British health minister Sajid Javid said on Monday it was possible that Prime Minister Boris Johnson would face a vote of confidence triggered by disgruntled lawmakers from within his Conservative Party.
"I do think it's possible, but I don't know," Javid told Sky News television.
He said the country did not need a challenge to the prime minister.
ITV's UK editor said lawmakers expected an announcement on Monday of a confidence vote.
(Reporting by Kate Holton; Writing by William Schomberg)