The Labour Party has called for Hunt to resign following the release of key emails at the Leveson inquiry suggesting that Hunt had given a "back channel" for News Corp during the £7.5 billion Sky bid over 2010 and 2011.
Hunt says that he handled the bid process with "scrupulous fairness", and rejected calls for him to stand down.
But the situation is expected to be compounded as Rupert Murdoch, the chairman and chief executive of News Corporation, has just left his London flat and is on the way to give evidence at the Leveson inquiry into press ethics and standards over today and tomorrow.
It was during the evidence of his son, James Murdoch, yesterday at the Leveson that the revelations about Hunt came out as part of emails sent by News Corp lobbyist Fred Michel.
One email from Michel quoted Hunt as saying "we'd get there in the end" referring to the bid, and that he "shared" News Corp's objective of taking over the pay-TV broadcaster.
Another email, sent on the day before Hunt was due to make a statement to Parliament on the bid, was met with gasps at the inquiry yesterday, as it said: "Managed to get some infos on the plans for tomorrow (although absolutely illegal...!)"
Giving evidence to the Leveson, James Murdoch - the former chairman of Sky - said that the reference had been a "joke".
The youngest son of Rupert Murdoch did disclose that he discussed the Sky bid with prime minister David Cameron at a Christmas dinner in 2010 at the home of former News International chief executive Rebekah Brooks, just days after Hunt had been handed the power to arbitrate over the takeover.
The job had been stripped from Vince Cable by Cameron after the business secretary was secretly recorded saying he had "declared war" on the Murdochs.
Fred Michel's emails also revealed Hunt's office regularly updated News Corp on the progress of efforts to appease widespread media plurality concerns about the multi-billion pound takeover to gain regulatory approval.
The two sides were found to have spoken several times a day at points, once delaying the culture secretary's trip to the ballet.
Scottish First Minister Alex Salmond was also shown to have been enthusiastic in his support for the bid. Salmond's party has since gained the backing of Murdoch's newspapers, including the Scottish Sun.
Hunt and David Cameron are expected to face more awkward revelations today during Rupert Murdoch's potentially explosive evidence at the Leveson.
> James Murdoch 'stands by' by hacking evidence at Leveson Inquiry