David Cameron said the relationship between politicians and the media had been too close for decades but reiterated there was "no grand bargain" with his Government and the Murdochs, during an emergency question on the Culture Secretary.
David Cameron said there is "nothing as tough or rigorous" as the Leveson Inquiry in handling the controversy over Jeremy Hunt's handling of the BSkyB takeover bid.
The Prime Minister added that the Culture Secretary's special advisor was "right to resign".
David Cameron said Jeremy Hunt "asked for independent advice and acted on it" on the BSkyB takeover bid after Labour were granted an urgent question about the Culture Secretary in the House of Commons.
Labour believes it is the first time a Prime Minister has been summoned to the House since urgent questions were introduced a decade ago.
A senior party source said: "He should have not have been dragged. He should be doing the right thing."
The Prime Minister is expected to appear in the House of Commons this afternoon to answer a question as to why he is not holding a separate ministerial inquiry into the conduct of the Culture Secretary Jeremy Hunt.
Labour's Ed Miliband claims that there have been at least three breaches of the Ministerial Code and insists the issue can't be dealt with by the Leveson inquiry.
David Cameron has cancelled a scheduled visit to Milton Keynes following the granting of the urgent question, aides said.
Labour has been granted an urgent question in the Commons today on why the Prime Minister has not referred Culture Secretary Jeremy Hunt to his independent adviser on ministerial interests.
The Prime Minister's spokesman insisted again today that the conduct of the Culture Secretary Jeremy Hunt over the BSkyB bid does not merit a separate Government inquiry, in addition to the Leveson inquiry. He said: "We do not think it makes sense to have a parallel process."
But the Minister is still under growing pressure to come clean about any contacts he had with the Murdoch empire during the process. Last week, his special adviser Adam Smith resigned after admitting he had got too close to News Corporation officials.
Labour leader Ed Miliband said the issue over Mr Hunt reflected on the "character of the Government" and there was "clear evidence" that he had breached the ministerial code in "at least three ways".
People need to know there is the utmost probity and integrity in the way Government is being run.
It is a pattern with this Prime Minister, particularly around News International... He resists the calls for change.
Everybody can see that the obvious thing for him to do is make this referral to Sir Alex Allan.