MP Peter Luff has declared the pubcos now have a "noose tightened around their neck", after he was told by the government it would consider new legislation against the industry.
Luff revealed to The Publican he had received a letter from competition minister Kevin Brennan in response to his committee's report on the pubcos.
In the letter, he said, competition minister Brennan indicated the chance of a referral to the Competition Commission over the tie "remains on the table" if the pubcos did not adhere to the Business, Innovations and Skills Committee (BISC) recommendations.
But Brennan also said if the measures were not followed they would look to implement them on a "statutory basis".
Luff said: "This really is the last chance for pubcos, make no mistake."
His committee will also meet again next week to decide upon the details of another short report on the pubcos, in light of the government's response.
The Tory MP added he was "very, very pleased" this morning having heard John Healey's measures to help pubs, which reflects a large chunk of the BISC report.
"This has gone way beyond what I expected," he said.
On the plan to offer tenants free-of-tie and a guest beer option, he said this "always seemed to me to be the obvious solution".
He added: "If the tie brings all the benefits they (pubcos) claim, then the majority of their publicans will to choose to stick with it as long as the system of rent setting is transparent."
Asked whether he thought the Tories would take up the proposals, he said: "This is one of those issues where all parties seem to be singing from the same hymn sheet. I cannot see how any future government cannot endorse these measures. The politics of pubs is such a big issue for MPs.
"We will not let this go."
On restrictive covenants, Luff said he was "really pleased". "If we all agree they are bad, then let's get rid of them," he said.
Meanwhile, Labour MP and chairman of the All-Party Parliamentary Beer Group, John Grogan also revealed his surprise at the scope of Healey's plans.
"John Healey's proposals massively exceed expectations given that he has been in the job as 'Minister for Pubs' for just over a month.
"I very much hope that the Conservative and Liberal frontbenches will now back the broad thrust of his plans and in particular the spending commitments so that organisations like 'Pub is the Hub' can look to the future with absolute confidence."