Home Secretary Priti Patel has told Conservative MPs pushing for Boris Johnson to resign to "forget it".
Patel said writing letters of no-confidence in the Prime Minister was a "sideshow" and the party should be focused on "real challenges that we have to find solutions to".
Speaking to the Daily Mail, she said: "This isn't about a parade (of leadership candidates) or a contest of letters. We need to concentrate on doing our jobs.