Former Prime Minister Tony Blair will be subjected to a day of questioning about his relationship with Rupert Murdoch's News Corp and the rest of the media at the Leveson Inquiry today.

Blair will come under particular scrutiny about the extent to which he made a deal with News Corp in exchange for support from The Sun newspaper in 1997. Blair famously flew to Australia in 1995 to address a News Corp conference.

Blair's period in office was one characterised by spin with many journalists sharply critical of the way press secretary Alastair Campbell operated.