HUDDERSFIELD MP Barry Sheerman raised concerns in the Commons that Culture Secretary Jeremy Hunt’s decision would allow the "Murdoch empire" to "expand its monopoly".
Mr Hunt announced this morning that he is set to approve the proposed takeover after News Corp revealed its intention to hive off Sky News into an independent company.
He was set to give a statement on his decision in the Commons at around 3pm - the timing of which Labour criticised as fewer MPs will be in Westminster later in the day to ask questions.
During exchanges on upcoming parliamentary business, Labour man Mr Sheerman called for a debate on the relationship between democracy and the media.
He asked Commons leader Sir George Young: "Are you not worried that the Murdoch empire and its ambition to run down the BBC and expand its monopoly is on course and doing very well? Is that good for democracy?"
Sir George replied: "You might have an opportunity later on today to ask questions about the Secretary of State’s decision. But I reject your accusation that democracy is in any way undermined by the decision that was taken today."
Mr Hunt’s statement will come after an Opposition Day debate led by the Democratic Unionist Party (DUP) on support for UK armed forces and veterans.
In a point of order, Labour former minister Kevin Brennan complained that the statement should come before the debate so it could be heard in "prime time".
Commons Speaker John Bercow admitted the situation was not ideal but a "pragmatic approach" had been taken.
"I hope you and the House will understand that there is a balance of consideration in these matters," he said.
"It was felt to be important, including by me, in the situation that we faced and encountered this morning, to protect the time for a half-day Opposition Day debate in the name of the DUP.
"It is also important that the House, at the earliest practicable opportunity without doing violence to that minority party entitlement, should hear the statement from the Secretary of State and have the opportunity to question him on it.
"I don’t say the situation is ideal. What I do say is a pragmatic approach has been taken."
News Corp, which owns the News of the World, the Sun, the Sunday Times and the Times, is seeking to take over the 61% of BSkyB that it does not own.