Theresa May has insisted that weak leadership is having a Cabinet of "yes men" as speculation continued to rage about possible challenges to her position.
Mrs May was speaking ahead of a day in which the foreign secretary is due to deliver his key conference speech.
Sources say the speech is 100% loyal to the prime minister and the Brexit agenda set out in her Florence speech last month, Norman Smith added.
It comes after Mr Johnson's recent interventions over Brexit appeared to be have been delivered without the authority of 10 Downing Street.
"Boris' position on these issues is well known".
Asked again on ITV whether he was too risky to move, May avoided any direct threat to sack him but stressed that "of course a prime minister makes decisions about who is in their cabinet".
Ferrari and Vettel are letting Mercedes off the hook
Further back Williams have recently overhauled Toro Rosso for fifth, but look unlikely to catch Force India ahead. Mercedes' lack of pace prompted Hamilton to complain of "unacceptable" problems behind the scenes at his team.
Shooting At Fertitta Hall At University of Southern California, Los Angeles
Monday near the north end of campus, which is near downtown Los Angeles. "We can confirm there's been no shooting on USC campus". LAPD searched Fertitta Hall at the USC Marshall School of Business, while students stayed in lockdown.
Nissan to recall 1.2 mln cars in Japan
The vehicles, which have been sold since October of 2014, underwent a final vehicle inspections by unauthorized technicians. Nissan says each vehicle is subject to re-inspection, and that they will submit a noncompliance recall report this week.
The prime minister told BBC Breakfast "leadership is about ensuring you have a team. of different voices around the table so you can discuss matters".
A post-Brexit transition period should last "not a second more" than two years after Britain formally leaves the EU, Johnson said. "I want to make sure I have a range of voices sitting around the table".
"I negotiate with them [the EU]".
On Europe, she said she backed an implementation period of about two years after the United Kingdom leaves in March 2019 but suggested that some changes could come into effect earlier if appropriate.
"Of course the Prime Minister is in charge, but the way we do things - as we did with our view on Brexit, as we do on other things - is to come together with a Government view and that Government view is then the view that people see", she told BBC Radio 4's Today programme.
Voters wanted ministers "to focus not on our own jobs, but on their jobs and their futures", she said.
The health secretary made the comments to the Guardian after being asked if he feared the foreign secretary was "looking at the top job".