John Whittingdale, the chairman of the Commons Culture Committee, has told the BBC that he has "no plans to call Piers Morgan or any Mirror Group executives", following allegations from Heather Mills that the newspaper hacked her mobile phone.

Earlier today, Labour deputy leader Harriet Harman has added her voice to the growing controversy surrounding Mr. Morgan, telling Sky News he has “questions to answer” over claims that a journalist from the Mirror hacked the mobile phone of Heather Mills.

She said: "Heather Mills directly said that someone called her up and said they had heard a tape of a phone message Paul McCartney has left for her. Subsequently in a Daily Mail article, Morgan said he heard a heartbreaking phone message, which clearly gives rise to the assumption he'd heard a tape recorded message.

"It’s not good enough for him to say ‘I’ve always complied with the law and the PCC code of conduct.' He’s got to answer - it’s no good people chanting a mantra ‘I’ve always obeyed the law’."

Yesterday, one of the MPs on the parliamentary committee looking into phone hacking called for Piers Morgan to come back to Britain to help police investigating the scandal.

Hours after new allegations from Sir Paul McCartney’s former wife Heather Mills that a senior journalist from a Mirror group newspaper had admitted to her they had hacked into her phone messages, Therese Coffey said:

“I don’t see any point in him [Morgan] necessarily just staying in the USA issuing statements. I think it would help everybody, including himself and this investigation, if he was able to say more about why he wrote what he did in 2006.”

She told the BBC’s Newsnight programme on Wednesday evening: “If Mr Morgan wants to come back to the UK and help them [police] with their inquiries – I don’t mean being arrested in any way – but I’m sure that he can add more light onto that very article that he wrote in 2006.”

Coffey was referring to an article Morgan wrote five years ago where he appears to describe listening to a voice message left for Heather Mills by Sir Paul McCartney.