David Cameron left No 10 to appear the Royal Courts of Justice in London today in a long awaited appearance at the Leveson Inquiry into media ethics.
The questions today are likely to focus on five main areas. Did he ask Mr Coulson about phone-hacking before hiring him? If not, why not? Why was Mr Coulson not given full security vetting? Why did he hand Jeremy Hunt quasi-judicial responsibility for the BSkyB bid after he had written a memo to the Prime Minister supporting it? Did he ever discuss phone-hacking with Rupert Murdoch, James Murdoch, Rebekah Brooks or any other News International executives? And if not, why not? And Did Rupert Murdoch ever pressure him to change government policy?
Mr Cameron is also expected to face probing questions about his friendship with former newspaper boss Rebekah Brooks.
So far this week the politicians being questioned about their relationship with the press have included Sir John Major, Gordon Brown, Ed Miliband, and Theresa May. Running in tandem with the Inquiry is Operation Elveden which saw just this morning; the Metropolitan Police make three arrests relating to misconduct in a public office and money laundering offences.
Written and Presented by Ann Salter