. REUTERS/Suzanne Plunkett (BRITAIN - Tags: POLITICS MEDIA CRIME LAW) 

Andy Coulson, former News of the World newspaper editor and Prime Minister David Cameron's director of communications, leaves the High Court in Glasgow, Scotland December 9, 2010. Coulson gave evidence in the trial involving former Scottish politician Tommy Sheridan and his wife Gail, both of whom deny committing perjury during a successful defamation action against the News of the World in 2006, local media reported. REUTERS/David Moir (BRITAIN - Tags: CRIME LAW POLITICS) 

Britain's opposition Conservative Party's communications chief Andy Coulson leaves Portcullis House in London July 21, 2009. Coulson, the media adviser to the leader of Britain's opposition Conservatives said on Tuesday he believed a "rogue reporter" was to blame for phone hacking when he edited a Rupert Murdoch tabloid.
REUTERS/Stefan Wermuth (BRITAIN POLITICS MEDIA)