Morgan, who was previously editor of the Daily Mirror and News of the World, said in August that he had no knowledge of phone hacking taking place under his leadership.

“I have never hacked a phone, told anyone to hack a phone, nor to my knowledge published any story obtained from the hacking of a phone,” Morgan said.

The newspaper editor turned CNN chat show host was forced to defend himself over phone hacking claims after Heather Mills claimed that a Mirror Group journalist told to her in 2001 that he had hacked into her voicemail.

Although the journalist in question was not Piers Morgan, the message Mills was referring to appeared to be one that Morgan referred to in a 2006 Daily Mail article.

Yesterday the Leveson Inquiry heard from Stuart Hoare, the brother of Sean Hoare who died earlier this year. Hoare said his brother had seen phone hacking take place on a daily basis during his time at News of the World.

Before his death, the journalist told the BBC that the then News of the World editor Andy Coulson had asked him to hack phones – something Coulson denies.

Other witnesses to appear before the panel today include former TV editor of the News of the World, Sharon Marshall, who is now resident soap expert on ITV1’s This Morning.