Boris Johnson faces mounting demands from rebel Tory MPs to give the Commons a vote on tougher coronavirus curbs.
More than 40 Conservative MPs are backing an attempt to increase parliamentary scrutiny over further restrictions in England.
Leading the revolt, senior Tory Sir Graham Brady, who chairs the Conservative Backbench 1922 Committee, has tabled an amendment that would see the House of Commons to debate and vote on any future such measures.
The Coronavirus Act - which was passed in March - gave ministers emergency powers to respond to the pandemic but they were time-limited and need to be renewed by the House of Commons next week.
Tory backbencher Sir Geoffrey Clifton-Brown said: “The Government doesn't allow Parliament to have scrutiny over these quite severe coronavirus measures.
"It is just simply putting them through by statutory instruments. We want a debate and a vote on the floor of the House."
He added: "It's disgraceful really that really very far-reaching powers, curtailing people's civil liberties, have just been pushed through without a proper debate in Parliament."
Former minister Tobias Ellwood backed the move, tweeting: "6 months ago we hoped/expected to be out of the woods by now.
"Instead we brace ourselves for another 6 months. But this time let's allow Parliamentary oversight to return.
"I hope Government agrees and offers to amend the Coronavirus Act in this spirit."
