The newly published law, which put England on a third national lockdown this morning from one minute past midnight, says the rules can stay in place until March 31st.
Prime Minister Boris Johnson previously said the lockdown could be lifted in mid-February.
The Prime Minister said the lockdown should be lifted after half time so the children can return to school.
However, the new five-page lockdown law, released late Tuesday, a few hours before the lockdown began, says the rules could last until March 31st.
MEPs will vote this afternoon after a debate on the law, reports said The express.
Mr Johnson said the national lockdown would be reviewed in about six weeks, but Tory backbenches fear it could drag on for three months.
On Tuesday, Cabinet minister Michael Gove admitted the measures could last until March, while Chief Medical Officer Chris Whitty warned that lockdown restrictions could return next winter.